/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/s4lif.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:57:38,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:57:38,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:57:38,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:57:38,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:57:38,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:57:38,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:57:39,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:57:39,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:57:39,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:57:39,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:57:39,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:57:39,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:57:39,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:57:39,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:57:39,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:57:39,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:57:39,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:57:39,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:57:39,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:57:39,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:57:39,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:57:39,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:57:39,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:57:39,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:57:39,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:57:39,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:57:39,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:57:39,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:57:39,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:57:39,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:57:39,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:57:39,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:57:39,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:57:39,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:57:39,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:57:39,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:57:39,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:57:39,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:57:39,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:57:39,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:57:39,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:57:39,170 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:57:39,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:57:39,176 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:57:39,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:57:39,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:57:39,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:57:39,178 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:57:39,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:57:39,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:57:39,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:57:39,179 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:57:39,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:57:39,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:57:39,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:57:39,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:57:39,181 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:57:39,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:57:39,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:57:39,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:57:39,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:57:39,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:57:39,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:57:39,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:57:39,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:57:39,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:57:39,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:57:39,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:57:39,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:57:39,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:57:39,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:57:39,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:57:39,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:57:39,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:57:39,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:57:39,735 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:57:39,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4lif.c [2020-10-29 03:57:39,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99d84feb7/862ddd33197c43d1901b8a4f111a7a7b/FLAG88f85fc4d [2020-10-29 03:57:40,510 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:57:40,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4lif.c [2020-10-29 03:57:40,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99d84feb7/862ddd33197c43d1901b8a4f111a7a7b/FLAG88f85fc4d [2020-10-29 03:57:40,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99d84feb7/862ddd33197c43d1901b8a4f111a7a7b [2020-10-29 03:57:40,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:57:40,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:57:40,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:57:40,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:57:40,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:57:40,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:57:40" (1/1) ... [2020-10-29 03:57:40,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@571e44c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:40, skipping insertion in model container [2020-10-29 03:57:40,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:57:40" (1/1) ... [2020-10-29 03:57:40,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:57:40,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:57:41,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:57:41,086 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:57:41,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:57:41,132 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:57:41,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41 WrapperNode [2020-10-29 03:57:41,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:57:41,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:57:41,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:57:41,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:57:41,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41" (1/1) ... [2020-10-29 03:57:41,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41" (1/1) ... [2020-10-29 03:57:41,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41" (1/1) ... [2020-10-29 03:57:41,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41" (1/1) ... [2020-10-29 03:57:41,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41" (1/1) ... [2020-10-29 03:57:41,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41" (1/1) ... [2020-10-29 03:57:41,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41" (1/1) ... [2020-10-29 03:57:41,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:57:41,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:57:41,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:57:41,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:57:41,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:57:41,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:57:41,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:57:41,283 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:57:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:57:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:57:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:57:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:57:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:57:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:57:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:57:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:57:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:57:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:57:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:57:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:57:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:57:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:57:41,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:57:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:57:41,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:57:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:57:41,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:57:41,806 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:57:41,807 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 03:57:41,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:57:41 BoogieIcfgContainer [2020-10-29 03:57:41,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:57:41,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:57:41,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:57:41,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:57:41,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:57:40" (1/3) ... [2020-10-29 03:57:41,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765cd224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:57:41, skipping insertion in model container [2020-10-29 03:57:41,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:57:41" (2/3) ... [2020-10-29 03:57:41,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765cd224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:57:41, skipping insertion in model container [2020-10-29 03:57:41,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:57:41" (3/3) ... [2020-10-29 03:57:41,820 INFO L111 eAbstractionObserver]: Analyzing ICFG s4lif.c [2020-10-29 03:57:41,834 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:57:41,840 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:57:41,857 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:57:41,892 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:57:41,892 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:57:41,893 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:57:41,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:57:41,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:57:41,893 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:57:41,893 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:57:41,893 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:57:41,914 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-29 03:57:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:57:41,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:41,923 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] [2020-10-29 03:57:41,923 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:41,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:41,932 INFO L82 PathProgramCache]: Analyzing trace with hash 371341983, now seen corresponding path program 1 times [2020-10-29 03:57:41,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:41,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787664955] [2020-10-29 03:57:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:42,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:42,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:43,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:43,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:57:43,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:57:43,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-10-29 03:57:43,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:43,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:57:43,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:57:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:57:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:57:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:43,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:43,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:57:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:43,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:43,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:43,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:57:43,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:43,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:43,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:43,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:43,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:43,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:57:43,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:57:43,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:43,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:43,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:57:43,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:43,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:57:43,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:57:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:57:43,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787664955] [2020-10-29 03:57:43,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:57:43,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:57:43,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584877634] [2020-10-29 03:57:43,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:57:43,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:43,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:57:43,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:57:43,457 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 5 states. [2020-10-29 03:57:43,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:43,717 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-10-29 03:57:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:57:43,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-29 03:57:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:43,728 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:57:43,729 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:57:43,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:57:43,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:57:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-10-29 03:57:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 03:57:43,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-29 03:57:43,786 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-10-29 03:57:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:43,786 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-29 03:57:43,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:57:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-29 03:57:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:57:43,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:43,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:43,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:57:43,789 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:43,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2090381425, now seen corresponding path program 1 times [2020-10-29 03:57:43,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:43,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393212703] [2020-10-29 03:57:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:43,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:43,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:44,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:45,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:47,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:47,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:57:47,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:57:47,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3707 [2020-10-29 03:57:47,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:47,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:57:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:47,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:57:47,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:57:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:47,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:47,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:47,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:47,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:57:47,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:47,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:47,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:47,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:47,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:47,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:47,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:47,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:47,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:57:47,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:47,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:47,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:47,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:47,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:47,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:47,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:57:47,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393212703] [2020-10-29 03:57:47,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:47,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:57:47,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049114080] [2020-10-29 03:57:47,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:57:47,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:47,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:57:47,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:57:47,963 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 14 states. [2020-10-29 03:57:48,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:48,552 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-10-29 03:57:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:57:48,552 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-10-29 03:57:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:48,556 INFO L225 Difference]: With dead ends: 53 [2020-10-29 03:57:48,556 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:57:48,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:57:48,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:57:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2020-10-29 03:57:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:57:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-29 03:57:48,570 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 31 [2020-10-29 03:57:48,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:48,571 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-29 03:57:48,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:57:48,571 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-29 03:57:48,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:57:48,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:48,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:48,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:57:48,574 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:48,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1617779857, now seen corresponding path program 1 times [2020-10-29 03:57:48,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:48,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112931212] [2020-10-29 03:57:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:48,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:49,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:50,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:50,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:57:50,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:57:50,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1552 [2020-10-29 03:57:50,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:50,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:57:50,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:57:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:50,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:50,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:50,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:50,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:50,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:57:50,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:50,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:57:50,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:50,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:50,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:50,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:50,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:50,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:57:50,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:50,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:50,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:50,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:50,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:50,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:57:50,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112931212] [2020-10-29 03:57:50,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:50,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:57:50,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434746113] [2020-10-29 03:57:50,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:57:50,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:50,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:57:50,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:57:50,384 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 11 states. [2020-10-29 03:57:50,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:50,841 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-29 03:57:50,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:57:50,842 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-29 03:57:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:50,844 INFO L225 Difference]: With dead ends: 73 [2020-10-29 03:57:50,844 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:57:50,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:57:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:57:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2020-10-29 03:57:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:57:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2020-10-29 03:57:50,867 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 31 [2020-10-29 03:57:50,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:50,868 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2020-10-29 03:57:50,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:57:50,868 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2020-10-29 03:57:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:57:50,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:50,872 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:57:50,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:57:50,873 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:50,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1912294515, now seen corresponding path program 2 times [2020-10-29 03:57:50,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:50,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996196838] [2020-10-29 03:57:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:50,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:51,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:51,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:57:51,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:57:51,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-29 03:57:51,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:51,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:51,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:57:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:57:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:51,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:51,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:51,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:51,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:51,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:51,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:57:51,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:51,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:51,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:51,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:51,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:51,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:51,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:51,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:57:51,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:51,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:51,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:57:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:57:51,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996196838] [2020-10-29 03:57:51,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:51,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:57:51,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907024742] [2020-10-29 03:57:51,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:57:51,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:51,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:57:51,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:57:51,884 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 8 states. [2020-10-29 03:57:52,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:52,194 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2020-10-29 03:57:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:57:52,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-29 03:57:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:52,196 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:57:52,197 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 03:57:52,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:57:52,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 03:57:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2020-10-29 03:57:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:57:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-10-29 03:57:52,208 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 33 [2020-10-29 03:57:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:52,209 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-10-29 03:57:52,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:57:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-10-29 03:57:52,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:57:52,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:52,210 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:57:52,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:57:52,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash 2047640497, now seen corresponding path program 3 times [2020-10-29 03:57:52,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:52,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295049581] [2020-10-29 03:57:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:52,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:54,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:54,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:57:54,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:57:54,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2063 [2020-10-29 03:57:54,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:54,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:57:54,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:54,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:57:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:57:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:57:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:54,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:54,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:57:54,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:54,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:57:54,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:54,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:54,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:54,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:57:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:57:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:54,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:54,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:54,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:57:54,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:57:54,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:57:54,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:54,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:54,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:57:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:57:54,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:57:54,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:57:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 03:57:54,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295049581] [2020-10-29 03:57:54,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:57:54,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:57:54,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424168831] [2020-10-29 03:57:54,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:57:54,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:57:54,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:57:54,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:57:54,451 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 8 states. [2020-10-29 03:57:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:57:54,722 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-10-29 03:57:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:57:54,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-29 03:57:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:57:54,724 INFO L225 Difference]: With dead ends: 59 [2020-10-29 03:57:54,725 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:57:54,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:57:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:57:54,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-10-29 03:57:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:57:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 03:57:54,741 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 33 [2020-10-29 03:57:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:57:54,743 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 03:57:54,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:57:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 03:57:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:57:54,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:57:54,747 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:57:54,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:57:54,748 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:57:54,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:57:54,749 INFO L82 PathProgramCache]: Analyzing trace with hash -283658706, now seen corresponding path program 4 times [2020-10-29 03:57:54,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:57:54,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115683879] [2020-10-29 03:57:54,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:57:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:57:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:55,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:55,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:56,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:57,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:57,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:59,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:57:59,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:57:59,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:57:59,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:57:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:57:59,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:57:59,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:57:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:57:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:57:59,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:57:59,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:00,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:00,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:00,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:00,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:00,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:58:00,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:00,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:00,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:00,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:00,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:00,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:00,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:00,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:00,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:58:00,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:00,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:00,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:00,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:00,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:00,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:58:00,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115683879] [2020-10-29 03:58:00,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:00,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:58:00,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637076491] [2020-10-29 03:58:00,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:58:00,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:00,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:58:00,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:58:00,859 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 20 states. [2020-10-29 03:58:02,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:02,276 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-10-29 03:58:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:58:02,277 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2020-10-29 03:58:02,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:02,279 INFO L225 Difference]: With dead ends: 59 [2020-10-29 03:58:02,279 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:58:02,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:58:02,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:58:02,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-10-29 03:58:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:58:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-10-29 03:58:02,292 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 38 [2020-10-29 03:58:02,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:02,293 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-10-29 03:58:02,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:58:02,293 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-10-29 03:58:02,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:58:02,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:02,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:02,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:58:02,295 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:02,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:02,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1563522384, now seen corresponding path program 1 times [2020-10-29 03:58:02,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:02,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338079273] [2020-10-29 03:58:02,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:02,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:02,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:03,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:03,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:04,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:06,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:06,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:58:06,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:58:06,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4107 [2020-10-29 03:58:06,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:06,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:58:06,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:58:06,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:58:06,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:06,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:06,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:06,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:58:06,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:06,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:58:06,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:06,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:06,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:06,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:06,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:58:06,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:06,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:06,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:58:06,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338079273] [2020-10-29 03:58:06,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:06,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:58:06,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150085122] [2020-10-29 03:58:06,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:58:06,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:06,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:58:06,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:58:06,732 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 13 states. [2020-10-29 03:58:07,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:07,294 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2020-10-29 03:58:07,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:58:07,295 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-29 03:58:07,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:07,296 INFO L225 Difference]: With dead ends: 65 [2020-10-29 03:58:07,296 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:58:07,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:58:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:58:07,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-29 03:58:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:58:07,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-29 03:58:07,320 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 38 [2020-10-29 03:58:07,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:07,321 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-29 03:58:07,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:58:07,321 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-29 03:58:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:58:07,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:07,323 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:07,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:58:07,324 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:07,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:07,324 INFO L82 PathProgramCache]: Analyzing trace with hash 2017163884, now seen corresponding path program 2 times [2020-10-29 03:58:07,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:07,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913958398] [2020-10-29 03:58:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:07,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:07,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:07,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:08,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:08,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:10,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:10,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:58:10,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:58:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3565 [2020-10-29 03:58:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:10,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:58:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:58:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:58:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:11,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:11,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:11,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:11,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:11,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:11,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:58:11,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:11,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:11,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:11,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:11,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:11,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:11,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:11,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:58:11,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:11,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:58:11,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913958398] [2020-10-29 03:58:11,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:11,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:58:11,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218831843] [2020-10-29 03:58:11,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:58:11,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:11,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:58:11,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:58:11,241 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 14 states. [2020-10-29 03:58:12,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:12,160 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-29 03:58:12,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:58:12,160 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-29 03:58:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:12,161 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:58:12,161 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:58:12,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:58:12,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:58:12,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-10-29 03:58:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:58:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-29 03:58:12,174 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 38 [2020-10-29 03:58:12,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:12,175 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-29 03:58:12,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:58:12,175 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-29 03:58:12,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:58:12,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:12,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:58:12,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:58:12,176 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:12,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:12,177 INFO L82 PathProgramCache]: Analyzing trace with hash -818549140, now seen corresponding path program 5 times [2020-10-29 03:58:12,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:12,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783960811] [2020-10-29 03:58:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:12,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:13,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:13,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:58:13,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:58:13,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-29 03:58:13,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:13,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:58:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:58:13,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:58:13,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:13,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:13,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:13,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:13,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:58:13,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:13,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:13,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:13,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:13,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:13,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:13,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:13,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:13,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:58:13,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:13,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:13,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:13,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:13,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:58:13,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783960811] [2020-10-29 03:58:13,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:13,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:58:13,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608838717] [2020-10-29 03:58:13,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:58:13,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:13,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:58:13,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:58:13,417 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 10 states. [2020-10-29 03:58:13,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:13,767 INFO L93 Difference]: Finished difference Result 138 states and 166 transitions. [2020-10-29 03:58:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:58:13,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-29 03:58:13,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:13,769 INFO L225 Difference]: With dead ends: 138 [2020-10-29 03:58:13,769 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 03:58:13,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:58:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 03:58:13,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 61. [2020-10-29 03:58:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:58:13,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2020-10-29 03:58:13,792 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 40 [2020-10-29 03:58:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:13,793 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2020-10-29 03:58:13,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:58:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2020-10-29 03:58:13,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:58:13,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:13,796 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 03:58:13,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:58:13,797 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:13,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:13,797 INFO L82 PathProgramCache]: Analyzing trace with hash 451576945, now seen corresponding path program 6 times [2020-10-29 03:58:13,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:13,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228320766] [2020-10-29 03:58:13,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:13,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:14,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:14,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:14,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:14,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:14,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:14,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:16,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:16,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:17,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:18,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:18,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:58:18,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 03:58:18,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:58:18,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:18,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:58:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:58:18,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:58:18,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:18,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:18,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:18,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:58:18,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:18,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:18,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:18,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:18,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:18,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:18,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:18,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:18,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:58:18,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:18,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:18,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:18,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:58:18,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228320766] [2020-10-29 03:58:18,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:18,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:58:18,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267668271] [2020-10-29 03:58:18,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:58:18,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:18,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:58:18,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:58:18,974 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 10 states. [2020-10-29 03:58:19,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:19,328 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2020-10-29 03:58:19,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:58:19,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-29 03:58:19,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:19,329 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:58:19,329 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:58:19,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:58:19,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:58:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 49. [2020-10-29 03:58:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:58:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2020-10-29 03:58:19,346 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 43 [2020-10-29 03:58:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:19,349 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2020-10-29 03:58:19,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:58:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2020-10-29 03:58:19,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:58:19,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:19,351 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-29 03:58:19,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:58:19,351 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:19,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1368274927, now seen corresponding path program 7 times [2020-10-29 03:58:19,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:19,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087013127] [2020-10-29 03:58:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:19,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:22,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:22,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:23,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:23,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:24,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:24,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:58:24,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:58:24,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:58:24,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:24,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:58:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:58:24,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:58:24,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:25,084 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2020-10-29 03:58:25,295 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-29 03:58:25,544 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-29 03:58:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:26,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:26,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:26,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:26,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:58:26,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:26,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:26,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:26,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:26,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:26,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:26,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:26,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:26,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:26,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:26,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:58:26,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:26,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:26,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:26,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:26,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:58:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 03:58:26,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087013127] [2020-10-29 03:58:26,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:26,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:58:26,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188549903] [2020-10-29 03:58:26,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:58:26,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:26,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:58:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:58:26,385 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 24 states. [2020-10-29 03:58:27,615 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-29 03:58:28,035 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-29 03:58:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:28,799 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-29 03:58:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:58:28,800 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-10-29 03:58:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:28,801 INFO L225 Difference]: With dead ends: 75 [2020-10-29 03:58:28,802 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:58:28,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=166, Invalid=1394, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:58:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:58:28,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-10-29 03:58:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 03:58:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2020-10-29 03:58:28,819 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 45 [2020-10-29 03:58:28,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:28,819 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2020-10-29 03:58:28,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:58:28,819 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2020-10-29 03:58:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:58:28,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:28,821 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-29 03:58:28,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:58:28,821 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:28,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:28,822 INFO L82 PathProgramCache]: Analyzing trace with hash -220072975, now seen corresponding path program 3 times [2020-10-29 03:58:28,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:28,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384643836] [2020-10-29 03:58:28,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:28,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:28,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:29,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:29,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:30,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:31,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:33,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:33,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:33,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:58:33,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:58:33,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:58:33,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:33,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:58:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:58:33,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:58:33,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:34,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:34,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:34,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:34,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:58:34,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:34,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:34,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:34,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:34,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:34,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:34,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:34,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:34,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:34,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:58:34,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:34,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:34,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:34,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:58:34,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384643836] [2020-10-29 03:58:34,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:34,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:58:34,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877286299] [2020-10-29 03:58:34,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:58:34,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:34,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:58:34,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:58:34,229 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 16 states. [2020-10-29 03:58:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:35,212 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-10-29 03:58:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:58:35,213 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 03:58:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:35,214 INFO L225 Difference]: With dead ends: 82 [2020-10-29 03:58:35,214 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:58:35,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=284, Invalid=772, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:58:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:58:35,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 57. [2020-10-29 03:58:35,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:58:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2020-10-29 03:58:35,226 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 45 [2020-10-29 03:58:35,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:35,226 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2020-10-29 03:58:35,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:58:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2020-10-29 03:58:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:58:35,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:35,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-29 03:58:35,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:58:35,228 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:35,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash 550626477, now seen corresponding path program 4 times [2020-10-29 03:58:35,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:35,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326717835] [2020-10-29 03:58:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:35,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:36,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:39,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:39,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:40,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:58:40,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:58:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:58:40,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:40,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:58:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:58:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:58:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:40,565 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 25 [2020-10-29 03:58:40,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:40,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:40,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:40,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:40,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:58:40,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:40,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:40,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:40,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:40,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:40,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:40,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:40,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:40,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:40,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:58:40,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:40,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:40,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:40,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:40,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 03:58:40,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326717835] [2020-10-29 03:58:40,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:40,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:58:40,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787223300] [2020-10-29 03:58:40,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:58:40,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:40,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:58:40,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:58:40,950 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 16 states. [2020-10-29 03:58:41,378 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-29 03:58:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:42,336 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2020-10-29 03:58:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:58:42,338 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-29 03:58:42,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:42,339 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:58:42,339 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:58:42,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:58:42,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:58:42,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 62. [2020-10-29 03:58:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 03:58:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-29 03:58:42,351 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 45 [2020-10-29 03:58:42,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:42,351 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-29 03:58:42,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:58:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-29 03:58:42,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:58:42,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:42,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-10-29 03:58:42,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:58:42,358 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:42,359 INFO L82 PathProgramCache]: Analyzing trace with hash -437163407, now seen corresponding path program 5 times [2020-10-29 03:58:42,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:42,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775330699] [2020-10-29 03:58:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:42,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:42,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:43,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:47,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:47,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:58:47,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:58:47,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4925 [2020-10-29 03:58:47,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:47,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:47,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:58:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:58:47,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:58:47,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:47,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:47,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:47,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:47,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:47,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:47,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:58:47,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:47,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:47,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:47,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:47,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:47,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:47,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:58:47,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:47,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:47,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:47,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:47,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 03:58:47,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775330699] [2020-10-29 03:58:47,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:47,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:58:47,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894832970] [2020-10-29 03:58:47,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:58:47,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:47,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:58:47,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:58:47,792 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 17 states. [2020-10-29 03:58:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:48,904 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2020-10-29 03:58:48,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:58:48,905 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 45 [2020-10-29 03:58:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:48,906 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:58:48,906 INFO L226 Difference]: Without dead ends: 97 [2020-10-29 03:58:48,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:58:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-29 03:58:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 62. [2020-10-29 03:58:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 03:58:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-29 03:58:48,918 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 45 [2020-10-29 03:58:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:48,918 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-29 03:58:48,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:58:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-29 03:58:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:58:48,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:48,919 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-29 03:58:48,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:58:48,919 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:48,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:48,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1846739949, now seen corresponding path program 8 times [2020-10-29 03:58:48,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:48,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429791875] [2020-10-29 03:58:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:48,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1344 [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:58:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:50,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:50,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:50,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:50,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:50,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:58:50,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:50,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:50,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:50,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:50,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:50,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:50,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:58:50,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:50,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:58:50,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429791875] [2020-10-29 03:58:50,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:50,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:58:50,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168579710] [2020-10-29 03:58:50,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:58:50,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:50,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:58:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:58:50,422 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 12 states. [2020-10-29 03:58:50,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:50,835 INFO L93 Difference]: Finished difference Result 154 states and 180 transitions. [2020-10-29 03:58:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:58:50,835 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-29 03:58:50,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:50,837 INFO L225 Difference]: With dead ends: 154 [2020-10-29 03:58:50,837 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 03:58:50,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:58:50,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 03:58:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 65. [2020-10-29 03:58:50,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:58:50,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-10-29 03:58:50,852 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 47 [2020-10-29 03:58:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:50,852 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-10-29 03:58:50,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:58:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-10-29 03:58:50,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:58:50,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:50,853 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2020-10-29 03:58:50,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:58:50,854 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash -2062803320, now seen corresponding path program 9 times [2020-10-29 03:58:50,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:50,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706061160] [2020-10-29 03:58:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:50,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:51,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:51,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:53,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:53,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:54,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:54,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:54,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:54,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:55,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:55,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:55,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:55,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:55,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:58:55,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-29 03:58:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:58:55,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:55,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:55,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:58:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:58:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:58:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:56,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:58:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:56,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:56,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:56,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:58:56,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:58:56,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:56,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:56,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:56,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:58:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:56,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:56,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:58:56,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:58:56,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:58:56,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:58:56,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:58:56,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:58:56,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:58:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:58:56,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:58:56,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:58:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:58:56,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706061160] [2020-10-29 03:58:56,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:58:56,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:58:56,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968673789] [2020-10-29 03:58:56,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:58:56,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:58:56,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:58:56,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:58:56,036 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 12 states. [2020-10-29 03:58:56,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:58:56,693 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-10-29 03:58:56,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:58:56,694 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-29 03:58:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:58:56,695 INFO L225 Difference]: With dead ends: 83 [2020-10-29 03:58:56,695 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:58:56,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:58:56,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:58:56,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 53. [2020-10-29 03:58:56,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:58:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-29 03:58:56,714 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 50 [2020-10-29 03:58:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:58:56,714 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-29 03:58:56,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:58:56,715 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-29 03:58:56,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:58:56,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:58:56,716 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-29 03:58:56,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:58:56,716 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:58:56,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:58:56,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1179539386, now seen corresponding path program 10 times [2020-10-29 03:58:56,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:58:56,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397551083] [2020-10-29 03:58:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:58:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:58:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:58:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:01,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:01,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:01,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:59:01,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:59:01,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:59:01,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:01,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:59:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:59:01,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:59:01,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:04,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:04,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:04,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:04,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:04,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:59:04,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:04,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:04,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:04,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:59:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:04,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:04,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:04,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:04,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:04,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:04,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:04,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:04,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:04,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:04,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:04,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:59:04,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397551083] [2020-10-29 03:59:04,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:04,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:59:04,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052264405] [2020-10-29 03:59:04,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:59:04,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:04,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:59:04,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:59:04,294 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 32 states. [2020-10-29 03:59:06,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:06,326 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2020-10-29 03:59:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:59:06,326 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 52 [2020-10-29 03:59:06,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:06,327 INFO L225 Difference]: With dead ends: 89 [2020-10-29 03:59:06,327 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:59:06,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=92, Invalid=1168, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:59:06,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:59:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 72. [2020-10-29 03:59:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 03:59:06,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2020-10-29 03:59:06,345 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 52 [2020-10-29 03:59:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:06,346 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2020-10-29 03:59:06,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:59:06,347 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2020-10-29 03:59:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:59:06,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:06,348 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2020-10-29 03:59:06,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:59:06,348 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:06,348 INFO L82 PathProgramCache]: Analyzing trace with hash -960684668, now seen corresponding path program 6 times [2020-10-29 03:59:06,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:06,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206673272] [2020-10-29 03:59:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:06,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:06,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:08,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:09,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:09,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:10,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:11,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:11,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:59:11,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 03:59:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 03:59:11,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:11,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:59:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:59:11,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:59:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:11,781 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2020-10-29 03:59:12,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:12,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:12,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 03:59:12,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:12,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:12,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:59:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:12,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:12,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:12,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:12,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:12,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:59:12,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206673272] [2020-10-29 03:59:12,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:12,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:59:12,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939738178] [2020-10-29 03:59:12,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:59:12,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:12,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:59:12,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:59:12,273 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand 18 states. [2020-10-29 03:59:12,750 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 32 [2020-10-29 03:59:13,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:13,308 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2020-10-29 03:59:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:59:13,310 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52 [2020-10-29 03:59:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:13,311 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:59:13,311 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:59:13,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:59:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:59:13,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2020-10-29 03:59:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:59:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2020-10-29 03:59:13,326 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 52 [2020-10-29 03:59:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:13,327 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2020-10-29 03:59:13,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:59:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2020-10-29 03:59:13,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:59:13,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:13,328 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2020-10-29 03:59:13,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:59:13,328 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:13,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:13,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1038990776, now seen corresponding path program 7 times [2020-10-29 03:59:13,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:13,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972804128] [2020-10-29 03:59:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:13,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:13,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:13,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:17,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:18,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:18,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:18,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:59:18,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:59:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 03:59:18,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:18,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:59:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:59:18,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:59:18,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:19,051 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-10-29 03:59:19,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:19,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:19,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:19,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:19,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:19,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:19,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:19,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:19,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:59:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:19,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:19,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:19,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:19,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:19,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:19,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:19,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:19,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:19,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:59:19,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972804128] [2020-10-29 03:59:19,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:19,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:59:19,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039222743] [2020-10-29 03:59:19,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:59:19,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:19,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:59:19,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:59:19,342 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 19 states. [2020-10-29 03:59:20,298 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-29 03:59:20,602 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-29 03:59:21,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:21,488 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2020-10-29 03:59:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:59:21,488 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-29 03:59:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:21,490 INFO L225 Difference]: With dead ends: 115 [2020-10-29 03:59:21,490 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:59:21,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:59:21,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:59:21,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 89. [2020-10-29 03:59:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:59:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2020-10-29 03:59:21,509 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 52 [2020-10-29 03:59:21,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:21,509 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2020-10-29 03:59:21,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:59:21,509 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2020-10-29 03:59:21,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:59:21,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:21,510 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2020-10-29 03:59:21,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:59:21,510 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:21,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:21,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1689012476, now seen corresponding path program 8 times [2020-10-29 03:59:21,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:21,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903928714] [2020-10-29 03:59:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:21,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:21,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:22,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:22,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:23,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:59:26,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:26,814 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2020-10-29 03:59:26,991 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-10-29 03:59:27,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:27,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:27,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:27,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:59:27,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:27,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:27,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:27,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:59:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:27,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:27,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:27,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:27,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:59:27,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:27,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:27,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:27,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:59:27,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903928714] [2020-10-29 03:59:27,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:27,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:59:27,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151333700] [2020-10-29 03:59:27,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:59:27,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:59:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:59:27,267 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand 20 states. [2020-10-29 03:59:27,879 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-29 03:59:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:28,694 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2020-10-29 03:59:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:59:28,695 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-10-29 03:59:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:28,697 INFO L225 Difference]: With dead ends: 147 [2020-10-29 03:59:28,697 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 03:59:28,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:59:28,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 03:59:28,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 89. [2020-10-29 03:59:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:59:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2020-10-29 03:59:28,714 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 52 [2020-10-29 03:59:28,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:28,715 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2020-10-29 03:59:28,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:59:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2020-10-29 03:59:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:59:28,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:28,716 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-10-29 03:59:28,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:59:28,716 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:28,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:28,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1528543876, now seen corresponding path program 11 times [2020-10-29 03:59:28,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:28,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445569999] [2020-10-29 03:59:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:28,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:31,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:31,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:59:31,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:59:31,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2763 [2020-10-29 03:59:31,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:31,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:59:31,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:59:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:59:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:31,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:31,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:31,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:31,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:31,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:31,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:31,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:31,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:59:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:31,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:31,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:31,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:31,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:31,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:31,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:31,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:31,677 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:59:31,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445569999] [2020-10-29 03:59:31,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:31,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:59:31,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992008153] [2020-10-29 03:59:31,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:59:31,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:31,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:59:31,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:59:31,680 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand 14 states. [2020-10-29 03:59:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:32,232 INFO L93 Difference]: Finished difference Result 185 states and 218 transitions. [2020-10-29 03:59:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:59:32,233 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 03:59:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:32,234 INFO L225 Difference]: With dead ends: 185 [2020-10-29 03:59:32,234 INFO L226 Difference]: Without dead ends: 112 [2020-10-29 03:59:32,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:59:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-29 03:59:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 85. [2020-10-29 03:59:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:59:32,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2020-10-29 03:59:32,255 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 54 [2020-10-29 03:59:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:32,255 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2020-10-29 03:59:32,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:59:32,255 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2020-10-29 03:59:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:59:32,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:32,256 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-10-29 03:59:32,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:59:32,256 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:32,257 INFO L82 PathProgramCache]: Analyzing trace with hash -740835996, now seen corresponding path program 12 times [2020-10-29 03:59:32,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:32,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077142747] [2020-10-29 03:59:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:32,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:33,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:33,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:34,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:35,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:36,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:37,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:37,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:59:37,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:59:37,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:59:37,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:37,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:37,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:59:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:59:37,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:59:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:37,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:37,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:37,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:37,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:37,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:37,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:37,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:37,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:37,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:37,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:59:37,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:37,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:37,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:37,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:37,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:37,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:37,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:37,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:37,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-29 03:59:37,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077142747] [2020-10-29 03:59:37,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:37,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:59:37,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315957] [2020-10-29 03:59:37,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:59:37,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:37,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:59:37,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:59:37,468 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand 14 states. [2020-10-29 03:59:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:38,149 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2020-10-29 03:59:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:59:38,150 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-29 03:59:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:38,151 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:59:38,151 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:59:38,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:59:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:59:38,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 60. [2020-10-29 03:59:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 03:59:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-29 03:59:38,167 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 54 [2020-10-29 03:59:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:38,167 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-29 03:59:38,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:59:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-29 03:59:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:59:38,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:38,168 INFO L422 BasicCegarLoop]: trace histogram [5, 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] [2020-10-29 03:59:38,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:59:38,169 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1364016719, now seen corresponding path program 13 times [2020-10-29 03:59:38,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:38,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209358819] [2020-10-29 03:59:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:38,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:39,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:41,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:43,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:43,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:59:43,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:59:43,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-29 03:59:43,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:43,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:59:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:59:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:59:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:44,091 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-10-29 03:59:44,394 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-10-29 03:59:44,612 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 43 [2020-10-29 03:59:44,780 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2020-10-29 03:59:45,101 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-29 03:59:47,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:47,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:47,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:47,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:59:47,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:47,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:47,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:47,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:59:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:47,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:47,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:47,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:59:47,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:47,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:59:48,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209358819] [2020-10-29 03:59:48,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:48,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:59:48,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452813968] [2020-10-29 03:59:48,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:59:48,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:48,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:59:48,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:59:48,026 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 38 states. [2020-10-29 03:59:50,055 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 46 [2020-10-29 03:59:51,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:51,333 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-10-29 03:59:51,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:59:51,334 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 59 [2020-10-29 03:59:51,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:51,335 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:59:51,335 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 03:59:51,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=293, Invalid=2257, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:59:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 03:59:51,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 69. [2020-10-29 03:59:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:59:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-10-29 03:59:51,349 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 59 [2020-10-29 03:59:51,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:51,350 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-10-29 03:59:51,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:59:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-10-29 03:59:51,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:59:51,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:51,350 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2020-10-29 03:59:51,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:59:51,351 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:51,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:51,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1230003213, now seen corresponding path program 9 times [2020-10-29 03:59:51,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:51,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625943818] [2020-10-29 03:59:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:51,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:51,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:51,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:52,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:54,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:55,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:55,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:55,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:55,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:56,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:56,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:59:56,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:59:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:59:56,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:56,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:59:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 03:59:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:59:56,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:56,784 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 30 [2020-10-29 03:59:56,939 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 29 [2020-10-29 03:59:57,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:59:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:57,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:57,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:59:57,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:57,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:59:57,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:57,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:57,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 03:59:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:57,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:59:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:59:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 49 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 03:59:57,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625943818] [2020-10-29 03:59:57,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:59:57,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:59:57,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121520394] [2020-10-29 03:59:57,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:59:57,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:59:57,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:59:57,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:59:57,434 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 20 states. [2020-10-29 03:59:57,957 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-29 03:59:58,870 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-29 03:59:59,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:59:59,514 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2020-10-29 03:59:59,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:59:59,515 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 59 [2020-10-29 03:59:59,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:59:59,516 INFO L225 Difference]: With dead ends: 102 [2020-10-29 03:59:59,517 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 03:59:59,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=269, Invalid=1371, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:59:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 03:59:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2020-10-29 03:59:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:59:59,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2020-10-29 03:59:59,532 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 59 [2020-10-29 03:59:59,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:59:59,533 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2020-10-29 03:59:59,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:59:59,533 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2020-10-29 03:59:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:59:59,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:59:59,533 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2020-10-29 03:59:59,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:59:59,534 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:59:59,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:59:59,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1007722543, now seen corresponding path program 10 times [2020-10-29 03:59:59,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:59:59,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109895709] [2020-10-29 03:59:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:59:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:59:59,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:59,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:59:59,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:04,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:04,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:04,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 04:00:04,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:00:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:00:04,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:04,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:00:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:00:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:00:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:05,344 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-10-29 04:00:05,479 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 28 [2020-10-29 04:00:05,641 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-10-29 04:00:05,825 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2020-10-29 04:00:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:06,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:06,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:06,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:06,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:00:06,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:06,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:06,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:06,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:06,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:06,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:06,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 04:00:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:06,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:06,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:06,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:06,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 04:00:06,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109895709] [2020-10-29 04:00:06,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:06,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:00:06,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546647604] [2020-10-29 04:00:06,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:00:06,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:06,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:00:06,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:00:06,244 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand 21 states. [2020-10-29 04:00:07,829 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-29 04:00:08,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:08,051 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2020-10-29 04:00:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 04:00:08,052 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-10-29 04:00:08,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:08,053 INFO L225 Difference]: With dead ends: 152 [2020-10-29 04:00:08,054 INFO L226 Difference]: Without dead ends: 117 [2020-10-29 04:00:08,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 04:00:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-29 04:00:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 106. [2020-10-29 04:00:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 04:00:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2020-10-29 04:00:08,080 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 59 [2020-10-29 04:00:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:08,080 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2020-10-29 04:00:08,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:00:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2020-10-29 04:00:08,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 04:00:08,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:08,081 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2020-10-29 04:00:08,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 04:00:08,082 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:08,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:08,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1386648973, now seen corresponding path program 11 times [2020-10-29 04:00:08,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:08,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280042249] [2020-10-29 04:00:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:08,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:08,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:08,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:08,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:08,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:08,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:09,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:09,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:12,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:13,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:13,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 04:00:13,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 04:00:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 04:00:13,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:13,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 04:00:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:00:13,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:00:13,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:13,593 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-10-29 04:00:13,906 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-29 04:00:14,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:14,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:14,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:14,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:14,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:14,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:00:14,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:14,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:14,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 04:00:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:14,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:14,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:14,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:14,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:14,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:14,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:14,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 44 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 04:00:14,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280042249] [2020-10-29 04:00:14,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:14,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 04:00:14,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926777015] [2020-10-29 04:00:14,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 04:00:14,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:14,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 04:00:14,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-10-29 04:00:14,358 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand 21 states. [2020-10-29 04:00:15,043 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-29 04:00:15,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:15,705 INFO L93 Difference]: Finished difference Result 180 states and 216 transitions. [2020-10-29 04:00:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 04:00:15,706 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2020-10-29 04:00:15,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:15,708 INFO L225 Difference]: With dead ends: 180 [2020-10-29 04:00:15,708 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 04:00:15,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=246, Invalid=944, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 04:00:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 04:00:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 118. [2020-10-29 04:00:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-29 04:00:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2020-10-29 04:00:15,733 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 59 [2020-10-29 04:00:15,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:15,733 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2020-10-29 04:00:15,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 04:00:15,733 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2020-10-29 04:00:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 04:00:15,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:15,734 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2020-10-29 04:00:15,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 04:00:15,735 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:15,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:15,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1291630161, now seen corresponding path program 12 times [2020-10-29 04:00:15,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:15,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761309764] [2020-10-29 04:00:15,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:16,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:18,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:18,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:20,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:20,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 04:00:20,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 04:00:20,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:00:20,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:20,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 04:00:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:00:20,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 04:00:20,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:21,306 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2020-10-29 04:00:21,569 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-10-29 04:00:21,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:21,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:21,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 04:00:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:21,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:21,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:21,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:21,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:21,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:21,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:21,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:21,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-29 04:00:21,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761309764] [2020-10-29 04:00:21,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:21,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 04:00:21,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003181482] [2020-10-29 04:00:21,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 04:00:21,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:21,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 04:00:21,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:00:21,921 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand 23 states. [2020-10-29 04:00:22,665 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-29 04:00:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:23,634 INFO L93 Difference]: Finished difference Result 195 states and 231 transitions. [2020-10-29 04:00:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 04:00:23,635 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 59 [2020-10-29 04:00:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:23,637 INFO L225 Difference]: With dead ends: 195 [2020-10-29 04:00:23,637 INFO L226 Difference]: Without dead ends: 188 [2020-10-29 04:00:23,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 04:00:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-29 04:00:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 118. [2020-10-29 04:00:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-29 04:00:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2020-10-29 04:00:23,665 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 59 [2020-10-29 04:00:23,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:23,665 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2020-10-29 04:00:23,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 04:00:23,665 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2020-10-29 04:00:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 04:00:23,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:23,666 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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] [2020-10-29 04:00:23,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 04:00:23,666 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:23,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:23,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1205563855, now seen corresponding path program 13 times [2020-10-29 04:00:23,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:23,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546414626] [2020-10-29 04:00:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:23,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:23,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:25,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:28,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:28,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 04:00:28,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:00:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:00:28,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:28,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:00:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:00:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 04:00:28,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:28,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:28,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:28,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:28,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:28,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:00:28,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:28,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:28,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:28,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:28,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:28,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 04:00:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:28,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:28,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:28,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:28,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:28,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:28,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-29 04:00:28,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546414626] [2020-10-29 04:00:28,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:28,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:00:28,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135384118] [2020-10-29 04:00:28,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:00:28,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:00:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:00:28,909 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand 16 states. [2020-10-29 04:00:29,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:29,593 INFO L93 Difference]: Finished difference Result 280 states and 335 transitions. [2020-10-29 04:00:29,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 04:00:29,594 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2020-10-29 04:00:29,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:29,597 INFO L225 Difference]: With dead ends: 280 [2020-10-29 04:00:29,597 INFO L226 Difference]: Without dead ends: 190 [2020-10-29 04:00:29,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-29 04:00:29,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-29 04:00:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 114. [2020-10-29 04:00:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-29 04:00:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2020-10-29 04:00:29,628 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 61 [2020-10-29 04:00:29,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:29,628 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2020-10-29 04:00:29,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:00:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2020-10-29 04:00:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 04:00:29,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:29,629 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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] [2020-10-29 04:00:29,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 04:00:29,630 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:29,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1206194957, now seen corresponding path program 14 times [2020-10-29 04:00:29,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:29,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171171021] [2020-10-29 04:00:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:29,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:29,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:30,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:32,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 04:00:34,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:00:34,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 04:00:34,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:34,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 04:00:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:00:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 04:00:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:34,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:34,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:34,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:34,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:34,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:34,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:34,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 04:00:34,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:34,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:34,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:34,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 04:00:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:34,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:34,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:34,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:34,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:34,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:00:34,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:34,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:34,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 55 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 04:00:34,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171171021] [2020-10-29 04:00:34,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:34,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 04:00:34,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464455271] [2020-10-29 04:00:34,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 04:00:34,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:34,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 04:00:34,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:00:34,893 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand 16 states. [2020-10-29 04:00:35,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:35,856 INFO L93 Difference]: Finished difference Result 166 states and 194 transitions. [2020-10-29 04:00:35,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:00:35,858 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2020-10-29 04:00:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:35,859 INFO L225 Difference]: With dead ends: 166 [2020-10-29 04:00:35,859 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 04:00:35,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2020-10-29 04:00:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 04:00:35,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 70. [2020-10-29 04:00:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 04:00:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2020-10-29 04:00:35,883 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 61 [2020-10-29 04:00:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:35,883 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2020-10-29 04:00:35,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 04:00:35,883 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2020-10-29 04:00:35,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 04:00:35,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:35,884 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:00:35,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 04:00:35,884 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:35,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1874321502, now seen corresponding path program 14 times [2020-10-29 04:00:35,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:35,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139857243] [2020-10-29 04:00:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:41,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:41,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:00:41,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 04:00:41,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5364 [2020-10-29 04:00:41,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:41,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 04:00:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:00:41,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 04:00:41,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:41,838 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-10-29 04:00:41,966 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-29 04:00:42,143 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-29 04:00:42,367 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-29 04:00:42,510 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2020-10-29 04:00:42,709 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-29 04:00:42,936 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2020-10-29 04:00:43,144 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-29 04:00:43,386 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2020-10-29 04:00:43,662 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2020-10-29 04:00:43,858 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-10-29 04:00:44,106 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2020-10-29 04:00:44,392 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2020-10-29 04:00:44,615 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-10-29 04:00:44,794 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-10-29 04:00:45,456 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-29 04:00:45,631 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-10-29 04:00:45,800 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-29 04:00:47,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:00:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:47,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:47,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:47,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:00:47,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:47,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:00:47,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:47,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:47,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:47,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 04:00:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:47,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:47,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:00:47,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:00:47,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:00:47,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:00:47,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:00:47,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:00:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:00:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:00:47,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:00:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:00:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 25 proven. 78 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-29 04:00:47,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139857243] [2020-10-29 04:00:47,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:00:47,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 04:00:47,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883320880] [2020-10-29 04:00:47,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 04:00:47,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:00:47,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 04:00:47,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 04:00:47,583 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand 41 states. [2020-10-29 04:00:48,448 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2020-10-29 04:00:48,950 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2020-10-29 04:00:49,314 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-29 04:00:50,113 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-10-29 04:00:50,546 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-10-29 04:00:50,715 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 04:00:51,037 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-10-29 04:00:51,275 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-29 04:00:51,586 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-10-29 04:00:51,898 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-29 04:00:52,185 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-29 04:00:52,495 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-29 04:00:52,815 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-10-29 04:00:53,345 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-29 04:00:53,761 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-29 04:00:53,954 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-10-29 04:00:54,338 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 80 [2020-10-29 04:00:54,580 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-10-29 04:00:54,801 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-29 04:00:55,187 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-10-29 04:00:55,681 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2020-10-29 04:00:56,044 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2020-10-29 04:00:56,279 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 04:00:56,574 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2020-10-29 04:00:56,896 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-29 04:00:57,209 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-29 04:00:57,543 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-10-29 04:00:58,062 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-10-29 04:00:58,277 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-29 04:00:58,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:00:58,672 INFO L93 Difference]: Finished difference Result 140 states and 161 transitions. [2020-10-29 04:00:58,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-29 04:00:58,673 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 66 [2020-10-29 04:00:58,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:00:58,674 INFO L225 Difference]: With dead ends: 140 [2020-10-29 04:00:58,674 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 04:00:58,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=1086, Invalid=5886, Unknown=0, NotChecked=0, Total=6972 [2020-10-29 04:00:58,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 04:00:58,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 82. [2020-10-29 04:00:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 04:00:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2020-10-29 04:00:58,699 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 66 [2020-10-29 04:00:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:00:58,699 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2020-10-29 04:00:58,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 04:00:58,699 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2020-10-29 04:00:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 04:00:58,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:00:58,700 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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] [2020-10-29 04:00:58,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 04:00:58,700 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:00:58,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:00:58,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1936361116, now seen corresponding path program 15 times [2020-10-29 04:00:58,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:00:58,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101974837] [2020-10-29 04:00:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:00:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:00:58,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:58,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:58,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:59,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:00:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:03,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:03,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:01:03,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:01:03,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 04:01:03,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:03,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 04:01:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:01:03,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 04:01:03,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:04,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:04,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:04,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:04,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:04,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:04,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:04,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 04:01:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:04,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:04,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:04,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:04,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:04,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:01:04,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:04,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:04,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:04,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 23 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 04:01:04,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101974837] [2020-10-29 04:01:04,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:04,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 04:01:04,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349030910] [2020-10-29 04:01:04,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 04:01:04,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:04,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 04:01:04,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:01:04,229 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand 15 states. [2020-10-29 04:01:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:05,412 INFO L93 Difference]: Finished difference Result 134 states and 157 transitions. [2020-10-29 04:01:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 04:01:05,413 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-29 04:01:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:05,414 INFO L225 Difference]: With dead ends: 134 [2020-10-29 04:01:05,414 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 04:01:05,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-10-29 04:01:05,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 04:01:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 94. [2020-10-29 04:01:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 04:01:05,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2020-10-29 04:01:05,439 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 66 [2020-10-29 04:01:05,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:05,439 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2020-10-29 04:01:05,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 04:01:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2020-10-29 04:01:05,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 04:01:05,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:05,440 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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] [2020-10-29 04:01:05,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 04:01:05,441 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:05,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:05,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1034442400, now seen corresponding path program 16 times [2020-10-29 04:01:05,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:05,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631772572] [2020-10-29 04:01:05,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:05,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:05,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:05,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:06,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:08,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:09,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:10,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:10,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:01:10,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 04:01:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:01:10,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:10,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 04:01:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:01:10,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 04:01:10,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:10,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:10,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:10,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:10,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 04:01:10,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:10,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:10,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:10,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 04:01:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:10,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:10,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:10,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 04:01:10,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:10,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:10,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:10,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 29 proven. 45 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-29 04:01:10,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631772572] [2020-10-29 04:01:10,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:10,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 04:01:10,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706637402] [2020-10-29 04:01:10,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 04:01:10,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:10,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 04:01:10,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-29 04:01:10,835 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand 13 states. [2020-10-29 04:01:11,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:11,717 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2020-10-29 04:01:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 04:01:11,718 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-10-29 04:01:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:11,719 INFO L225 Difference]: With dead ends: 126 [2020-10-29 04:01:11,720 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 04:01:11,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-29 04:01:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 04:01:11,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2020-10-29 04:01:11,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 04:01:11,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2020-10-29 04:01:11,748 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 66 [2020-10-29 04:01:11,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:11,749 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2020-10-29 04:01:11,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 04:01:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2020-10-29 04:01:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 04:01:11,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:11,750 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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] [2020-10-29 04:01:11,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 04:01:11,750 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash -2145886180, now seen corresponding path program 17 times [2020-10-29 04:01:11,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:11,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193176250] [2020-10-29 04:01:11,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:12,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:12,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:13,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:13,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:13,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:15,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:15,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:16,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:16,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 04:01:16,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 04:01:16,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 04:01:16,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:16,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 04:01:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 04:01:16,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 04:01:16,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:17,731 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-29 04:01:18,325 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-10-29 04:01:19,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:01:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:19,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:19,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:01:19,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:19,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 04:01:19,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:19,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:19,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:19,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-29 04:01:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:19,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:01:19,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 04:01:19,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:01:19,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 04:01:19,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:01:19,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:01:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:01:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:01:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:01:19,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:01:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 25 proven. 62 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 04:01:19,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193176250] [2020-10-29 04:01:19,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:01:19,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 04:01:19,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056951691] [2020-10-29 04:01:19,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 04:01:19,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:01:19,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 04:01:19,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2020-10-29 04:01:19,167 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand 25 states. [2020-10-29 04:01:20,000 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2020-10-29 04:01:20,488 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2020-10-29 04:01:20,901 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 44 [2020-10-29 04:01:22,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:01:22,463 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2020-10-29 04:01:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 04:01:22,464 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 66 [2020-10-29 04:01:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:01:22,465 INFO L225 Difference]: With dead ends: 134 [2020-10-29 04:01:22,466 INFO L226 Difference]: Without dead ends: 113 [2020-10-29 04:01:22,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=547, Invalid=2105, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 04:01:22,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-29 04:01:22,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 82. [2020-10-29 04:01:22,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 04:01:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-29 04:01:22,490 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 66 [2020-10-29 04:01:22,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:01:22,491 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-29 04:01:22,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 04:01:22,491 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-29 04:01:22,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 04:01:22,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:01:22,492 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 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] [2020-10-29 04:01:22,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 04:01:22,492 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:01:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:01:22,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1030316000, now seen corresponding path program 18 times [2020-10-29 04:01:22,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:01:22,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712329647] [2020-10-29 04:01:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:01:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:01:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:01:22,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking...