/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:02:27,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:02:27,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:02:27,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:02:27,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:02:27,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:02:27,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:02:27,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:02:27,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:02:27,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:02:27,113 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:02:27,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:02:27,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:02:27,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:02:27,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:02:27,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:02:27,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:02:27,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:02:27,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:02:27,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:02:27,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:02:27,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:02:27,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:02:27,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:02:27,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:02:27,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:02:27,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:02:27,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:02:27,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:02:27,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:02:27,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:02:27,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:02:27,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:02:27,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:02:27,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:02:27,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:02:27,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:02:27,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:02:27,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:02:27,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:02:27,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:02:27,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:02:27,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:02:27,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:02:27,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:02:27,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:02:27,193 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:02:27,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:02:27,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:02:27,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:02:27,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:02:27,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:02:27,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:02:27,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:02:27,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:02:27,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:02:27,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:02:27,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:02:27,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:02:27,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:02:27,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:02:27,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:02:27,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:02:27,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:02:27,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:02:27,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:02:27,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:02:27,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:02:27,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:02:27,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:02:27,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:02:27,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:02:27,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:02:27,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:02:27,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:02:27,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:02:27,659 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:02:27,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label09.c [2020-10-28 12:02:27,762 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be8cc9d68/67b9e688528343b7a7924eaf0319278a/FLAG1acb6dcd9 [2020-10-28 12:02:28,558 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:02:28,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label09.c [2020-10-28 12:02:28,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be8cc9d68/67b9e688528343b7a7924eaf0319278a/FLAG1acb6dcd9 [2020-10-28 12:02:28,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/be8cc9d68/67b9e688528343b7a7924eaf0319278a [2020-10-28 12:02:28,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:02:28,763 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:02:28,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:02:28,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:02:28,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:02:28,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:02:28" (1/1) ... [2020-10-28 12:02:28,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3536e044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:28, skipping insertion in model container [2020-10-28 12:02:28,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:02:28" (1/1) ... [2020-10-28 12:02:28,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:02:28,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:02:29,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:02:29,496 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:02:29,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:02:29,767 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:02:29,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29 WrapperNode [2020-10-28 12:02:29,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:02:29,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:02:29,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:02:29,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:02:29,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29" (1/1) ... [2020-10-28 12:02:29,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29" (1/1) ... [2020-10-28 12:02:29,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29" (1/1) ... [2020-10-28 12:02:29,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29" (1/1) ... [2020-10-28 12:02:29,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29" (1/1) ... [2020-10-28 12:02:29,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29" (1/1) ... [2020-10-28 12:02:29,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29" (1/1) ... [2020-10-28 12:02:29,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:02:29,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:02:29,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:02:29,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:02:29,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:02:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:02:30,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:02:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:02:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:02:30,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:02:30,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:02:30,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:02:30,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:02:30,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:02:30,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:02:30,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:02:30,044 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:02:30,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:02:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:02:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:02:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:02:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:02:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:02:30,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:02:32,258 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:02:32,258 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:02:32,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:02:32 BoogieIcfgContainer [2020-10-28 12:02:32,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:02:32,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:02:32,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:02:32,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:02:32,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:02:28" (1/3) ... [2020-10-28 12:02:32,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716bfa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:02:32, skipping insertion in model container [2020-10-28 12:02:32,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:29" (2/3) ... [2020-10-28 12:02:32,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@716bfa59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:02:32, skipping insertion in model container [2020-10-28 12:02:32,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:02:32" (3/3) ... [2020-10-28 12:02:32,272 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label09.c [2020-10-28 12:02:32,286 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:02:32,293 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:02:32,311 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:02:32,346 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:02:32,346 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:02:32,347 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:02:32,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:02:32,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:02:32,347 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:02:32,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:02:32,347 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:02:32,374 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:02:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 12:02:32,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:32,387 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] [2020-10-28 12:02:32,387 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:32,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2043490214, now seen corresponding path program 1 times [2020-10-28 12:02:32,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:32,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125058677] [2020-10-28 12:02:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:32,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:33,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:33,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 12:02:33,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-10-28 12:02:33,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:33,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:02:33,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:02:33,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:02:33,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:33,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:02:33,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:33,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:33,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:02:33,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:33,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125058677] [2020-10-28 12:02:33,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:02:33,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:02:33,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298970978] [2020-10-28 12:02:33,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:02:33,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:33,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:02:33,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:02:33,724 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:02:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:37,118 INFO L93 Difference]: Finished difference Result 796 states and 1392 transitions. [2020-10-28 12:02:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:02:37,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-28 12:02:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:37,152 INFO L225 Difference]: With dead ends: 796 [2020-10-28 12:02:37,152 INFO L226 Difference]: Without dead ends: 435 [2020-10-28 12:02:37,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:02:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-28 12:02:37,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2020-10-28 12:02:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-28 12:02:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 619 transitions. [2020-10-28 12:02:37,301 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 619 transitions. Word has length 73 [2020-10-28 12:02:37,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:37,303 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 619 transitions. [2020-10-28 12:02:37,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:02:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 619 transitions. [2020-10-28 12:02:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 12:02:37,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:37,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:37,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:02:37,319 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:37,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:37,320 INFO L82 PathProgramCache]: Analyzing trace with hash 645954923, now seen corresponding path program 1 times [2020-10-28 12:02:37,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:37,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017378104] [2020-10-28 12:02:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:39,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:39,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 12:02:39,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:02:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-10-28 12:02:39,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:39,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:39,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:02:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:02:39,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:39,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:39,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:39,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:39,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:39,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:02:39,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:39,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:39,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:02:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:39,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:39,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:39,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:02:39,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 12:02:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:39,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:02:39,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:02:39,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:40,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017378104] [2020-10-28 12:02:40,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:02:40,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 12:02:40,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870698869] [2020-10-28 12:02:40,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:02:40,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:40,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:02:40,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:02:40,151 INFO L87 Difference]: Start difference. First operand 431 states and 619 transitions. Second operand 8 states. [2020-10-28 12:02:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:45,009 INFO L93 Difference]: Finished difference Result 1666 states and 2473 transitions. [2020-10-28 12:02:45,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:02:45,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2020-10-28 12:02:45,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:45,026 INFO L225 Difference]: With dead ends: 1666 [2020-10-28 12:02:45,026 INFO L226 Difference]: Without dead ends: 1241 [2020-10-28 12:02:45,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-28 12:02:45,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2020-10-28 12:02:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1209. [2020-10-28 12:02:45,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2020-10-28 12:02:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1691 transitions. [2020-10-28 12:02:45,096 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1691 transitions. Word has length 145 [2020-10-28 12:02:45,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:45,097 INFO L481 AbstractCegarLoop]: Abstraction has 1209 states and 1691 transitions. [2020-10-28 12:02:45,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:02:45,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1691 transitions. [2020-10-28 12:02:45,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 12:02:45,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:45,100 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:45,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:02:45,100 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:45,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:45,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1281645015, now seen corresponding path program 1 times [2020-10-28 12:02:45,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:45,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101840868] [2020-10-28 12:02:45,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:45,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:45,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:48,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:48,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 12:02:48,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:02:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2867 [2020-10-28 12:02:48,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:48,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:02:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:02:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:48,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:48,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:48,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:48,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:02:48,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:48,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:48,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:02:48,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:48,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:48,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:48,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:02:48,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:48,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:02:48,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:48,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:48,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:48,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:02:48,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:02:48,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:48,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101840868] [2020-10-28 12:02:48,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:02:48,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:02:48,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685179951] [2020-10-28 12:02:48,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:02:48,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:48,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:02:48,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:02:48,495 INFO L87 Difference]: Start difference. First operand 1209 states and 1691 transitions. Second operand 7 states. [2020-10-28 12:02:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:51,653 INFO L93 Difference]: Finished difference Result 3039 states and 4222 transitions. [2020-10-28 12:02:51,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:02:51,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-28 12:02:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:51,667 INFO L225 Difference]: With dead ends: 3039 [2020-10-28 12:02:51,667 INFO L226 Difference]: Without dead ends: 1836 [2020-10-28 12:02:51,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:02:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2020-10-28 12:02:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1809. [2020-10-28 12:02:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2020-10-28 12:02:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2360 transitions. [2020-10-28 12:02:51,741 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2360 transitions. Word has length 146 [2020-10-28 12:02:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:51,741 INFO L481 AbstractCegarLoop]: Abstraction has 1809 states and 2360 transitions. [2020-10-28 12:02:51,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:02:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2360 transitions. [2020-10-28 12:02:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 12:02:51,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:51,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:02:51,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:02:51,745 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:51,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:51,746 INFO L82 PathProgramCache]: Analyzing trace with hash 274744050, now seen corresponding path program 1 times [2020-10-28 12:02:51,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:51,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859758554] [2020-10-28 12:02:51,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:52,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:52,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 12:02:52,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:52,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-28 12:02:52,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:52,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:02:52,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:02:52,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:52,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:52,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:52,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:52,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:02:52,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:52,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:02:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:02:52,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:52,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:52,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:52,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:02:52,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:02:52,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:52,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:52,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:02:52,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:52,713 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:52,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859758554] [2020-10-28 12:02:52,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:02:52,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:02:52,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233000768] [2020-10-28 12:02:52,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:02:52,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:52,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:02:52,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:02:52,736 INFO L87 Difference]: Start difference. First operand 1809 states and 2360 transitions. Second operand 5 states. [2020-10-28 12:02:55,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:55,600 INFO L93 Difference]: Finished difference Result 4017 states and 5353 transitions. [2020-10-28 12:02:55,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:02:55,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-28 12:02:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:55,621 INFO L225 Difference]: With dead ends: 4017 [2020-10-28 12:02:55,622 INFO L226 Difference]: Without dead ends: 2402 [2020-10-28 12:02:55,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:02:55,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2020-10-28 12:02:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2194. [2020-10-28 12:02:55,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2194 states. [2020-10-28 12:02:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 2828 transitions. [2020-10-28 12:02:55,713 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 2828 transitions. Word has length 204 [2020-10-28 12:02:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:55,716 INFO L481 AbstractCegarLoop]: Abstraction has 2194 states and 2828 transitions. [2020-10-28 12:02:55,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:02:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 2828 transitions. [2020-10-28 12:02:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-28 12:02:55,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:55,724 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:02:55,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:02:55,724 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:55,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:55,725 INFO L82 PathProgramCache]: Analyzing trace with hash -204423266, now seen corresponding path program 1 times [2020-10-28 12:02:55,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:55,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614812923] [2020-10-28 12:02:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:55,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:58,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:00,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:00,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-28 12:03:00,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:03:00,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 12:03:00,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:00,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:00,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:03:00,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:03:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:00,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:00,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:00,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:00,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:00,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:03:00,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:00,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:00,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:00,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:01,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:01,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:01,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:03:01,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:01,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:03:01,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:01,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:01,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:01,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:03:01,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:01,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:03:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:01,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:01,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:03:01,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:03:01,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:01,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:01,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:03:01,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:01,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614812923] [2020-10-28 12:03:01,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:01,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:01,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003605847] [2020-10-28 12:03:01,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:01,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:01,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:01,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:01,571 INFO L87 Difference]: Start difference. First operand 2194 states and 2828 transitions. Second operand 7 states. [2020-10-28 12:03:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:05,124 INFO L93 Difference]: Finished difference Result 5184 states and 6868 transitions. [2020-10-28 12:03:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:03:05,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-28 12:03:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:05,144 INFO L225 Difference]: With dead ends: 5184 [2020-10-28 12:03:05,145 INFO L226 Difference]: Without dead ends: 3184 [2020-10-28 12:03:05,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:03:05,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3184 states. [2020-10-28 12:03:05,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3184 to 3166. [2020-10-28 12:03:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3166 states. [2020-10-28 12:03:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 3952 transitions. [2020-10-28 12:03:05,245 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 3952 transitions. Word has length 262 [2020-10-28 12:03:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:05,246 INFO L481 AbstractCegarLoop]: Abstraction has 3166 states and 3952 transitions. [2020-10-28 12:03:05,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 3952 transitions. [2020-10-28 12:03:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-28 12:03:05,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:05,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:03:05,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:03:05,253 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:05,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash 643092042, now seen corresponding path program 1 times [2020-10-28 12:03:05,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:05,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867644490] [2020-10-28 12:03:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:05,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:05,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:05,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:10,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:10,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-28 12:03:10,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:03:10,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 12:03:10,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:10,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:10,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:03:10,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:03:10,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:10,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:10,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:10,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:03:10,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:10,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:10,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:10,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:10,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:10,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:10,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:03:10,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:10,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 12:03:10,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:10,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:10,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:03:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:10,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:03:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:10,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:10,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:10,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:03:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 12:03:10,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:10,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:03:10,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:11,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867644490] [2020-10-28 12:03:11,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:11,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:11,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780667875] [2020-10-28 12:03:11,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:11,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:11,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:11,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:11,228 INFO L87 Difference]: Start difference. First operand 3166 states and 3952 transitions. Second operand 7 states. [2020-10-28 12:03:14,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:14,771 INFO L93 Difference]: Finished difference Result 7691 states and 9996 transitions. [2020-10-28 12:03:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:03:14,772 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-28 12:03:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:14,797 INFO L225 Difference]: With dead ends: 7691 [2020-10-28 12:03:14,797 INFO L226 Difference]: Without dead ends: 4719 [2020-10-28 12:03:14,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:03:14,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4719 states. [2020-10-28 12:03:14,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4719 to 4703. [2020-10-28 12:03:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4703 states. [2020-10-28 12:03:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 5827 transitions. [2020-10-28 12:03:14,941 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 5827 transitions. Word has length 272 [2020-10-28 12:03:14,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:14,942 INFO L481 AbstractCegarLoop]: Abstraction has 4703 states and 5827 transitions. [2020-10-28 12:03:14,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:14,942 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 5827 transitions. [2020-10-28 12:03:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-28 12:03:14,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:14,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:14,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:03:14,950 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:14,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:14,951 INFO L82 PathProgramCache]: Analyzing trace with hash 903779694, now seen corresponding path program 1 times [2020-10-28 12:03:14,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:14,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48788529] [2020-10-28 12:03:14,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:15,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:15,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:15,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 12:03:15,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-10-28 12:03:15,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:15,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:03:15,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:03:15,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:15,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:15,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:15,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:15,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:15,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:03:15,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:15,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:15,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:15,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:16,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:16,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:03:16,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:03:16,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:16,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:16,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:16,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:16,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:03:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:16,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:16,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:03:16,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:03:16,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:16,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:16,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:16,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:16,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:03:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:03:16,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48788529] [2020-10-28 12:03:16,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:16,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:03:16,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800592326] [2020-10-28 12:03:16,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:03:16,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:16,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:03:16,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:03:16,312 INFO L87 Difference]: Start difference. First operand 4703 states and 5827 transitions. Second operand 5 states. [2020-10-28 12:03:19,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:19,147 INFO L93 Difference]: Finished difference Result 9235 states and 11499 transitions. [2020-10-28 12:03:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:19,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 273 [2020-10-28 12:03:19,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:19,182 INFO L225 Difference]: With dead ends: 9235 [2020-10-28 12:03:19,182 INFO L226 Difference]: Without dead ends: 4726 [2020-10-28 12:03:19,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:03:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2020-10-28 12:03:19,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4133. [2020-10-28 12:03:19,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4133 states. [2020-10-28 12:03:19,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 5116 transitions. [2020-10-28 12:03:19,334 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 5116 transitions. Word has length 273 [2020-10-28 12:03:19,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:19,335 INFO L481 AbstractCegarLoop]: Abstraction has 4133 states and 5116 transitions. [2020-10-28 12:03:19,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:03:19,335 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 5116 transitions. [2020-10-28 12:03:19,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-28 12:03:19,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:19,344 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:03:19,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:03:19,344 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:19,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1409885909, now seen corresponding path program 1 times [2020-10-28 12:03:19,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:19,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275463584] [2020-10-28 12:03:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:19,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:19,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:21,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:21,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 12:03:21,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:21,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2144 [2020-10-28 12:03:21,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:21,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:21,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:21,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:03:21,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:21,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:21,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:21,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:21,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:21,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:03:21,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:21,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:21,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:21,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:21,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:21,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:21,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 12:03:21,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:21,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:21,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:21,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:22,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:22,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:03:22,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:22,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:03:22,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:22,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:22,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:22,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:22,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:03:22,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:22,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275463584] [2020-10-28 12:03:22,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:22,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:22,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320616932] [2020-10-28 12:03:22,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:22,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:22,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:22,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:22,159 INFO L87 Difference]: Start difference. First operand 4133 states and 5116 transitions. Second operand 7 states. [2020-10-28 12:03:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:26,205 INFO L93 Difference]: Finished difference Result 9731 states and 12865 transitions. [2020-10-28 12:03:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:03:26,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-28 12:03:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:26,241 INFO L225 Difference]: With dead ends: 9731 [2020-10-28 12:03:26,242 INFO L226 Difference]: Without dead ends: 5792 [2020-10-28 12:03:26,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:03:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2020-10-28 12:03:26,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 5716. [2020-10-28 12:03:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5716 states. [2020-10-28 12:03:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 7044 transitions. [2020-10-28 12:03:26,435 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 7044 transitions. Word has length 273 [2020-10-28 12:03:26,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:26,436 INFO L481 AbstractCegarLoop]: Abstraction has 5716 states and 7044 transitions. [2020-10-28 12:03:26,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 7044 transitions. [2020-10-28 12:03:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-28 12:03:26,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:26,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:03:26,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:03:26,444 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:26,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:26,445 INFO L82 PathProgramCache]: Analyzing trace with hash 644868189, now seen corresponding path program 1 times [2020-10-28 12:03:26,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:26,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014850101] [2020-10-28 12:03:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:29,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:29,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-28 12:03:29,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2889 [2020-10-28 12:03:29,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:29,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:03:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:29,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:29,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:29,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:29,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:29,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:03:29,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:29,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:29,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:29,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:29,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:29,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:29,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:03:29,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:29,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:29,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:29,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:29,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:29,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:29,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:03:29,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:29,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:03:29,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:29,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:29,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:29,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:29,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:03:29,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:29,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014850101] [2020-10-28 12:03:29,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:29,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:29,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250801693] [2020-10-28 12:03:29,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:29,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:29,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:29,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:29,989 INFO L87 Difference]: Start difference. First operand 5716 states and 7044 transitions. Second operand 7 states. [2020-10-28 12:03:34,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:34,585 INFO L93 Difference]: Finished difference Result 13209 states and 16326 transitions. [2020-10-28 12:03:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:03:34,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-28 12:03:34,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:34,630 INFO L225 Difference]: With dead ends: 13209 [2020-10-28 12:03:34,631 INFO L226 Difference]: Without dead ends: 7687 [2020-10-28 12:03:34,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:03:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7687 states. [2020-10-28 12:03:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7687 to 7087. [2020-10-28 12:03:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7087 states. [2020-10-28 12:03:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7087 states to 7087 states and 8667 transitions. [2020-10-28 12:03:34,841 INFO L78 Accepts]: Start accepts. Automaton has 7087 states and 8667 transitions. Word has length 277 [2020-10-28 12:03:34,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:34,842 INFO L481 AbstractCegarLoop]: Abstraction has 7087 states and 8667 transitions. [2020-10-28 12:03:34,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7087 states and 8667 transitions. [2020-10-28 12:03:34,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-28 12:03:34,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:34,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:03:34,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:03:34,852 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:34,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:34,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1027009389, now seen corresponding path program 1 times [2020-10-28 12:03:34,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:34,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317542946] [2020-10-28 12:03:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:35,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:35,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-10-28 12:03:35,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:35,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-10-28 12:03:35,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:35,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:35,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:03:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:35,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:35,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:35,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:35,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:35,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:03:35,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:35,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:35,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:35,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:35,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:35,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:35,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:35,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:35,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:35,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:35,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 12:03:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:35,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:35,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:36,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:36,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 12:03:36,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:36,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 12:03:36,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:36,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:36,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:03:36,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:36,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317542946] [2020-10-28 12:03:36,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:36,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:03:36,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145566410] [2020-10-28 12:03:36,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:03:36,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:36,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:03:36,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:03:36,252 INFO L87 Difference]: Start difference. First operand 7087 states and 8667 transitions. Second operand 8 states. [2020-10-28 12:03:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:41,831 INFO L93 Difference]: Finished difference Result 15203 states and 18528 transitions. [2020-10-28 12:03:41,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 12:03:41,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 285 [2020-10-28 12:03:41,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:41,862 INFO L225 Difference]: With dead ends: 15203 [2020-10-28 12:03:41,862 INFO L226 Difference]: Without dead ends: 8310 [2020-10-28 12:03:41,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:03:41,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2020-10-28 12:03:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 8088. [2020-10-28 12:03:42,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8088 states. [2020-10-28 12:03:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8088 states to 8088 states and 9563 transitions. [2020-10-28 12:03:42,090 INFO L78 Accepts]: Start accepts. Automaton has 8088 states and 9563 transitions. Word has length 285 [2020-10-28 12:03:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:42,091 INFO L481 AbstractCegarLoop]: Abstraction has 8088 states and 9563 transitions. [2020-10-28 12:03:42,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:03:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 8088 states and 9563 transitions. [2020-10-28 12:03:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-28 12:03:42,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:42,101 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:03:42,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:03:42,102 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:42,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:42,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1741456408, now seen corresponding path program 1 times [2020-10-28 12:03:42,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:42,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [517415860] [2020-10-28 12:03:42,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:42,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:42,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:44,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:47,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:47,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-28 12:03:47,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:03:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4929 [2020-10-28 12:03:47,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:47,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:03:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:03:47,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:47,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:47,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:47,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:47,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:47,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:47,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:03:47,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:47,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:47,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:47,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:47,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:47,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:47,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:47,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:03:47,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:47,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 12:03:47,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:47,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:47,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:03:47,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:47,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:03:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:47,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:47,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:47,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:03:47,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:47,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 12:03:47,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:47,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:47,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:03:47,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:47,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [517415860] [2020-10-28 12:03:47,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:47,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:47,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971795695] [2020-10-28 12:03:47,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:47,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:47,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:47,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:47,751 INFO L87 Difference]: Start difference. First operand 8088 states and 9563 transitions. Second operand 7 states. [2020-10-28 12:03:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:51,593 INFO L93 Difference]: Finished difference Result 16995 states and 20149 transitions. [2020-10-28 12:03:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:03:51,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 293 [2020-10-28 12:03:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:51,629 INFO L225 Difference]: With dead ends: 16995 [2020-10-28 12:03:51,629 INFO L226 Difference]: Without dead ends: 9101 [2020-10-28 12:03:51,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:03:51,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9101 states. [2020-10-28 12:03:51,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9101 to 8674. [2020-10-28 12:03:51,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8674 states. [2020-10-28 12:03:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 10251 transitions. [2020-10-28 12:03:51,855 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 10251 transitions. Word has length 293 [2020-10-28 12:03:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:51,855 INFO L481 AbstractCegarLoop]: Abstraction has 8674 states and 10251 transitions. [2020-10-28 12:03:51,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:51,855 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 10251 transitions. [2020-10-28 12:03:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-28 12:03:51,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:51,864 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:51,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:03:51,864 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:51,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:51,865 INFO L82 PathProgramCache]: Analyzing trace with hash -653295807, now seen corresponding path program 1 times [2020-10-28 12:03:51,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:51,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1540240313] [2020-10-28 12:03:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:51,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:52,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:52,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:52,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-28 12:03:52,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-28 12:03:52,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:52,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 234 [2020-10-28 12:03:52,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:03:52,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:52,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:52,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:52,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:52,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:52,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:03:52,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:52,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:52,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:52,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:52,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:52,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:52,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:03:52,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:52,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:52,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:52,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 12:03:52,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 12:03:52,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:52,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:03:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 12:03:53,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1540240313] [2020-10-28 12:03:53,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:53,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:03:53,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316039458] [2020-10-28 12:03:53,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:03:53,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:53,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:03:53,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:03:53,123 INFO L87 Difference]: Start difference. First operand 8674 states and 10251 transitions. Second operand 6 states. [2020-10-28 12:03:56,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:56,142 INFO L93 Difference]: Finished difference Result 18910 states and 22486 transitions. [2020-10-28 12:03:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:56,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 295 [2020-10-28 12:03:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:56,176 INFO L225 Difference]: With dead ends: 18910 [2020-10-28 12:03:56,176 INFO L226 Difference]: Without dead ends: 10430 [2020-10-28 12:03:56,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10430 states. [2020-10-28 12:03:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10430 to 9252. [2020-10-28 12:03:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9252 states. [2020-10-28 12:03:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9252 states to 9252 states and 11100 transitions. [2020-10-28 12:03:56,408 INFO L78 Accepts]: Start accepts. Automaton has 9252 states and 11100 transitions. Word has length 295 [2020-10-28 12:03:56,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:56,409 INFO L481 AbstractCegarLoop]: Abstraction has 9252 states and 11100 transitions. [2020-10-28 12:03:56,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:03:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 9252 states and 11100 transitions. [2020-10-28 12:03:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-28 12:03:56,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:56,420 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:56,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:03:56,421 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:56,421 INFO L82 PathProgramCache]: Analyzing trace with hash -360489270, now seen corresponding path program 1 times [2020-10-28 12:03:56,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:56,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821321092] [2020-10-28 12:03:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:57,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:57,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 12:03:57,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-28 12:03:57,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:57,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-28 12:03:57,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:03:57,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:57,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:57,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:57,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:57,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:57,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:03:57,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:57,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:57,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:57,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:57,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:57,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:03:57,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:57,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 12:03:57,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:57,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:57,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:57,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:57,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:57,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:03:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:57,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:57,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:03:57,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:57,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:03:57,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:57,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 12:03:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-28 12:03:57,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821321092] [2020-10-28 12:03:57,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:57,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:03:57,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698972424] [2020-10-28 12:03:57,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:03:57,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:57,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:03:57,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:03:57,866 INFO L87 Difference]: Start difference. First operand 9252 states and 11100 transitions. Second operand 5 states. [2020-10-28 12:04:00,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:00,879 INFO L93 Difference]: Finished difference Result 19846 states and 24153 transitions. [2020-10-28 12:04:00,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:04:00,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-28 12:04:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:00,913 INFO L225 Difference]: With dead ends: 19846 [2020-10-28 12:04:00,913 INFO L226 Difference]: Without dead ends: 10788 [2020-10-28 12:04:00,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:00,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10788 states. [2020-10-28 12:04:01,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10788 to 10388. [2020-10-28 12:04:01,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10388 states. [2020-10-28 12:04:01,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10388 states to 10388 states and 12442 transitions. [2020-10-28 12:04:01,166 INFO L78 Accepts]: Start accepts. Automaton has 10388 states and 12442 transitions. Word has length 316 [2020-10-28 12:04:01,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:01,167 INFO L481 AbstractCegarLoop]: Abstraction has 10388 states and 12442 transitions. [2020-10-28 12:04:01,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:04:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 10388 states and 12442 transitions. [2020-10-28 12:04:01,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-28 12:04:01,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:01,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:01,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:04:01,180 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:01,180 INFO L82 PathProgramCache]: Analyzing trace with hash 656820905, now seen corresponding path program 1 times [2020-10-28 12:04:01,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:01,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958762280] [2020-10-28 12:04:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:02,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:02,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 12:04:02,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 995 [2020-10-28 12:04:02,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:02,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:04:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 212 [2020-10-28 12:04:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:02,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:02,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:02,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:02,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:02,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:04:02,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:02,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:02,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:02,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:02,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:02,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:02,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:04:02,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:02,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:02,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:04:02,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 12:04:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:02,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 12:04:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:02,863 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 189 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:04:02,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958762280] [2020-10-28 12:04:02,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:02,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:04:02,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373503531] [2020-10-28 12:04:02,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:04:02,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:02,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:04:02,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:02,866 INFO L87 Difference]: Start difference. First operand 10388 states and 12442 transitions. Second operand 6 states. [2020-10-28 12:04:06,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:06,199 INFO L93 Difference]: Finished difference Result 23153 states and 29441 transitions. [2020-10-28 12:04:06,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:04:06,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 342 [2020-10-28 12:04:06,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:06,263 INFO L225 Difference]: With dead ends: 23153 [2020-10-28 12:04:06,263 INFO L226 Difference]: Without dead ends: 12959 [2020-10-28 12:04:06,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:04:06,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12959 states. [2020-10-28 12:04:06,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12959 to 12750. [2020-10-28 12:04:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12750 states. [2020-10-28 12:04:06,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12750 states to 12750 states and 15553 transitions. [2020-10-28 12:04:06,636 INFO L78 Accepts]: Start accepts. Automaton has 12750 states and 15553 transitions. Word has length 342 [2020-10-28 12:04:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:06,637 INFO L481 AbstractCegarLoop]: Abstraction has 12750 states and 15553 transitions. [2020-10-28 12:04:06,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:04:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 12750 states and 15553 transitions. [2020-10-28 12:04:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-28 12:04:06,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:06,650 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-28 12:04:06,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:04:06,650 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:06,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:06,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1026982241, now seen corresponding path program 1 times [2020-10-28 12:04:06,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:06,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502199527] [2020-10-28 12:04:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:07,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:08,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:11,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:11,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 362 [2020-10-28 12:04:11,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:04:11,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 12:04:11,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:11,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:11,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:04:11,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:04:11,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:11,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:11,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:11,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:11,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:11,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:11,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:11,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:12,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:04:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:12,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:12,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:12,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:12,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:04:12,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 12:04:12,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:12,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:04:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:12,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 12:04:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:12,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:12,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:04:12,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:12,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:04:12,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:12,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:04:12,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-28 12:04:12,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502199527] [2020-10-28 12:04:12,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:12,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:12,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769794215] [2020-10-28 12:04:12,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:12,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:12,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:12,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:12,489 INFO L87 Difference]: Start difference. First operand 12750 states and 15553 transitions. Second operand 7 states. [2020-10-28 12:04:14,553 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 12:04:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:16,366 INFO L93 Difference]: Finished difference Result 26852 states and 33119 transitions. [2020-10-28 12:04:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:04:16,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-28 12:04:16,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:16,505 INFO L225 Difference]: With dead ends: 26852 [2020-10-28 12:04:16,505 INFO L226 Difference]: Without dead ends: 14296 [2020-10-28 12:04:16,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:16,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14296 states. [2020-10-28 12:04:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14296 to 13505. [2020-10-28 12:04:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13505 states. [2020-10-28 12:04:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13505 states to 13505 states and 16280 transitions. [2020-10-28 12:04:16,829 INFO L78 Accepts]: Start accepts. Automaton has 13505 states and 16280 transitions. Word has length 346 [2020-10-28 12:04:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:16,830 INFO L481 AbstractCegarLoop]: Abstraction has 13505 states and 16280 transitions. [2020-10-28 12:04:16,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:16,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13505 states and 16280 transitions. [2020-10-28 12:04:16,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-10-28 12:04:16,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:16,842 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:16,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:04:16,843 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:16,844 INFO L82 PathProgramCache]: Analyzing trace with hash -585528831, now seen corresponding path program 1 times [2020-10-28 12:04:16,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:16,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18711840] [2020-10-28 12:04:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:16,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:18,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:18,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-28 12:04:18,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:18,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1685 [2020-10-28 12:04:18,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:18,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:04:18,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:04:18,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:18,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:18,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:18,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:18,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:18,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:18,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:18,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:18,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:18,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:18,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:18,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:18,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:18,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:04:18,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:04:18,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:18,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:04:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:18,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:18,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:18,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:04:18,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:18,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 12:04:18,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:18,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:18,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:18,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:04:18,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:04:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:19,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:19,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:04:19,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 12:04:19,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:19,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:19,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:04:19,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:04:19,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18711840] [2020-10-28 12:04:19,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:19,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:19,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278153194] [2020-10-28 12:04:19,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:19,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:19,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:19,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:19,140 INFO L87 Difference]: Start difference. First operand 13505 states and 16280 transitions. Second operand 7 states. [2020-10-28 12:04:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:23,303 INFO L93 Difference]: Finished difference Result 28203 states and 34282 transitions. [2020-10-28 12:04:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:23,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 354 [2020-10-28 12:04:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:23,353 INFO L225 Difference]: With dead ends: 28203 [2020-10-28 12:04:23,353 INFO L226 Difference]: Without dead ends: 14892 [2020-10-28 12:04:23,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:23,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14892 states. [2020-10-28 12:04:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14892 to 14661. [2020-10-28 12:04:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14661 states. [2020-10-28 12:04:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14661 states to 14661 states and 17658 transitions. [2020-10-28 12:04:23,702 INFO L78 Accepts]: Start accepts. Automaton has 14661 states and 17658 transitions. Word has length 354 [2020-10-28 12:04:23,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:23,702 INFO L481 AbstractCegarLoop]: Abstraction has 14661 states and 17658 transitions. [2020-10-28 12:04:23,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:23,703 INFO L276 IsEmpty]: Start isEmpty. Operand 14661 states and 17658 transitions. [2020-10-28 12:04:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-10-28 12:04:23,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:23,713 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:04:23,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:04:23,713 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:23,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:23,714 INFO L82 PathProgramCache]: Analyzing trace with hash 486725001, now seen corresponding path program 1 times [2020-10-28 12:04:23,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:23,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948166099] [2020-10-28 12:04:23,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:23,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:23,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:25,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:26,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:26,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 374 [2020-10-28 12:04:26,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2958 [2020-10-28 12:04:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:26,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:04:26,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:04:26,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:26,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:26,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:26,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:26,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:26,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:26,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:26,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:26,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:26,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:26,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:26,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:04:26,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:26,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 12:04:26,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:26,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:26,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:26,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:26,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:04:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:27,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:27,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:04:27,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:27,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:04:27,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:27,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:27,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:27,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:04:27,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:27,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:04:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:27,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:27,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:27,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:04:27,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:04:27,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:27,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:27,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:04:27,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:27,359 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 12:04:27,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948166099] [2020-10-28 12:04:27,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:27,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:04:27,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688570478] [2020-10-28 12:04:27,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:04:27,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:27,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:04:27,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:04:27,361 INFO L87 Difference]: Start difference. First operand 14661 states and 17658 transitions. Second operand 8 states. [2020-10-28 12:04:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:33,322 INFO L93 Difference]: Finished difference Result 30917 states and 37335 transitions. [2020-10-28 12:04:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:04:33,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 358 [2020-10-28 12:04:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:33,365 INFO L225 Difference]: With dead ends: 30917 [2020-10-28 12:04:33,365 INFO L226 Difference]: Without dead ends: 16450 [2020-10-28 12:04:33,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:04:33,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16450 states. [2020-10-28 12:04:33,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16450 to 16200. [2020-10-28 12:04:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16200 states. [2020-10-28 12:04:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16200 states to 16200 states and 19460 transitions. [2020-10-28 12:04:33,754 INFO L78 Accepts]: Start accepts. Automaton has 16200 states and 19460 transitions. Word has length 358 [2020-10-28 12:04:33,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:33,755 INFO L481 AbstractCegarLoop]: Abstraction has 16200 states and 19460 transitions. [2020-10-28 12:04:33,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:04:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 16200 states and 19460 transitions. [2020-10-28 12:04:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2020-10-28 12:04:33,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:33,768 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:33,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:04:33,769 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:33,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:33,769 INFO L82 PathProgramCache]: Analyzing trace with hash 245579569, now seen corresponding path program 1 times [2020-10-28 12:04:33,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:33,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066144897] [2020-10-28 12:04:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:33,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:34,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:34,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:34,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:34,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 377 [2020-10-28 12:04:34,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:04:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-28 12:04:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:34,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:04:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-28 12:04:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:34,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:35,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:35,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:35,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:35,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:04:35,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:04:35,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:35,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:35,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:35,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:35,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:35,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:35,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 12:04:35,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:35,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:35,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:04:35,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:35,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:35,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:35,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:35,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:04:35,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:35,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:04:35,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:35,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-28 12:04:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:04:35,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:04:35,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066144897] [2020-10-28 12:04:35,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:04:35,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:04:35,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113245435] [2020-10-28 12:04:35,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:04:35,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:35,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:04:35,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:35,518 INFO L87 Difference]: Start difference. First operand 16200 states and 19460 transitions. Second operand 6 states. [2020-10-28 12:04:37,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:37,605 INFO L93 Difference]: Finished difference Result 32030 states and 38490 transitions. [2020-10-28 12:04:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:04:37,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 363 [2020-10-28 12:04:37,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:37,647 INFO L225 Difference]: With dead ends: 32030 [2020-10-28 12:04:37,647 INFO L226 Difference]: Without dead ends: 16024 [2020-10-28 12:04:37,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:37,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16024 states. [2020-10-28 12:04:37,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16024 to 15597. [2020-10-28 12:04:37,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15597 states. [2020-10-28 12:04:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15597 states to 15597 states and 18628 transitions. [2020-10-28 12:04:38,028 INFO L78 Accepts]: Start accepts. Automaton has 15597 states and 18628 transitions. Word has length 363 [2020-10-28 12:04:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:38,028 INFO L481 AbstractCegarLoop]: Abstraction has 15597 states and 18628 transitions. [2020-10-28 12:04:38,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:04:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand 15597 states and 18628 transitions. [2020-10-28 12:04:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-10-28 12:04:38,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:38,040 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:38,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:04:38,040 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:38,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:38,041 INFO L82 PathProgramCache]: Analyzing trace with hash -410291247, now seen corresponding path program 1 times [2020-10-28 12:04:38,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:38,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464763977] [2020-10-28 12:04:38,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:39,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:40,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:40,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-28 12:04:40,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:40,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2696 [2020-10-28 12:04:40,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:40,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:04:40,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-28 12:04:40,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:41,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:41,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:41,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:04:41,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:04:41,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:04:41,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:04:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 12:04:41,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-28 12:04:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 12:04:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 12:04:41,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464763977] [2020-10-28 12:04:41,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:41,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:04:41,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638184906] [2020-10-28 12:04:41,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:04:41,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:41,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:04:41,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:04:41,496 INFO L87 Difference]: Start difference. First operand 15597 states and 18628 transitions. Second operand 5 states. [2020-10-28 12:04:44,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:44,983 INFO L93 Difference]: Finished difference Result 32184 states and 38366 transitions. [2020-10-28 12:04:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:04:44,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 364 [2020-10-28 12:04:44,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:45,030 INFO L225 Difference]: With dead ends: 32184 [2020-10-28 12:04:45,031 INFO L226 Difference]: Without dead ends: 16781 [2020-10-28 12:04:45,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:45,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16781 states. [2020-10-28 12:04:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16781 to 16549. [2020-10-28 12:04:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16549 states. [2020-10-28 12:04:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16549 states to 16549 states and 19525 transitions. [2020-10-28 12:04:45,458 INFO L78 Accepts]: Start accepts. Automaton has 16549 states and 19525 transitions. Word has length 364 [2020-10-28 12:04:45,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:45,459 INFO L481 AbstractCegarLoop]: Abstraction has 16549 states and 19525 transitions. [2020-10-28 12:04:45,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:04:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 16549 states and 19525 transitions. [2020-10-28 12:04:45,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-10-28 12:04:45,472 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:45,473 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:45,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:04:45,473 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:45,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:45,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1438336305, now seen corresponding path program 1 times [2020-10-28 12:04:45,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:45,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200114089] [2020-10-28 12:04:45,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:45,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:45,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:50,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:50,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 404 [2020-10-28 12:04:50,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:04:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 12:04:50,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:50,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:04:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-28 12:04:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:50,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:50,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:50,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:50,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:50,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:50,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:50,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:50,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:50,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:50,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:50,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:50,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:50,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:04:50,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:50,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:50,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:04:50,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:50,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:50,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:51,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:51,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:04:51,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:51,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-28 12:04:51,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:51,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:51,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:51,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-28 12:04:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:51,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:51,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:04:51,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 12:04:51,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:51,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:51,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:04:51,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 327 proven. 4 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 12:04:51,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200114089] [2020-10-28 12:04:51,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:51,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:51,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097876615] [2020-10-28 12:04:51,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:51,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:51,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:51,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:51,565 INFO L87 Difference]: Start difference. First operand 16549 states and 19525 transitions. Second operand 7 states. [2020-10-28 12:04:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:54,977 INFO L93 Difference]: Finished difference Result 29995 states and 35683 transitions. [2020-10-28 12:04:54,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:04:54,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 388 [2020-10-28 12:04:54,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:55,020 INFO L225 Difference]: With dead ends: 29995 [2020-10-28 12:04:55,020 INFO L226 Difference]: Without dead ends: 13640 [2020-10-28 12:04:55,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13640 states. [2020-10-28 12:04:55,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13640 to 13059. [2020-10-28 12:04:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13059 states. [2020-10-28 12:04:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13059 states to 13059 states and 14956 transitions. [2020-10-28 12:04:55,342 INFO L78 Accepts]: Start accepts. Automaton has 13059 states and 14956 transitions. Word has length 388 [2020-10-28 12:04:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:55,343 INFO L481 AbstractCegarLoop]: Abstraction has 13059 states and 14956 transitions. [2020-10-28 12:04:55,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 13059 states and 14956 transitions. [2020-10-28 12:04:55,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-10-28 12:04:55,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:55,355 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:55,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:04:55,355 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:55,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:55,356 INFO L82 PathProgramCache]: Analyzing trace with hash 208465751, now seen corresponding path program 1 times [2020-10-28 12:04:55,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:55,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57743160] [2020-10-28 12:04:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:55,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:56,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:57,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:59,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-28 12:05:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:05:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 12:05:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:00,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 258 [2020-10-28 12:05:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:05:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:00,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:00,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:00,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:00,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:00,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:00,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:00,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:00,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:00,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:00,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:00,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:00,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:00,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:00,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:05:00,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:00,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:00,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:00,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:00,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:00,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:00,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 12:05:00,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:05:00,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:00,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:05:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:00,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2020-10-28 12:05:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:00,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:00,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:05:00,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 12:05:00,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:00,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:00,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:05:00,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:01,582 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:05:01,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57743160] [2020-10-28 12:05:01,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:01,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:01,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133543872] [2020-10-28 12:05:01,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:01,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:01,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:01,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:01,648 INFO L87 Difference]: Start difference. First operand 13059 states and 14956 transitions. Second operand 7 states. [2020-10-28 12:05:02,601 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-28 12:05:05,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:05,789 INFO L93 Difference]: Finished difference Result 26180 states and 30171 transitions. [2020-10-28 12:05:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:05:05,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 392 [2020-10-28 12:05:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:05,815 INFO L225 Difference]: With dead ends: 26180 [2020-10-28 12:05:05,815 INFO L226 Difference]: Without dead ends: 13115 [2020-10-28 12:05:05,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:05,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13115 states. [2020-10-28 12:05:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13115 to 13055. [2020-10-28 12:05:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13055 states. [2020-10-28 12:05:06,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13055 states to 13055 states and 14889 transitions. [2020-10-28 12:05:06,062 INFO L78 Accepts]: Start accepts. Automaton has 13055 states and 14889 transitions. Word has length 392 [2020-10-28 12:05:06,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:06,063 INFO L481 AbstractCegarLoop]: Abstraction has 13055 states and 14889 transitions. [2020-10-28 12:05:06,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:06,063 INFO L276 IsEmpty]: Start isEmpty. Operand 13055 states and 14889 transitions. [2020-10-28 12:05:06,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-28 12:05:06,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:06,075 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:06,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:05:06,076 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:06,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:06,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2132405441, now seen corresponding path program 1 times [2020-10-28 12:05:06,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:06,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134468060] [2020-10-28 12:05:06,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:06,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:09,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:09,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-28 12:05:09,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3100 [2020-10-28 12:05:09,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:09,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:05:09,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:05:09,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:09,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:09,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:09,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:09,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:09,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:05:09,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:09,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:09,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:09,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:09,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:09,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:09,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:09,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:09,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:09,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:09,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:05:09,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:09,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:09,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:09,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:09,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:09,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 12:05:09,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:09,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:09,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:05:09,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:09,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:05:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:09,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:09,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:09,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:05:09,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:09,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 12:05:09,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:09,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:09,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:09,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:05:09,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:05:09,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134468060] [2020-10-28 12:05:09,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:09,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:09,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072086099] [2020-10-28 12:05:09,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:09,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:09,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:09,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:09,951 INFO L87 Difference]: Start difference. First operand 13055 states and 14889 transitions. Second operand 7 states. [2020-10-28 12:05:14,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:14,249 INFO L93 Difference]: Finished difference Result 26343 states and 30134 transitions. [2020-10-28 12:05:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:14,252 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-28 12:05:14,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:14,280 INFO L225 Difference]: With dead ends: 26343 [2020-10-28 12:05:14,280 INFO L226 Difference]: Without dead ends: 13482 [2020-10-28 12:05:14,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:05:14,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13482 states. [2020-10-28 12:05:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13482 to 13443. [2020-10-28 12:05:14,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13443 states. [2020-10-28 12:05:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13443 states to 13443 states and 15303 transitions. [2020-10-28 12:05:14,486 INFO L78 Accepts]: Start accepts. Automaton has 13443 states and 15303 transitions. Word has length 393 [2020-10-28 12:05:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:14,486 INFO L481 AbstractCegarLoop]: Abstraction has 13443 states and 15303 transitions. [2020-10-28 12:05:14,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 13443 states and 15303 transitions. [2020-10-28 12:05:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-28 12:05:14,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:14,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:14,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:05:14,499 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:14,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:14,500 INFO L82 PathProgramCache]: Analyzing trace with hash -846826377, now seen corresponding path program 1 times [2020-10-28 12:05:14,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:14,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862592374] [2020-10-28 12:05:14,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:14,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:17,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:18,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:18,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 422 [2020-10-28 12:05:18,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3852 [2020-10-28 12:05:18,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:18,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 347 [2020-10-28 12:05:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:05:18,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:18,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:18,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:18,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:18,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:18,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:18,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:18,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:18,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:18,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:18,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:18,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:18,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:05:18,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:18,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:05:18,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:18,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:18,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:18,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:18,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:05:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:18,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:18,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:18,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:05:18,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:18,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:05:18,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:18,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:18,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:18,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:18,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:05:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:18,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:18,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:05:18,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:18,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:05:18,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:18,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:18,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:05:18,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 198 proven. 3 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-28 12:05:19,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862592374] [2020-10-28 12:05:19,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:19,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:05:19,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307051426] [2020-10-28 12:05:19,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:05:19,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:19,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:05:19,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:19,015 INFO L87 Difference]: Start difference. First operand 13443 states and 15303 transitions. Second operand 5 states. [2020-10-28 12:05:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:22,437 INFO L93 Difference]: Finished difference Result 29396 states and 33858 transitions. [2020-10-28 12:05:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:22,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 406 [2020-10-28 12:05:22,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:22,473 INFO L225 Difference]: With dead ends: 29396 [2020-10-28 12:05:22,473 INFO L226 Difference]: Without dead ends: 16147 [2020-10-28 12:05:22,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:22,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16147 states. [2020-10-28 12:05:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16147 to 14975. [2020-10-28 12:05:22,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14975 states. [2020-10-28 12:05:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14975 states to 14975 states and 17220 transitions. [2020-10-28 12:05:22,755 INFO L78 Accepts]: Start accepts. Automaton has 14975 states and 17220 transitions. Word has length 406 [2020-10-28 12:05:22,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:22,756 INFO L481 AbstractCegarLoop]: Abstraction has 14975 states and 17220 transitions. [2020-10-28 12:05:22,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:05:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 14975 states and 17220 transitions. [2020-10-28 12:05:22,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-28 12:05:22,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:22,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:22,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:05:22,768 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:22,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1483033083, now seen corresponding path program 1 times [2020-10-28 12:05:22,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:22,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990434175] [2020-10-28 12:05:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:23,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:23,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-28 12:05:23,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-10-28 12:05:23,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:23,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 363 [2020-10-28 12:05:23,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 12:05:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:23,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:23,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:23,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:23,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:23,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:05:23,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:23,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:23,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:23,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:23,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:23,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:05:23,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:05:23,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:23,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:23,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:23,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:24,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:05:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:24,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:24,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 12:05:24,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:24,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:05:24,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:24,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:24,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-28 12:05:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-28 12:05:24,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990434175] [2020-10-28 12:05:24,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:24,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:05:24,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830985735] [2020-10-28 12:05:24,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:05:24,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:24,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:05:24,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:24,442 INFO L87 Difference]: Start difference. First operand 14975 states and 17220 transitions. Second operand 5 states. [2020-10-28 12:05:27,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:27,609 INFO L93 Difference]: Finished difference Result 33025 states and 38101 transitions. [2020-10-28 12:05:27,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:27,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2020-10-28 12:05:27,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:27,644 INFO L225 Difference]: With dead ends: 33025 [2020-10-28 12:05:27,644 INFO L226 Difference]: Without dead ends: 18244 [2020-10-28 12:05:27,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18244 states. [2020-10-28 12:05:27,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18244 to 16141. [2020-10-28 12:05:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16141 states. [2020-10-28 12:05:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16141 states to 16141 states and 18587 transitions. [2020-10-28 12:05:27,968 INFO L78 Accepts]: Start accepts. Automaton has 16141 states and 18587 transitions. Word has length 424 [2020-10-28 12:05:27,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:27,968 INFO L481 AbstractCegarLoop]: Abstraction has 16141 states and 18587 transitions. [2020-10-28 12:05:27,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:05:27,968 INFO L276 IsEmpty]: Start isEmpty. Operand 16141 states and 18587 transitions. [2020-10-28 12:05:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-28 12:05:27,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:27,982 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:27,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:05:27,982 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:27,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1289638954, now seen corresponding path program 1 times [2020-10-28 12:05:27,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:27,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229521168] [2020-10-28 12:05:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:28,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:29,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:32,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:32,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-28 12:05:32,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:05:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4682 [2020-10-28 12:05:32,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:32,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:32,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-28 12:05:32,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:05:32,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:32,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:32,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:32,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:32,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:32,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:05:32,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:32,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:32,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:32,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:32,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:32,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:32,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 12:05:32,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:32,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:33,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:33,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:33,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:33,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:33,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:05:33,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:33,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:33,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:33,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:33,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:05:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:33,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:33,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:05:33,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:05:33,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:33,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:05:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:05:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-28 12:05:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:33,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:33,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:33,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:05:33,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 12:05:33,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:33,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:05:33,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 480 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-28 12:05:33,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229521168] [2020-10-28 12:05:33,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:33,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:33,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619921181] [2020-10-28 12:05:33,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:33,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:33,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:33,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:33,592 INFO L87 Difference]: Start difference. First operand 16141 states and 18587 transitions. Second operand 7 states. [2020-10-28 12:05:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:37,775 INFO L93 Difference]: Finished difference Result 32326 states and 37235 transitions. [2020-10-28 12:05:37,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:05:37,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 478 [2020-10-28 12:05:37,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:37,817 INFO L225 Difference]: With dead ends: 32326 [2020-10-28 12:05:37,818 INFO L226 Difference]: Without dead ends: 16379 [2020-10-28 12:05:37,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16379 states. [2020-10-28 12:05:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16379 to 16342. [2020-10-28 12:05:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16342 states. [2020-10-28 12:05:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16342 states to 16342 states and 18706 transitions. [2020-10-28 12:05:38,124 INFO L78 Accepts]: Start accepts. Automaton has 16342 states and 18706 transitions. Word has length 478 [2020-10-28 12:05:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:38,125 INFO L481 AbstractCegarLoop]: Abstraction has 16342 states and 18706 transitions. [2020-10-28 12:05:38,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 16342 states and 18706 transitions. [2020-10-28 12:05:38,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-28 12:05:38,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:38,141 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:38,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:05:38,141 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:38,142 INFO L82 PathProgramCache]: Analyzing trace with hash -202675306, now seen corresponding path program 1 times [2020-10-28 12:05:38,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:38,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461680467] [2020-10-28 12:05:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:38,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:39,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:41,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:43,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:43,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 512 [2020-10-28 12:05:43,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:05:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 12:05:43,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:43,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-28 12:05:43,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:05:43,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:43,504 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:05:43,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:43,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:43,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:43,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:43,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:43,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:05:43,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:43,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:43,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:43,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:43,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:43,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:43,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:43,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:05:43,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:43,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:05:43,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:43,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:43,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:05:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:43,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:05:43,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:05:43,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:43,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:43,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:43,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:05:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:43,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:43,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:05:43,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:43,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:05:43,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:43,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:05:43,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:43,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-28 12:05:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:43,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:43,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:43,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:05:43,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:43,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:05:43,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:43,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:43,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:05:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 480 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:05:44,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461680467] [2020-10-28 12:05:44,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:44,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:44,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873126597] [2020-10-28 12:05:44,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:44,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:44,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:44,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:44,258 INFO L87 Difference]: Start difference. First operand 16342 states and 18706 transitions. Second operand 7 states. [2020-10-28 12:05:44,404 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 12:05:46,479 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-28 12:05:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:48,096 INFO L93 Difference]: Finished difference Result 34468 states and 39415 transitions. [2020-10-28 12:05:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:48,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 494 [2020-10-28 12:05:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:48,130 INFO L225 Difference]: With dead ends: 34468 [2020-10-28 12:05:48,131 INFO L226 Difference]: Without dead ends: 18320 [2020-10-28 12:05:48,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:48,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18320 states. [2020-10-28 12:05:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18320 to 17882. [2020-10-28 12:05:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17882 states. [2020-10-28 12:05:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17882 states to 17882 states and 20386 transitions. [2020-10-28 12:05:48,394 INFO L78 Accepts]: Start accepts. Automaton has 17882 states and 20386 transitions. Word has length 494 [2020-10-28 12:05:48,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:48,395 INFO L481 AbstractCegarLoop]: Abstraction has 17882 states and 20386 transitions. [2020-10-28 12:05:48,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 17882 states and 20386 transitions. [2020-10-28 12:05:48,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2020-10-28 12:05:48,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:48,412 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:48,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 12:05:48,412 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:48,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:48,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1376417686, now seen corresponding path program 1 times [2020-10-28 12:05:48,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:48,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858163205] [2020-10-28 12:05:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:48,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:48,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:51,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 513 [2020-10-28 12:05:53,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:05:53,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 12:05:53,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:53,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-28 12:05:53,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:05:53,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:53,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:05:53,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:53,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:05:53,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:05:53,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:53,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:53,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:53,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:05:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:05:53,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:05:53,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:53,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:05:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:54,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:54,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:54,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:54,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:05:54,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 12:05:54,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:54,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:05:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:05:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:54,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:54,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:05:54,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:54,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 12:05:54,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:54,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:05:54,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 480 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:05:54,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858163205] [2020-10-28 12:05:54,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:54,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:54,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178468312] [2020-10-28 12:05:54,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:54,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:54,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:54,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:54,512 INFO L87 Difference]: Start difference. First operand 17882 states and 20386 transitions. Second operand 7 states.