/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=DEEPEST --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/array-tiling/pr5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:55:59,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:55:59,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:55:59,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:55:59,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:55:59,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:55:59,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:55:59,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:55:59,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:55:59,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:55:59,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:55:59,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:55:59,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:55:59,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:55:59,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:55:59,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:55:59,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:55:59,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:55:59,111 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:55:59,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:55:59,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:55:59,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:55:59,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:55:59,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:55:59,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:55:59,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:55:59,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:55:59,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:55:59,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:55:59,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:55:59,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:55:59,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:55:59,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:55:59,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:55:59,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:55:59,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:55:59,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:55:59,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:55:59,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:55:59,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:55:59,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:55:59,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 14:55:59,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:55:59,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:55:59,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:55:59,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:55:59,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:55:59,178 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:55:59,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:55:59,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:55:59,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:55:59,179 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:55:59,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:55:59,179 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:55:59,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:55:59,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:55:59,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:55:59,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:55:59,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:55:59,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:55:59,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:55:59,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:55:59,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:55:59,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:55:59,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:55:59,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:55:59,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:55:59,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:55:59,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:55:59,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:55:59,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:55:59,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:55:59,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:55:59,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:55:59,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:55:59,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:55:59,734 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:55:59,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr5.c [2020-10-27 14:55:59,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db0f78afb/b7c2d71449ef444aad76979434ef804d/FLAG796403c47 [2020-10-27 14:56:00,576 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:56:00,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/pr5.c [2020-10-27 14:56:00,587 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db0f78afb/b7c2d71449ef444aad76979434ef804d/FLAG796403c47 [2020-10-27 14:56:00,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db0f78afb/b7c2d71449ef444aad76979434ef804d [2020-10-27 14:56:00,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:56:00,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:56:00,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:56:00,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:56:00,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:56:00,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:56:00" (1/1) ... [2020-10-27 14:56:00,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59405cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:00, skipping insertion in model container [2020-10-27 14:56:00,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:56:00" (1/1) ... [2020-10-27 14:56:00,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:56:00,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:56:01,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:56:01,150 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:56:01,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:56:01,199 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:56:01,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01 WrapperNode [2020-10-27 14:56:01,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:56:01,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:56:01,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:56:01,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:56:01,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01" (1/1) ... [2020-10-27 14:56:01,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01" (1/1) ... [2020-10-27 14:56:01,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01" (1/1) ... [2020-10-27 14:56:01,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01" (1/1) ... [2020-10-27 14:56:01,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01" (1/1) ... [2020-10-27 14:56:01,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01" (1/1) ... [2020-10-27 14:56:01,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01" (1/1) ... [2020-10-27 14:56:01,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:56:01,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:56:01,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:56:01,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:56:01,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:56:01,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:56:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:56:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:56:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:56:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:56:01,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:56:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:56:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:56:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:56:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:56:01,376 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:56:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:56:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:56:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:56:01,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:56:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:56:01,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:56:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:56:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:56:01,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:56:02,079 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:56:02,080 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:56:02,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:56:02 BoogieIcfgContainer [2020-10-27 14:56:02,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:56:02,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:56:02,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:56:02,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:56:02,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:56:00" (1/3) ... [2020-10-27 14:56:02,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c9e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:56:02, skipping insertion in model container [2020-10-27 14:56:02,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:56:01" (2/3) ... [2020-10-27 14:56:02,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c9e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:56:02, skipping insertion in model container [2020-10-27 14:56:02,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:56:02" (3/3) ... [2020-10-27 14:56:02,092 INFO L111 eAbstractionObserver]: Analyzing ICFG pr5.c [2020-10-27 14:56:02,106 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:56:02,112 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:56:02,127 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:56:02,156 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:56:02,157 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:56:02,157 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:56:02,157 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:56:02,157 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:56:02,157 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:56:02,158 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:56:02,158 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:56:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-27 14:56:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:56:02,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:02,185 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] [2020-10-27 14:56:02,186 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:02,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:02,193 INFO L82 PathProgramCache]: Analyzing trace with hash 621617010, now seen corresponding path program 1 times [2020-10-27 14:56:02,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:02,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051923480] [2020-10-27 14:56:02,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:02,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:02,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:04,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:04,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:56:04,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:56:04,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2135 [2020-10-27 14:56:04,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:04,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:56:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:56:04,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:04,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 14:56:04,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:04,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:04,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:04,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:04,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:04,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:56:04,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:04,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:04,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:04,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:04,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:04,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:04,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:04,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:04,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:04,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:56:04,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:04,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:04,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051923480] [2020-10-27 14:56:04,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:04,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 14:56:04,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057007427] [2020-10-27 14:56:04,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:56:04,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:04,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:56:04,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:56:04,736 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-10-27 14:56:05,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:05,307 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2020-10-27 14:56:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:56:05,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-27 14:56:05,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:05,320 INFO L225 Difference]: With dead ends: 78 [2020-10-27 14:56:05,320 INFO L226 Difference]: Without dead ends: 40 [2020-10-27 14:56:05,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:56:05,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-27 14:56:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-27 14:56:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:56:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-27 14:56:05,398 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 23 [2020-10-27 14:56:05,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:05,399 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-27 14:56:05,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:56:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-27 14:56:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:56:05,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:05,403 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] [2020-10-27 14:56:05,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:56:05,404 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:05,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:05,404 INFO L82 PathProgramCache]: Analyzing trace with hash 92069298, now seen corresponding path program 1 times [2020-10-27 14:56:05,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:05,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166294413] [2020-10-27 14:56:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:05,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:06,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-27 14:56:06,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 14:56:06,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-10-27 14:56:06,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:56:06,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:56:06,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:56:06,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 14:56:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:06,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:06,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:06,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:06,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:06,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:06,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:06,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 14:56:06,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:56:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:06,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:06,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166294413] [2020-10-27 14:56:06,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:06,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 14:56:06,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349852101] [2020-10-27 14:56:06,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:56:06,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:06,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:56:06,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:56:06,562 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 9 states. [2020-10-27 14:56:07,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:07,626 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-10-27 14:56:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:56:07,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-10-27 14:56:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:07,631 INFO L225 Difference]: With dead ends: 71 [2020-10-27 14:56:07,632 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 14:56:07,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:56:07,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 14:56:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-27 14:56:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 14:56:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2020-10-27 14:56:07,649 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2020-10-27 14:56:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:07,649 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2020-10-27 14:56:07,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:56:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2020-10-27 14:56:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 14:56:07,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:07,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:07,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:56:07,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:07,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:07,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1728009910, now seen corresponding path program 1 times [2020-10-27 14:56:07,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:07,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709948955] [2020-10-27 14:56:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:07,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:07,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:07,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:56:08,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:08,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-10-27 14:56:08,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:56:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:08,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:56:08,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:08,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:08,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:08,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:08,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:08,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:08,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:08,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:08,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:08,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709948955] [2020-10-27 14:56:08,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:08,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:56:08,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037892951] [2020-10-27 14:56:08,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:56:08,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:08,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:56:08,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:56:08,411 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 10 states. [2020-10-27 14:56:09,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:09,278 INFO L93 Difference]: Finished difference Result 87 states and 117 transitions. [2020-10-27 14:56:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:56:09,279 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2020-10-27 14:56:09,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:09,281 INFO L225 Difference]: With dead ends: 87 [2020-10-27 14:56:09,281 INFO L226 Difference]: Without dead ends: 84 [2020-10-27 14:56:09,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:56:09,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-27 14:56:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 50. [2020-10-27 14:56:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 14:56:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-10-27 14:56:09,296 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 30 [2020-10-27 14:56:09,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:09,297 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-10-27 14:56:09,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:56:09,297 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-10-27 14:56:09,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-27 14:56:09,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:09,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:09,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:56:09,299 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:09,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:09,300 INFO L82 PathProgramCache]: Analyzing trace with hash -448146232, now seen corresponding path program 1 times [2020-10-27 14:56:09,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:09,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731179984] [2020-10-27 14:56:09,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:09,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:09,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:09,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 14:56:09,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:09,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-27 14:56:09,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:56:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:09,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:56:09,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:09,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:09,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:09,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:09,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:09,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:09,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:09,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:09,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:09,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:09,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:09,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:09,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:09,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:09,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:09,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:09,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:56:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:09,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731179984] [2020-10-27 14:56:09,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:09,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:56:09,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820220491] [2020-10-27 14:56:09,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:56:09,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:09,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:56:09,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:56:09,898 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 8 states. [2020-10-27 14:56:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:10,564 INFO L93 Difference]: Finished difference Result 108 states and 150 transitions. [2020-10-27 14:56:10,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:56:10,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-27 14:56:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:10,567 INFO L225 Difference]: With dead ends: 108 [2020-10-27 14:56:10,567 INFO L226 Difference]: Without dead ends: 91 [2020-10-27 14:56:10,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:56:10,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-27 14:56:10,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 61. [2020-10-27 14:56:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:56:10,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2020-10-27 14:56:10,584 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 30 [2020-10-27 14:56:10,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:10,584 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2020-10-27 14:56:10,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:56:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2020-10-27 14:56:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:56:10,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:10,586 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:10,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:56:10,586 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:10,587 INFO L82 PathProgramCache]: Analyzing trace with hash 615403056, now seen corresponding path program 1 times [2020-10-27 14:56:10,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:10,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662143784] [2020-10-27 14:56:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:10,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:56:10,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:56:10,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-27 14:56:10,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:56:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:56:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:10,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:10,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:10,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:10,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:10,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:10,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:10,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:10,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:10,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:10,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:10,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662143784] [2020-10-27 14:56:10,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:10,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:10,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067178381] [2020-10-27 14:56:10,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:10,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:10,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:10,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:10,950 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand 4 states. [2020-10-27 14:56:11,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:11,222 INFO L93 Difference]: Finished difference Result 92 states and 123 transitions. [2020-10-27 14:56:11,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:11,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-27 14:56:11,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:11,225 INFO L225 Difference]: With dead ends: 92 [2020-10-27 14:56:11,225 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:56:11,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:11,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:56:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-10-27 14:56:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-27 14:56:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2020-10-27 14:56:11,238 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 37 [2020-10-27 14:56:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:11,239 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2020-10-27 14:56:11,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2020-10-27 14:56:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 14:56:11,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:11,241 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:11,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:56:11,241 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash -883315340, now seen corresponding path program 2 times [2020-10-27 14:56:11,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:11,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052107911] [2020-10-27 14:56:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 14:56:11,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:56:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-27 14:56:11,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:56:11,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:56:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:11,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:11,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:11,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:11,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:11,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:11,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:11,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:11,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:11,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:11,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:11,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:11,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:11,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052107911] [2020-10-27 14:56:11,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:11,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:11,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033061702] [2020-10-27 14:56:11,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:11,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:11,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:11,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:11,688 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand 4 states. [2020-10-27 14:56:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:11,925 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-10-27 14:56:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:11,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-27 14:56:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:11,928 INFO L225 Difference]: With dead ends: 84 [2020-10-27 14:56:11,928 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 14:56:11,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 14:56:11,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-10-27 14:56:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 14:56:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2020-10-27 14:56:11,940 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 37 [2020-10-27 14:56:11,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:11,940 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2020-10-27 14:56:11,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2020-10-27 14:56:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 14:56:11,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:11,942 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:11,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:56:11,945 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:11,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:11,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1589429234, now seen corresponding path program 1 times [2020-10-27 14:56:11,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:11,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51105870] [2020-10-27 14:56:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:56:12,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:12,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-27 14:56:12,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:56:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 14:56:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:12,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:56:12,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:12,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:12,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:12,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:12,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:12,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:12,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:12,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:12,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:12,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:12,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:12,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51105870] [2020-10-27 14:56:12,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:12,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:56:12,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361422766] [2020-10-27 14:56:12,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:56:12,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:12,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:56:12,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:56:12,886 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand 9 states. [2020-10-27 14:56:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:13,703 INFO L93 Difference]: Finished difference Result 171 states and 246 transitions. [2020-10-27 14:56:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:56:13,704 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-27 14:56:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:13,706 INFO L225 Difference]: With dead ends: 171 [2020-10-27 14:56:13,706 INFO L226 Difference]: Without dead ends: 154 [2020-10-27 14:56:13,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:56:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-27 14:56:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 76. [2020-10-27 14:56:13,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-27 14:56:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 101 transitions. [2020-10-27 14:56:13,732 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 101 transitions. Word has length 39 [2020-10-27 14:56:13,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:13,733 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 101 transitions. [2020-10-27 14:56:13,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:56:13,733 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 101 transitions. [2020-10-27 14:56:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 14:56:13,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:13,743 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 14:56:13,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:56:13,743 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:13,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash 900099728, now seen corresponding path program 1 times [2020-10-27 14:56:13,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:13,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593150401] [2020-10-27 14:56:13,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:13,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:13,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:13,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:13,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:15,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:15,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-27 14:56:15,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 14:56:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2085 [2020-10-27 14:56:15,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:15,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:56:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 14:56:15,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:16,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:16,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:16,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:16,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:16,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 14:56:16,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:16,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:16,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:16,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:16,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:16,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:16,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:16,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:16,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:16,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:16,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:16,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:16,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:16,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:16,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:16,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:56:16,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593150401] [2020-10-27 14:56:16,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:16,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:56:16,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062735516] [2020-10-27 14:56:16,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:56:16,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:16,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:56:16,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:56:16,175 INFO L87 Difference]: Start difference. First operand 76 states and 101 transitions. Second operand 11 states. [2020-10-27 14:56:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:17,530 INFO L93 Difference]: Finished difference Result 191 states and 277 transitions. [2020-10-27 14:56:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:56:17,535 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-27 14:56:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:17,537 INFO L225 Difference]: With dead ends: 191 [2020-10-27 14:56:17,538 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 14:56:17,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:56:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 14:56:17,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 108. [2020-10-27 14:56:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:56:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 148 transitions. [2020-10-27 14:56:17,565 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 148 transitions. Word has length 39 [2020-10-27 14:56:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:17,565 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 148 transitions. [2020-10-27 14:56:17,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:56:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 148 transitions. [2020-10-27 14:56:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:56:17,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:17,567 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:17,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:56:17,567 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:17,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:17,568 INFO L82 PathProgramCache]: Analyzing trace with hash -82834904, now seen corresponding path program 1 times [2020-10-27 14:56:17,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:17,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140257210] [2020-10-27 14:56:17,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:17,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:56:18,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:56:18,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-27 14:56:18,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:56:18,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:56:18,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:18,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:18,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:18,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:18,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:18,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:18,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:56:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:18,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:18,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:18,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:18,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:18,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:18,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:56:18,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140257210] [2020-10-27 14:56:18,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:18,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:18,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367625181] [2020-10-27 14:56:18,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:18,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:18,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:18,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:18,761 INFO L87 Difference]: Start difference. First operand 108 states and 148 transitions. Second operand 4 states. [2020-10-27 14:56:18,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:18,965 INFO L93 Difference]: Finished difference Result 151 states and 206 transitions. [2020-10-27 14:56:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:18,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-27 14:56:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:18,968 INFO L225 Difference]: With dead ends: 151 [2020-10-27 14:56:18,968 INFO L226 Difference]: Without dead ends: 114 [2020-10-27 14:56:18,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:18,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-27 14:56:18,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2020-10-27 14:56:18,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-27 14:56:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2020-10-27 14:56:18,985 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 46 [2020-10-27 14:56:18,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:18,986 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2020-10-27 14:56:18,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:18,986 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2020-10-27 14:56:18,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-27 14:56:18,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:18,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:18,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:56:18,987 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:18,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1745235684, now seen corresponding path program 2 times [2020-10-27 14:56:18,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:18,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712811333] [2020-10-27 14:56:18,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:19,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 14:56:19,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:56:19,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-27 14:56:19,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:19,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-27 14:56:19,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:56:19,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:19,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:19,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:19,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:19,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:19,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:19,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:19,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:19,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:19,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:19,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:19,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:19,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:19,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:56:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:19,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:19,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:19,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:19,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:19,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:19,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:19,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:56:19,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712811333] [2020-10-27 14:56:19,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:19,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:19,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144404142] [2020-10-27 14:56:19,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:19,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:19,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:19,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:19,946 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand 4 states. [2020-10-27 14:56:20,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:20,145 INFO L93 Difference]: Finished difference Result 133 states and 173 transitions. [2020-10-27 14:56:20,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:20,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-27 14:56:20,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:20,147 INFO L225 Difference]: With dead ends: 133 [2020-10-27 14:56:20,147 INFO L226 Difference]: Without dead ends: 96 [2020-10-27 14:56:20,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-27 14:56:20,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-10-27 14:56:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 14:56:20,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 115 transitions. [2020-10-27 14:56:20,161 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 115 transitions. Word has length 46 [2020-10-27 14:56:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:20,162 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 115 transitions. [2020-10-27 14:56:20,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 115 transitions. [2020-10-27 14:56:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 14:56:20,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:20,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-27 14:56:20,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:56:20,163 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:20,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:20,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1375762998, now seen corresponding path program 2 times [2020-10-27 14:56:20,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:20,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363076517] [2020-10-27 14:56:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:20,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:20,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:56:20,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-27 14:56:20,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:56:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:56:20,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:20,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:20,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:20,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:20,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:20,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:20,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:20,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:20,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:20,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:20,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:20,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:20,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:20,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:20,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:20,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:20,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:20,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:20,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:20,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:20,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:20,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:56:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:20,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:20,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:20,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:20,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:56:21,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363076517] [2020-10-27 14:56:21,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:21,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:56:21,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445179143] [2020-10-27 14:56:21,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:56:21,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:21,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:56:21,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:56:21,007 INFO L87 Difference]: Start difference. First operand 90 states and 115 transitions. Second operand 10 states. [2020-10-27 14:56:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:22,539 INFO L93 Difference]: Finished difference Result 339 states and 477 transitions. [2020-10-27 14:56:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:56:22,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-27 14:56:22,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:22,545 INFO L225 Difference]: With dead ends: 339 [2020-10-27 14:56:22,548 INFO L226 Difference]: Without dead ends: 322 [2020-10-27 14:56:22,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:56:22,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-27 14:56:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 139. [2020-10-27 14:56:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 14:56:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2020-10-27 14:56:22,590 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 48 [2020-10-27 14:56:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:22,590 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2020-10-27 14:56:22,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:56:22,591 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2020-10-27 14:56:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 14:56:22,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:22,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-27 14:56:22,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:56:22,592 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:22,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:22,593 INFO L82 PathProgramCache]: Analyzing trace with hash -674163124, now seen corresponding path program 1 times [2020-10-27 14:56:22,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:22,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399684118] [2020-10-27 14:56:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:22,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:23,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:23,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:25,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:56:25,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:56:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2530 [2020-10-27 14:56:25,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:56:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:25,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 14:56:25,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:25,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:25,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:25,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:25,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:56:25,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:25,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:25,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:25,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:25,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:25,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:25,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:25,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:25,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:25,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:25,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:25,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:25,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:25,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:56:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:25,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:25,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:25,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:56:25,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399684118] [2020-10-27 14:56:25,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:25,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:56:25,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120826247] [2020-10-27 14:56:25,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:56:25,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:25,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:56:25,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:56:25,599 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand 13 states. [2020-10-27 14:56:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:27,056 INFO L93 Difference]: Finished difference Result 255 states and 352 transitions. [2020-10-27 14:56:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:56:27,057 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-27 14:56:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:27,060 INFO L225 Difference]: With dead ends: 255 [2020-10-27 14:56:27,061 INFO L226 Difference]: Without dead ends: 238 [2020-10-27 14:56:27,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:56:27,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-27 14:56:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-10-27 14:56:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-27 14:56:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 220 transitions. [2020-10-27 14:56:27,094 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 220 transitions. Word has length 48 [2020-10-27 14:56:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:27,095 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 220 transitions. [2020-10-27 14:56:27,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:56:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 220 transitions. [2020-10-27 14:56:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 14:56:27,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:27,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-27 14:56:27,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:56:27,098 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:27,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:27,098 INFO L82 PathProgramCache]: Analyzing trace with hash -808176630, now seen corresponding path program 2 times [2020-10-27 14:56:27,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:27,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857373421] [2020-10-27 14:56:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:27,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:27,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-27 14:56:27,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:56:27,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-10-27 14:56:27,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:56:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:27,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 14:56:27,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:28,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:28,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:28,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:28,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:28,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:28,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:28,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:28,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:28,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:28,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:28,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:28,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:28,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:28,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:28,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:28,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:56:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:28,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:28,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:28,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:28,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:28,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:56:28,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:28,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:28,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:28,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 14:56:28,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857373421] [2020-10-27 14:56:28,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:28,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:56:28,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110204220] [2020-10-27 14:56:28,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:56:28,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:28,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:56:28,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:56:28,206 INFO L87 Difference]: Start difference. First operand 161 states and 220 transitions. Second operand 12 states. [2020-10-27 14:56:29,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:29,664 INFO L93 Difference]: Finished difference Result 306 states and 425 transitions. [2020-10-27 14:56:29,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:56:29,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-27 14:56:29,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:29,669 INFO L225 Difference]: With dead ends: 306 [2020-10-27 14:56:29,673 INFO L226 Difference]: Without dead ends: 303 [2020-10-27 14:56:29,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:56:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-27 14:56:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 214. [2020-10-27 14:56:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-27 14:56:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 294 transitions. [2020-10-27 14:56:29,718 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 294 transitions. Word has length 48 [2020-10-27 14:56:29,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:29,718 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 294 transitions. [2020-10-27 14:56:29,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:56:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 294 transitions. [2020-10-27 14:56:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 14:56:29,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:29,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:29,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:56:29,720 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:29,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:29,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1683946060, now seen corresponding path program 1 times [2020-10-27 14:56:29,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:29,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026508340] [2020-10-27 14:56:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:29,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:29,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:30,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:31,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:56:31,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 14:56:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1673 [2020-10-27 14:56:31,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:56:31,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:56:31,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:31,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:31,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:31,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:31,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:31,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:31,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:31,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:31,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:31,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:31,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:31,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:56:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:31,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:31,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:31,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:31,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:31,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:31,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:31,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:31,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:56:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:31,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:31,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:31,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:31,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:31,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:31,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:56:31,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026508340] [2020-10-27 14:56:31,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:31,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:31,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900248716] [2020-10-27 14:56:31,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:31,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:31,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:31,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:31,521 INFO L87 Difference]: Start difference. First operand 214 states and 294 transitions. Second operand 4 states. [2020-10-27 14:56:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:31,744 INFO L93 Difference]: Finished difference Result 314 states and 425 transitions. [2020-10-27 14:56:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:31,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-27 14:56:31,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:31,748 INFO L225 Difference]: With dead ends: 314 [2020-10-27 14:56:31,748 INFO L226 Difference]: Without dead ends: 236 [2020-10-27 14:56:31,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-27 14:56:31,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 214. [2020-10-27 14:56:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-27 14:56:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 286 transitions. [2020-10-27 14:56:31,781 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 286 transitions. Word has length 55 [2020-10-27 14:56:31,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:31,781 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 286 transitions. [2020-10-27 14:56:31,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 286 transitions. [2020-10-27 14:56:31,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 14:56:31,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:31,783 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:31,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:56:31,783 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:31,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:31,784 INFO L82 PathProgramCache]: Analyzing trace with hash 880062064, now seen corresponding path program 2 times [2020-10-27 14:56:31,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:31,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77556587] [2020-10-27 14:56:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:31,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:32,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 14:56:33,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 14:56:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1241 [2020-10-27 14:56:33,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 14:56:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:56:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:33,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:33,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:33,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:33,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:56:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:33,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:33,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:33,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:33,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:56:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:33,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:33,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 14:56:33,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77556587] [2020-10-27 14:56:33,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:33,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:33,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810271251] [2020-10-27 14:56:33,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:33,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:33,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:33,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:33,155 INFO L87 Difference]: Start difference. First operand 214 states and 286 transitions. Second operand 4 states. [2020-10-27 14:56:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:33,388 INFO L93 Difference]: Finished difference Result 268 states and 348 transitions. [2020-10-27 14:56:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:33,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-27 14:56:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:33,394 INFO L225 Difference]: With dead ends: 268 [2020-10-27 14:56:33,394 INFO L226 Difference]: Without dead ends: 190 [2020-10-27 14:56:33,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:33,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-27 14:56:33,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 168. [2020-10-27 14:56:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-27 14:56:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 217 transitions. [2020-10-27 14:56:33,437 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 217 transitions. Word has length 55 [2020-10-27 14:56:33,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:33,437 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 217 transitions. [2020-10-27 14:56:33,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 217 transitions. [2020-10-27 14:56:33,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:56:33,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:33,439 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:33,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:56:33,440 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:33,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:33,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1946914930, now seen corresponding path program 3 times [2020-10-27 14:56:33,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:33,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129319785] [2020-10-27 14:56:33,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:33,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:33,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:34,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:34,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:56:34,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:34,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-10-27 14:56:34,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:56:34,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:34,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 14:56:34,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:34,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:34,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:34,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:34,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:34,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:34,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:34,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:34,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:34,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:34,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:34,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:34,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:34,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:34,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:34,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:34,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:34,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:34,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:34,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:34,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:34,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:34,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:34,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:34,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:34,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:56:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:34,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:34,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:34,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:34,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:34,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:34,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:34,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:34,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:34,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:34,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:56:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:34,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:34,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:34,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:34,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:34,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:34,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:56:34,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129319785] [2020-10-27 14:56:34,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:34,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:56:34,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041194753] [2020-10-27 14:56:34,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:56:34,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:34,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:56:34,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:56:34,307 INFO L87 Difference]: Start difference. First operand 168 states and 217 transitions. Second operand 11 states. [2020-10-27 14:56:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:36,645 INFO L93 Difference]: Finished difference Result 671 states and 893 transitions. [2020-10-27 14:56:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:56:36,646 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-27 14:56:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:36,650 INFO L225 Difference]: With dead ends: 671 [2020-10-27 14:56:36,651 INFO L226 Difference]: Without dead ends: 654 [2020-10-27 14:56:36,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=1210, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:56:36,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-10-27 14:56:36,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 278. [2020-10-27 14:56:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-27 14:56:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 370 transitions. [2020-10-27 14:56:36,691 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 370 transitions. Word has length 57 [2020-10-27 14:56:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:36,692 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 370 transitions. [2020-10-27 14:56:36,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:56:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 370 transitions. [2020-10-27 14:56:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:56:36,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:36,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:36,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:56:36,694 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:36,695 INFO L82 PathProgramCache]: Analyzing trace with hash 502685200, now seen corresponding path program 1 times [2020-10-27 14:56:36,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:36,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540238259] [2020-10-27 14:56:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:37,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:38,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:38,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:56:38,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:56:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2175 [2020-10-27 14:56:38,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:56:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:38,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 14:56:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:39,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:39,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:39,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:39,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:39,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:39,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:39,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:39,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:39,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:39,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:39,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:39,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:39,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:39,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:39,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:39,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:39,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:39,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:39,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:39,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:39,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:56:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:56:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:39,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:56:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:39,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:39,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:39,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:39,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:39,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:39,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:39,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:39,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:56:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:39,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:39,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:39,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:39,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:39,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:39,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:39,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 14:56:39,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540238259] [2020-10-27 14:56:39,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:39,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:56:39,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760148705] [2020-10-27 14:56:39,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:56:39,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:39,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:56:39,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:56:39,330 INFO L87 Difference]: Start difference. First operand 278 states and 370 transitions. Second operand 16 states. [2020-10-27 14:56:43,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:43,791 INFO L93 Difference]: Finished difference Result 718 states and 964 transitions. [2020-10-27 14:56:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-27 14:56:43,792 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-27 14:56:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:43,798 INFO L225 Difference]: With dead ends: 718 [2020-10-27 14:56:43,798 INFO L226 Difference]: Without dead ends: 701 [2020-10-27 14:56:43,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=593, Invalid=4237, Unknown=0, NotChecked=0, Total=4830 [2020-10-27 14:56:43,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-10-27 14:56:43,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 306. [2020-10-27 14:56:43,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2020-10-27 14:56:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 414 transitions. [2020-10-27 14:56:43,846 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 414 transitions. Word has length 57 [2020-10-27 14:56:43,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:43,847 INFO L481 AbstractCegarLoop]: Abstraction has 306 states and 414 transitions. [2020-10-27 14:56:43,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:56:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 414 transitions. [2020-10-27 14:56:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:56:43,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:43,849 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-27 14:56:43,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:56:43,849 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:43,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:43,850 INFO L82 PathProgramCache]: Analyzing trace with hash 430298642, now seen corresponding path program 2 times [2020-10-27 14:56:43,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:43,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491070860] [2020-10-27 14:56:43,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:44,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:44,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 14:56:44,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:56:44,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-27 14:56:44,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:56:44,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:44,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 14:56:44,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:44,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:44,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:44,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:44,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:44,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:44,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:44,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:44,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:44,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:44,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:44,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:44,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:44,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:44,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:44,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:44,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:44,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:44,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:44,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:44,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:44,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:44,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:44,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:44,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:56:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:44,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:44,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:44,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:44,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:44,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:56:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:44,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:44,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:44,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:44,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:44,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:44,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:44,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:44,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:44,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 14:56:44,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491070860] [2020-10-27 14:56:44,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:44,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:56:44,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793240305] [2020-10-27 14:56:44,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:56:44,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:44,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:56:44,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:56:44,518 INFO L87 Difference]: Start difference. First operand 306 states and 414 transitions. Second operand 13 states. [2020-10-27 14:56:48,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:48,349 INFO L93 Difference]: Finished difference Result 839 states and 1125 transitions. [2020-10-27 14:56:48,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 14:56:48,350 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-27 14:56:48,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:48,355 INFO L225 Difference]: With dead ends: 839 [2020-10-27 14:56:48,355 INFO L226 Difference]: Without dead ends: 836 [2020-10-27 14:56:48,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=286, Invalid=1520, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:56:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2020-10-27 14:56:48,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 437. [2020-10-27 14:56:48,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-27 14:56:48,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 595 transitions. [2020-10-27 14:56:48,419 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 595 transitions. Word has length 57 [2020-10-27 14:56:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:48,419 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 595 transitions. [2020-10-27 14:56:48,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:56:48,419 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 595 transitions. [2020-10-27 14:56:48,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:56:48,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:48,422 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 14:56:48,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:56:48,422 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:48,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:48,422 INFO L82 PathProgramCache]: Analyzing trace with hash 24724392, now seen corresponding path program 1 times [2020-10-27 14:56:48,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:48,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988266699] [2020-10-27 14:56:48,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:48,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 14:56:48,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:56:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-27 14:56:48,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 14:56:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:56:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:48,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:48,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:48,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:48,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:48,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:48,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:48,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:56:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:48,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:48,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:56:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:48,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:56:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:48,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:48,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:48,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:48,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:56:48,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988266699] [2020-10-27 14:56:48,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:48,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:48,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982602676] [2020-10-27 14:56:48,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:48,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:48,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:48,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:48,954 INFO L87 Difference]: Start difference. First operand 437 states and 595 transitions. Second operand 4 states. [2020-10-27 14:56:49,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:49,195 INFO L93 Difference]: Finished difference Result 610 states and 819 transitions. [2020-10-27 14:56:49,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:49,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-27 14:56:49,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:49,201 INFO L225 Difference]: With dead ends: 610 [2020-10-27 14:56:49,201 INFO L226 Difference]: Without dead ends: 464 [2020-10-27 14:56:49,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:49,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-27 14:56:49,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 437. [2020-10-27 14:56:49,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-27 14:56:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 579 transitions. [2020-10-27 14:56:49,266 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 579 transitions. Word has length 64 [2020-10-27 14:56:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:49,266 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 579 transitions. [2020-10-27 14:56:49,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:49,266 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 579 transitions. [2020-10-27 14:56:49,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-27 14:56:49,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:49,270 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 14:56:49,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:56:49,270 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:49,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:49,270 INFO L82 PathProgramCache]: Analyzing trace with hash -496603036, now seen corresponding path program 2 times [2020-10-27 14:56:49,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:49,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440625855] [2020-10-27 14:56:49,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 14:56:49,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:56:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-27 14:56:49,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-27 14:56:49,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:56:49,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:49,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:49,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:49,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:56:49,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:49,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:56:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:56:49,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:49,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:56:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:49,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:49,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:49,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:49,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:56:49,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:56:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:49,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:49,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:49,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:49,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:49,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:56:49,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:49,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-27 14:56:49,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440625855] [2020-10-27 14:56:49,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:56:49,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:56:49,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747043937] [2020-10-27 14:56:49,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:56:49,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:49,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:56:49,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:49,822 INFO L87 Difference]: Start difference. First operand 437 states and 579 transitions. Second operand 4 states. [2020-10-27 14:56:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:50,155 INFO L93 Difference]: Finished difference Result 505 states and 656 transitions. [2020-10-27 14:56:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:56:50,157 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-27 14:56:50,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:50,160 INFO L225 Difference]: With dead ends: 505 [2020-10-27 14:56:50,160 INFO L226 Difference]: Without dead ends: 359 [2020-10-27 14:56:50,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:56:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-27 14:56:50,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 332. [2020-10-27 14:56:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-27 14:56:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 432 transitions. [2020-10-27 14:56:50,221 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 432 transitions. Word has length 64 [2020-10-27 14:56:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:50,222 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 432 transitions. [2020-10-27 14:56:50,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:56:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 432 transitions. [2020-10-27 14:56:50,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 14:56:50,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:50,224 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:50,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:56:50,224 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:50,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:50,224 INFO L82 PathProgramCache]: Analyzing trace with hash 11551306, now seen corresponding path program 4 times [2020-10-27 14:56:50,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:50,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43141214] [2020-10-27 14:56:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:50,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:50,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 14:56:50,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:56:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-27 14:56:50,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:56:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 14:56:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:50,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:50,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:50,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:50,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:50,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:50,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:50,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:50,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:50,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:50,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:50,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:50,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:50,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:51,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:51,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:51,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:51,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:51,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:51,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:51,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:56:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:51,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:51,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:51,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:51,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:51,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:51,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:51,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:51,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:56:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:51,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:51,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:51,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:51,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:51,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:51,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:51,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:51,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:51,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:56:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:51,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:51,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:51,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:51,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:51,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:56:51,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43141214] [2020-10-27 14:56:51,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:51,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:56:51,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333935439] [2020-10-27 14:56:51,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:56:51,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:51,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:56:51,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:56:51,060 INFO L87 Difference]: Start difference. First operand 332 states and 432 transitions. Second operand 11 states. [2020-10-27 14:56:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:56:53,872 INFO L93 Difference]: Finished difference Result 983 states and 1248 transitions. [2020-10-27 14:56:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-27 14:56:53,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-10-27 14:56:53,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:56:53,882 INFO L225 Difference]: With dead ends: 983 [2020-10-27 14:56:53,882 INFO L226 Difference]: Without dead ends: 966 [2020-10-27 14:56:53,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=303, Invalid=1589, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 14:56:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2020-10-27 14:56:53,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 585. [2020-10-27 14:56:53,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-27 14:56:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 767 transitions. [2020-10-27 14:56:53,973 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 767 transitions. Word has length 66 [2020-10-27 14:56:53,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:56:53,973 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 767 transitions. [2020-10-27 14:56:53,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:56:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 767 transitions. [2020-10-27 14:56:53,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 14:56:53,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:56:53,977 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:56:53,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:56:53,977 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:56:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:56:53,978 INFO L82 PathProgramCache]: Analyzing trace with hash -341537076, now seen corresponding path program 1 times [2020-10-27 14:56:53,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:56:53,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160534496] [2020-10-27 14:56:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:56:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:54,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:54,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:55,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:56,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:56,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 14:56:56,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:56:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2987 [2020-10-27 14:56:56,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:56:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:56:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 14:56:56,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:57,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:56:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:57,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:57,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:56:57,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:56:57,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:56:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:57,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:57,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:57,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:57,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:57,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:56:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:56:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:56:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:57,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:57,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:57,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:57,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:57,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:57,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:57,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:57,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:57,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:56:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:57,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:57,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:57,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:56:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:57,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:57,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:57,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:56:57,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:57,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:56:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:56:57,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:56:57,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:56:57,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:56:57,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:56:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:56:57,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:56:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:56:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:56:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:56:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:56:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 43 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 14:56:57,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160534496] [2020-10-27 14:56:57,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:56:57,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:56:57,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148534499] [2020-10-27 14:56:57,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:56:57,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:56:57,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:56:57,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:56:57,319 INFO L87 Difference]: Start difference. First operand 585 states and 767 transitions. Second operand 13 states. [2020-10-27 14:57:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:01,745 INFO L93 Difference]: Finished difference Result 1293 states and 1647 transitions. [2020-10-27 14:57:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-27 14:57:01,748 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-27 14:57:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:01,756 INFO L225 Difference]: With dead ends: 1293 [2020-10-27 14:57:01,756 INFO L226 Difference]: Without dead ends: 1290 [2020-10-27 14:57:01,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=322, Invalid=2030, Unknown=0, NotChecked=0, Total=2352 [2020-10-27 14:57:01,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2020-10-27 14:57:01,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 852. [2020-10-27 14:57:01,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-10-27 14:57:01,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1124 transitions. [2020-10-27 14:57:01,885 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1124 transitions. Word has length 66 [2020-10-27 14:57:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:01,885 INFO L481 AbstractCegarLoop]: Abstraction has 852 states and 1124 transitions. [2020-10-27 14:57:01,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:57:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1124 transitions. [2020-10-27 14:57:01,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:57:01,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:01,889 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 14:57:01,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:57:01,890 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:01,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1741786060, now seen corresponding path program 1 times [2020-10-27 14:57:01,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:01,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306131705] [2020-10-27 14:57:01,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:01,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:01,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:57:02,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:57:02,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 14:57:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:57:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:57:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:02,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:02,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:02,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:02,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:57:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:02,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:02,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:02,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:57:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:02,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:02,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:57:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:02,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:02,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:02,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:02,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:57:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:02,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:02,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:02,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:02,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:57:02,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306131705] [2020-10-27 14:57:02,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:57:02,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:57:02,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578931942] [2020-10-27 14:57:02,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:57:02,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:02,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:57:02,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:57:02,273 INFO L87 Difference]: Start difference. First operand 852 states and 1124 transitions. Second operand 4 states. [2020-10-27 14:57:02,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:02,580 INFO L93 Difference]: Finished difference Result 1136 states and 1484 transitions. [2020-10-27 14:57:02,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:57:02,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-27 14:57:02,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:02,586 INFO L225 Difference]: With dead ends: 1136 [2020-10-27 14:57:02,586 INFO L226 Difference]: Without dead ends: 858 [2020-10-27 14:57:02,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:57:02,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-10-27 14:57:02,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 852. [2020-10-27 14:57:02,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-10-27 14:57:02,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1092 transitions. [2020-10-27 14:57:02,705 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1092 transitions. Word has length 73 [2020-10-27 14:57:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:02,706 INFO L481 AbstractCegarLoop]: Abstraction has 852 states and 1092 transitions. [2020-10-27 14:57:02,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:57:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1092 transitions. [2020-10-27 14:57:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:57:02,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:02,709 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2020-10-27 14:57:02,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:57:02,710 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:02,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:02,710 INFO L82 PathProgramCache]: Analyzing trace with hash -512678672, now seen corresponding path program 2 times [2020-10-27 14:57:02,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:02,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424978030] [2020-10-27 14:57:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 14:57:02,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:57:02,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 14:57:02,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 14:57:02,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:57:02,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:02,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:02,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:02,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:02,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:02,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:02,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:02,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:02,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:02,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:57:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:02,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:02,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:02,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:57:02,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:02,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:02,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:57:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:03,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:57:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:03,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:03,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:03,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:03,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:57:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:03,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:03,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:03,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:57:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 14:57:03,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424978030] [2020-10-27 14:57:03,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:57:03,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:57:03,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126678240] [2020-10-27 14:57:03,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:57:03,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:03,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:57:03,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:57:03,022 INFO L87 Difference]: Start difference. First operand 852 states and 1092 transitions. Second operand 4 states. [2020-10-27 14:57:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:03,292 INFO L93 Difference]: Finished difference Result 908 states and 1151 transitions. [2020-10-27 14:57:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:57:03,293 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-10-27 14:57:03,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:03,296 INFO L225 Difference]: With dead ends: 908 [2020-10-27 14:57:03,297 INFO L226 Difference]: Without dead ends: 630 [2020-10-27 14:57:03,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:57:03,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2020-10-27 14:57:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 624. [2020-10-27 14:57:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2020-10-27 14:57:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 791 transitions. [2020-10-27 14:57:03,383 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 791 transitions. Word has length 73 [2020-10-27 14:57:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:03,383 INFO L481 AbstractCegarLoop]: Abstraction has 624 states and 791 transitions. [2020-10-27 14:57:03,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:57:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 791 transitions. [2020-10-27 14:57:03,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 14:57:03,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:03,386 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:03,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:57:03,387 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:03,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:03,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1393541902, now seen corresponding path program 5 times [2020-10-27 14:57:03,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:03,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476255588] [2020-10-27 14:57:03,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:03,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:05,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 14:57:05,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:57:05,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1707 [2020-10-27 14:57:05,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:05,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:57:05,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 14:57:05,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 14:57:05,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:05,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:05,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:05,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:05,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:05,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:05,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:05,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:05,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:05,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:05,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:57:05,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:57:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:57:05,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 14:57:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:05,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:05,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:05,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:05,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:05,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:57:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:05,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:05,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:05,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:05,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:05,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:05,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:57:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:05,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:05,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:05,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:05,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:05,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:05,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:05,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:57:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:05,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:05,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:05,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:05,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:05,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:57:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:05,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:05,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:05,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:05,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:05,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:05,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:05,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:57:05,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476255588] [2020-10-27 14:57:05,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:05,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:57:05,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910513392] [2020-10-27 14:57:05,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:57:05,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:05,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:57:05,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:57:05,958 INFO L87 Difference]: Start difference. First operand 624 states and 791 transitions. Second operand 15 states. [2020-10-27 14:57:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:07,663 INFO L93 Difference]: Finished difference Result 1162 states and 1433 transitions. [2020-10-27 14:57:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:57:07,664 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 75 [2020-10-27 14:57:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:07,669 INFO L225 Difference]: With dead ends: 1162 [2020-10-27 14:57:07,670 INFO L226 Difference]: Without dead ends: 840 [2020-10-27 14:57:07,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:57:07,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2020-10-27 14:57:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 648. [2020-10-27 14:57:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-27 14:57:07,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 799 transitions. [2020-10-27 14:57:07,769 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 799 transitions. Word has length 75 [2020-10-27 14:57:07,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:07,770 INFO L481 AbstractCegarLoop]: Abstraction has 648 states and 799 transitions. [2020-10-27 14:57:07,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:57:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 799 transitions. [2020-10-27 14:57:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:57:07,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:07,773 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2020-10-27 14:57:07,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:57:07,774 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:07,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:07,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1599245658, now seen corresponding path program 6 times [2020-10-27 14:57:07,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:07,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330521501] [2020-10-27 14:57:07,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:07,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:08,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:57:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 14:57:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2316 [2020-10-27 14:57:10,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:57:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:57:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:10,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:10,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:10,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:10,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:57:10,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:10,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:10,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:10,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:10,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:10,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:57:10,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:57:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:10,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:10,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:10,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:10,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:57:10,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:57:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:10,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:57:10,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:10,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:57:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:10,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:10,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:10,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:10,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:10,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:10,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:10,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:10,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:10,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:57:10,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:10,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:10,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:10,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:10,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:57:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:10,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:10,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:10,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:10,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:10,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:57:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:10,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:10,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:10,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:10,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:10,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:10,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:10,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:10,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:10,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 15 proven. 81 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-27 14:57:10,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330521501] [2020-10-27 14:57:10,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:10,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:57:10,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827772846] [2020-10-27 14:57:10,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:57:10,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:10,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:57:10,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:57:10,851 INFO L87 Difference]: Start difference. First operand 648 states and 799 transitions. Second operand 19 states. [2020-10-27 14:57:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:13,860 INFO L93 Difference]: Finished difference Result 1021 states and 1255 transitions. [2020-10-27 14:57:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:57:13,861 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 82 [2020-10-27 14:57:13,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:13,867 INFO L225 Difference]: With dead ends: 1021 [2020-10-27 14:57:13,867 INFO L226 Difference]: Without dead ends: 1004 [2020-10-27 14:57:13,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:57:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-10-27 14:57:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 728. [2020-10-27 14:57:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-27 14:57:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 908 transitions. [2020-10-27 14:57:13,981 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 908 transitions. Word has length 82 [2020-10-27 14:57:13,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:13,981 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 908 transitions. [2020-10-27 14:57:13,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:57:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 908 transitions. [2020-10-27 14:57:13,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:57:13,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:13,985 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:57:13,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:57:13,985 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:13,986 INFO L82 PathProgramCache]: Analyzing trace with hash 667135528, now seen corresponding path program 7 times [2020-10-27 14:57:13,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:13,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403962372] [2020-10-27 14:57:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:14,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:14,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:14,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:14,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:14,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:14,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:14,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:57:14,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:57:14,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-27 14:57:14,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:57:14,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:14,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 14:57:14,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:15,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:15,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:15,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:57:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:15,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:57:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:15,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:57:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:15,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:57:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:15,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:57:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:15,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:15,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:15,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:15,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:15,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:15,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 10 proven. 74 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:57:15,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403962372] [2020-10-27 14:57:15,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:15,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:57:15,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509511478] [2020-10-27 14:57:15,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:57:15,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:15,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:57:15,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:57:15,120 INFO L87 Difference]: Start difference. First operand 728 states and 908 transitions. Second operand 16 states. [2020-10-27 14:57:26,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:26,554 INFO L93 Difference]: Finished difference Result 1527 states and 1818 transitions. [2020-10-27 14:57:26,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-10-27 14:57:26,555 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 82 [2020-10-27 14:57:26,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:26,563 INFO L225 Difference]: With dead ends: 1527 [2020-10-27 14:57:26,564 INFO L226 Difference]: Without dead ends: 1524 [2020-10-27 14:57:26,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5815 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1646, Invalid=13606, Unknown=0, NotChecked=0, Total=15252 [2020-10-27 14:57:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-10-27 14:57:26,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 887. [2020-10-27 14:57:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2020-10-27 14:57:26,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1113 transitions. [2020-10-27 14:57:26,746 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1113 transitions. Word has length 82 [2020-10-27 14:57:26,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:26,746 INFO L481 AbstractCegarLoop]: Abstraction has 887 states and 1113 transitions. [2020-10-27 14:57:26,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:57:26,747 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1113 transitions. [2020-10-27 14:57:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-27 14:57:26,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:26,751 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2020-10-27 14:57:26,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:57:26,751 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:26,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:26,752 INFO L82 PathProgramCache]: Analyzing trace with hash -584915866, now seen corresponding path program 1 times [2020-10-27 14:57:26,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:26,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403998188] [2020-10-27 14:57:26,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:26,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:27,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 14:57:27,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-27 14:57:27,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:57:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:27,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 14:57:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:27,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:27,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:27,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:27,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:27,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:27,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 14:57:27,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:27,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:27,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:27,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:27,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:27,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:27,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:27,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:27,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:27,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:27,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:57:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:27,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:27,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:27,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:27,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:57:27,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:57:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:27,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:27,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:27,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:27,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:57:27,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:27,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:27,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:27,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:57:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:27,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:27,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:27,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:27,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:27,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:27,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:27,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:27,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:57:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:27,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:27,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:27,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:27,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:57:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:27,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:27,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:27,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:27,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:27,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:27,628 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 15 proven. 69 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-27 14:57:27,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403998188] [2020-10-27 14:57:27,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:27,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:57:27,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219885016] [2020-10-27 14:57:27,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:57:27,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:27,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:57:27,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:57:27,632 INFO L87 Difference]: Start difference. First operand 887 states and 1113 transitions. Second operand 14 states. [2020-10-27 14:57:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:35,908 INFO L93 Difference]: Finished difference Result 1547 states and 1841 transitions. [2020-10-27 14:57:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-10-27 14:57:35,909 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 82 [2020-10-27 14:57:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:35,917 INFO L225 Difference]: With dead ends: 1547 [2020-10-27 14:57:35,917 INFO L226 Difference]: Without dead ends: 1530 [2020-10-27 14:57:35,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5630 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1627, Invalid=12415, Unknown=0, NotChecked=0, Total=14042 [2020-10-27 14:57:35,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2020-10-27 14:57:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 812. [2020-10-27 14:57:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-10-27 14:57:36,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1010 transitions. [2020-10-27 14:57:36,071 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1010 transitions. Word has length 82 [2020-10-27 14:57:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:36,072 INFO L481 AbstractCegarLoop]: Abstraction has 812 states and 1010 transitions. [2020-10-27 14:57:36,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:57:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1010 transitions. [2020-10-27 14:57:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 14:57:36,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:36,076 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 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] [2020-10-27 14:57:36,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:57:36,076 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:36,077 INFO L82 PathProgramCache]: Analyzing trace with hash -280151502, now seen corresponding path program 8 times [2020-10-27 14:57:36,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:36,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817062307] [2020-10-27 14:57:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:36,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:36,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:36,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 14:57:37,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:57:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1165 [2020-10-27 14:57:37,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:57:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:37,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 14:57:37,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:37,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:37,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:37,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:37,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:57:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:57:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:57:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:57:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:57:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:57:37,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:57:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:37,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:37,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:37,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:37,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:37,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 18 proven. 96 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 14:57:37,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817062307] [2020-10-27 14:57:37,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:37,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:57:37,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723274454] [2020-10-27 14:57:37,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:57:37,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:37,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:57:37,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:57:37,703 INFO L87 Difference]: Start difference. First operand 812 states and 1010 transitions. Second operand 15 states. [2020-10-27 14:57:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:57:48,858 INFO L93 Difference]: Finished difference Result 1651 states and 1977 transitions. [2020-10-27 14:57:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-10-27 14:57:48,860 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2020-10-27 14:57:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:57:48,867 INFO L225 Difference]: With dead ends: 1651 [2020-10-27 14:57:48,868 INFO L226 Difference]: Without dead ends: 1634 [2020-10-27 14:57:48,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10103 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2604, Invalid=21266, Unknown=0, NotChecked=0, Total=23870 [2020-10-27 14:57:48,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2020-10-27 14:57:49,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 962. [2020-10-27 14:57:49,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-27 14:57:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1217 transitions. [2020-10-27 14:57:49,066 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1217 transitions. Word has length 91 [2020-10-27 14:57:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:57:49,067 INFO L481 AbstractCegarLoop]: Abstraction has 962 states and 1217 transitions. [2020-10-27 14:57:49,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:57:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1217 transitions. [2020-10-27 14:57:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 14:57:49,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:57:49,072 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 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] [2020-10-27 14:57:49,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:57:49,072 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:57:49,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:57:49,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1887074190, now seen corresponding path program 2 times [2020-10-27 14:57:49,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:57:49,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300775237] [2020-10-27 14:57:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:57:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:49,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:50,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:50,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:50,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:54,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:54,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 14:57:54,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 14:57:54,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 14:57:54,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:57:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:57:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 14:57:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:54,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:57:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:54,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:54,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:54,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:57:54,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:54,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:54,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:54,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:54,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:54,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:54,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:57:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:54,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:54,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:54,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:54,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:54,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:57:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:54,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:57:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:54,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:57:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:54,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:54,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:54,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:54,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:54,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:54,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:54,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:54,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:54,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:57:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:54,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:54,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:54,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:54,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:54,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:54,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:57:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:54,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:54,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:54,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:54,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:54,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:54,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:57:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:54,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:54,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:54,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:54,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:54,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:54,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:54,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:54,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:57:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:54,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:54,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:54,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:54,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:54,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:54,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:54,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:54,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:54,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:54,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:54,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:57:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:57:54,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:57:54,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:57:54,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:57:54,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:57:54,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:57:54,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:57:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:57:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:57:54,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:57:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:57:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 12 proven. 102 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-27 14:57:54,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300775237] [2020-10-27 14:57:54,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:57:54,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:57:54,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602990043] [2020-10-27 14:57:54,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:57:54,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:57:54,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:57:54,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:57:54,637 INFO L87 Difference]: Start difference. First operand 962 states and 1217 transitions. Second operand 17 states. [2020-10-27 14:58:09,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:09,805 INFO L93 Difference]: Finished difference Result 1648 states and 1974 transitions. [2020-10-27 14:58:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-10-27 14:58:09,806 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 91 [2020-10-27 14:58:09,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:09,815 INFO L225 Difference]: With dead ends: 1648 [2020-10-27 14:58:09,815 INFO L226 Difference]: Without dead ends: 1645 [2020-10-27 14:58:09,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10254 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2623, Invalid=22817, Unknown=0, NotChecked=0, Total=25440 [2020-10-27 14:58:09,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-10-27 14:58:10,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 992. [2020-10-27 14:58:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-27 14:58:10,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1253 transitions. [2020-10-27 14:58:10,061 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1253 transitions. Word has length 91 [2020-10-27 14:58:10,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:10,062 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1253 transitions. [2020-10-27 14:58:10,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:58:10,062 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1253 transitions. [2020-10-27 14:58:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:58:10,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:10,067 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 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] [2020-10-27 14:58:10,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:58:10,067 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:10,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:10,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1386688550, now seen corresponding path program 9 times [2020-10-27 14:58:10,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:10,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017713674] [2020-10-27 14:58:10,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:10,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:10,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:58:11,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:58:11,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-10-27 14:58:11,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:58:11,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:11,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 14:58:11,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:11,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:11,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:11,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:11,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:11,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:11,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:11,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:58:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:11,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:11,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:11,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:58:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:11,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:11,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:11,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:58:11,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:11,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:58:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:11,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:11,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:58:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:11,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:11,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:11,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:11,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:11,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:11,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:58:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:11,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:11,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:11,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:11,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:11,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:11,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:58:11,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:11,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:11,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:11,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:11,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:11,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:11,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:11,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:58:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:11,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:11,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:11,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:11,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:11,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:11,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:11,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:11,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:11,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:11,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 21 proven. 128 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 14:58:11,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017713674] [2020-10-27 14:58:11,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:11,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:58:11,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933751308] [2020-10-27 14:58:11,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:58:11,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:11,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:58:11,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:58:11,729 INFO L87 Difference]: Start difference. First operand 992 states and 1253 transitions. Second operand 16 states. [2020-10-27 14:58:26,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:26,750 INFO L93 Difference]: Finished difference Result 1974 states and 2392 transitions. [2020-10-27 14:58:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2020-10-27 14:58:26,752 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-27 14:58:26,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:26,761 INFO L225 Difference]: With dead ends: 1974 [2020-10-27 14:58:26,761 INFO L226 Difference]: Without dead ends: 1957 [2020-10-27 14:58:26,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14316 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=3446, Invalid=29860, Unknown=0, NotChecked=0, Total=33306 [2020-10-27 14:58:26,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2020-10-27 14:58:27,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1216. [2020-10-27 14:58:27,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-27 14:58:27,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1556 transitions. [2020-10-27 14:58:27,059 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1556 transitions. Word has length 100 [2020-10-27 14:58:27,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:27,059 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1556 transitions. [2020-10-27 14:58:27,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:58:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1556 transitions. [2020-10-27 14:58:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:58:27,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:27,066 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 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] [2020-10-27 14:58:27,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:58:27,066 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:27,067 INFO L82 PathProgramCache]: Analyzing trace with hash 634207846, now seen corresponding path program 3 times [2020-10-27 14:58:27,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:27,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458182011] [2020-10-27 14:58:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:27,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:28,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:28,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:28,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:58:32,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-27 14:58:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:58:32,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:58:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 14:58:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:32,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:32,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:32,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:58:32,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:32,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:32,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:32,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:32,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:32,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:32,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:32,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:58:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:32,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:32,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:32,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:32,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:32,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:58:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:32,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:32,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:32,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 14:58:32,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:32,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:32,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:32,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:32,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:58:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:32,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:32,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:32,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:32,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:58:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:32,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:32,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:32,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:32,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:32,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:32,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:58:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:32,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:32,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:32,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:58:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:32,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:32,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:32,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:58:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:32,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:32,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:32,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:32,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:32,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:32,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:32,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:32,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:32,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 21 proven. 128 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 14:58:33,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458182011] [2020-10-27 14:58:33,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:33,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:58:33,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63698702] [2020-10-27 14:58:33,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:58:33,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:33,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:58:33,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:58:33,030 INFO L87 Difference]: Start difference. First operand 1216 states and 1556 transitions. Second operand 19 states. [2020-10-27 14:58:36,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:36,500 INFO L93 Difference]: Finished difference Result 1451 states and 1834 transitions. [2020-10-27 14:58:36,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:58:36,501 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-10-27 14:58:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:36,509 INFO L225 Difference]: With dead ends: 1451 [2020-10-27 14:58:36,510 INFO L226 Difference]: Without dead ends: 1434 [2020-10-27 14:58:36,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2020-10-27 14:58:36,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2020-10-27 14:58:36,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1142. [2020-10-27 14:58:36,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-10-27 14:58:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1460 transitions. [2020-10-27 14:58:36,724 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1460 transitions. Word has length 100 [2020-10-27 14:58:36,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:36,724 INFO L481 AbstractCegarLoop]: Abstraction has 1142 states and 1460 transitions. [2020-10-27 14:58:36,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:58:36,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1460 transitions. [2020-10-27 14:58:36,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:58:36,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:36,730 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:58:36,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:58:36,731 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:36,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:36,731 INFO L82 PathProgramCache]: Analyzing trace with hash 141581672, now seen corresponding path program 4 times [2020-10-27 14:58:36,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:36,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192903156] [2020-10-27 14:58:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:36,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:36,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:36,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:37,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:37,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:38,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:41,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:41,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:58:41,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:58:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:58:41,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:58:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:58:41,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:42,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:42,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:42,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:42,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:58:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:42,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:58:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:42,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:42,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:58:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:42,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:58:42,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:58:42,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:42,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-27 14:58:42,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:58:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:58:42,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:58:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:42,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:58:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:58:42,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:58:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:58:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:58:42,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:58:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:42,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:42,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:42,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:42,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:42,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:58:42,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:42,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 85 proven. 30 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-27 14:58:42,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192903156] [2020-10-27 14:58:42,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:42,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:58:42,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875899323] [2020-10-27 14:58:42,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:58:42,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:42,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:58:42,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:58:42,490 INFO L87 Difference]: Start difference. First operand 1142 states and 1460 transitions. Second operand 16 states. [2020-10-27 14:58:44,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:44,486 INFO L93 Difference]: Finished difference Result 1444 states and 1846 transitions. [2020-10-27 14:58:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:58:44,487 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 100 [2020-10-27 14:58:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:44,494 INFO L225 Difference]: With dead ends: 1444 [2020-10-27 14:58:44,494 INFO L226 Difference]: Without dead ends: 1322 [2020-10-27 14:58:44,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:58:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-10-27 14:58:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1134. [2020-10-27 14:58:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2020-10-27 14:58:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1436 transitions. [2020-10-27 14:58:44,787 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1436 transitions. Word has length 100 [2020-10-27 14:58:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:44,787 INFO L481 AbstractCegarLoop]: Abstraction has 1134 states and 1436 transitions. [2020-10-27 14:58:44,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:58:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1436 transitions. [2020-10-27 14:58:44,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:58:44,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:44,794 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 5, 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] [2020-10-27 14:58:44,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:58:44,794 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:44,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1887004438, now seen corresponding path program 5 times [2020-10-27 14:58:44,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:44,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703879796] [2020-10-27 14:58:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:44,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:44,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:44,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:46,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:47,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:48,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:49,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:49,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:58:49,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 14:58:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 14:58:49,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:58:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 14:58:49,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:50,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:50,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:50,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:50,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:50,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:50,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:50,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:50,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:50,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:50,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:50,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:50,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:50,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:50,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:50,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:50,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:58:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:50,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:50,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:50,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:50,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:58:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:58:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:58:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:50,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:50,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:50,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:50,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:50,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:50,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:58:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:50,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:50,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:50,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:50,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:50,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:50,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:58:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:50,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:50,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:50,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:58:50,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:50,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:50,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:58:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:50,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:50,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:50,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:50,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:58:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:50,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:50,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:50,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:50,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:50,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:58:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 14:58:50,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:50,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:58:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:50,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:50,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:50,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:50,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:50,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:50,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:58:50,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:50,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 83 proven. 91 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-10-27 14:58:50,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703879796] [2020-10-27 14:58:50,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:50,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:58:50,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90322102] [2020-10-27 14:58:50,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:58:50,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:50,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:58:50,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:58:50,547 INFO L87 Difference]: Start difference. First operand 1134 states and 1436 transitions. Second operand 19 states. [2020-10-27 14:58:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:58:53,756 INFO L93 Difference]: Finished difference Result 1562 states and 1932 transitions. [2020-10-27 14:58:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:58:53,757 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 100 [2020-10-27 14:58:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:58:53,766 INFO L225 Difference]: With dead ends: 1562 [2020-10-27 14:58:53,766 INFO L226 Difference]: Without dead ends: 1519 [2020-10-27 14:58:53,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 14:58:53,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2020-10-27 14:58:54,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1134. [2020-10-27 14:58:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2020-10-27 14:58:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1432 transitions. [2020-10-27 14:58:54,053 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1432 transitions. Word has length 100 [2020-10-27 14:58:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:58:54,054 INFO L481 AbstractCegarLoop]: Abstraction has 1134 states and 1432 transitions. [2020-10-27 14:58:54,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:58:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1432 transitions. [2020-10-27 14:58:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-27 14:58:54,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:58:54,059 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:58:54,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:58:54,060 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:58:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:58:54,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2021017944, now seen corresponding path program 6 times [2020-10-27 14:58:54,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:58:54,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814508155] [2020-10-27 14:58:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:58:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:54,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:55,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:55,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:55,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 14:58:55,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 14:58:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-10-27 14:58:55,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:58:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:58:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 14:58:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:58:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:56,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:58:56,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:58:56,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:58:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:56,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:56,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:56,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:56,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:58:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:56,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:58:56,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:58:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:56,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:56,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:56,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:56,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:56,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:56,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:56,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:58:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:56,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:56,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:56,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:58:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:56,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:56,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:56,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:56,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:56,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:56,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:58:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:56,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:56,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:56,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:58:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:56,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:56,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:56,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:56,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:56,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:56,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:58:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:56,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:56,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:56,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:56,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:58:56,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:56,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:56,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:56,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:56,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:58:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:58:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:58:56,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:58:56,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:58:56,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:58:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:58:56,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:58:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:58:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:58:56,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:58:56,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:58:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 14 proven. 135 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 14:58:56,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814508155] [2020-10-27 14:58:56,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:58:56,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:58:56,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258063881] [2020-10-27 14:58:56,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:58:56,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:58:56,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:58:56,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:58:56,386 INFO L87 Difference]: Start difference. First operand 1134 states and 1432 transitions. Second operand 18 states. [2020-10-27 14:59:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:17,732 INFO L93 Difference]: Finished difference Result 2054 states and 2483 transitions. [2020-10-27 14:59:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2020-10-27 14:59:17,734 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 100 [2020-10-27 14:59:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:17,744 INFO L225 Difference]: With dead ends: 2054 [2020-10-27 14:59:17,744 INFO L226 Difference]: Without dead ends: 2051 [2020-10-27 14:59:17,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14453 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=3465, Invalid=31691, Unknown=0, NotChecked=0, Total=35156 [2020-10-27 14:59:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2020-10-27 14:59:18,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1164. [2020-10-27 14:59:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2020-10-27 14:59:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1468 transitions. [2020-10-27 14:59:18,007 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1468 transitions. Word has length 100 [2020-10-27 14:59:18,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:18,007 INFO L481 AbstractCegarLoop]: Abstraction has 1164 states and 1468 transitions. [2020-10-27 14:59:18,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:59:18,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1468 transitions. [2020-10-27 14:59:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:59:18,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:18,013 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 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] [2020-10-27 14:59:18,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:59:18,014 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:18,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1028608846, now seen corresponding path program 10 times [2020-10-27 14:59:18,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:18,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106016891] [2020-10-27 14:59:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:18,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:18,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:18,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:18,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:18,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 14:59:18,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 14:59:18,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-27 14:59:18,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:59:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 14:59:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 14:59:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:59:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:59:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:59:19,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 14:59:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:19,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:19,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:59:19,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:59:19,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 14:59:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:19,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:19,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:59:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:19,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:19,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:19,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:59:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:19,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:19,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:19,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:59:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:19,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:19,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:19,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:59:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:19,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:19,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:19,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:59:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:19,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:19,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:59:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:19,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:19,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:19,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:59:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:19,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:59:19,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:59:19,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:59:19,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:59:19,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:59:19,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:59:19,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:59:19,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:59:19,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:59:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 24 proven. 165 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-27 14:59:19,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106016891] [2020-10-27 14:59:19,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:59:19,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:59:19,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965486381] [2020-10-27 14:59:19,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:59:19,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:59:19,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:59:19,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:59:19,329 INFO L87 Difference]: Start difference. First operand 1164 states and 1468 transitions. Second operand 17 states. [2020-10-27 14:59:37,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:59:37,324 INFO L93 Difference]: Finished difference Result 2066 states and 2499 transitions. [2020-10-27 14:59:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2020-10-27 14:59:37,326 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 109 [2020-10-27 14:59:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:59:37,348 INFO L225 Difference]: With dead ends: 2066 [2020-10-27 14:59:37,348 INFO L226 Difference]: Without dead ends: 2049 [2020-10-27 14:59:37,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14360 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=3321, Invalid=30719, Unknown=0, NotChecked=0, Total=34040 [2020-10-27 14:59:37,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2020-10-27 14:59:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1314. [2020-10-27 14:59:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1314 states. [2020-10-27 14:59:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1671 transitions. [2020-10-27 14:59:37,615 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1671 transitions. Word has length 109 [2020-10-27 14:59:37,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:59:37,615 INFO L481 AbstractCegarLoop]: Abstraction has 1314 states and 1671 transitions. [2020-10-27 14:59:37,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:59:37,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1671 transitions. [2020-10-27 14:59:37,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-27 14:59:37,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:59:37,621 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 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] [2020-10-27 14:59:37,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:59:37,621 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:59:37,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:59:37,622 INFO L82 PathProgramCache]: Analyzing trace with hash -553354510, now seen corresponding path program 3 times [2020-10-27 14:59:37,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:59:37,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205597710] [2020-10-27 14:59:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:59:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:59:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:37,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:59:38,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking...