/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:34:51,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:34:51,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:34:51,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:34:51,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:34:51,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:34:51,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:34:51,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:34:51,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:34:51,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:34:51,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:34:51,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:34:51,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:34:51,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:34:51,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:34:51,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:34:51,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:34:51,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:34:51,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:34:51,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:34:51,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:34:51,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:34:51,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:34:51,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:34:51,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:34:51,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:34:51,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:34:51,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:34:51,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:34:51,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:34:51,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:34:51,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:34:51,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:34:51,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:34:51,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:34:51,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:34:51,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:34:51,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:34:51,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:34:51,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:34:51,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:34:51,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:34:51,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:34:51,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:34:51,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:34:51,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:34:51,167 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:34:51,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:34:51,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:34:51,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:34:51,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:34:51,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:34:51,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:34:51,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:34:51,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:34:51,170 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:34:51,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:34:51,170 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:34:51,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:34:51,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:34:51,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:34:51,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:34:51,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:34:51,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:34:51,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:34:51,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:34:51,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:34:51,173 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:34:51,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:34:51,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:34:51,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:34:51,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:34:51,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:34:51,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:34:51,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:34:51,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:34:51,733 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:34:51,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label03.c [2020-10-26 23:34:51,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc91f1523/ae2c9ebc7eed4beeb0be52bc3cb6390e/FLAG11d7660fa [2020-10-26 23:34:52,694 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:34:52,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label03.c [2020-10-26 23:34:52,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc91f1523/ae2c9ebc7eed4beeb0be52bc3cb6390e/FLAG11d7660fa [2020-10-26 23:34:52,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc91f1523/ae2c9ebc7eed4beeb0be52bc3cb6390e [2020-10-26 23:34:52,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:34:52,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:34:52,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:34:52,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:34:52,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:34:52,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:34:52" (1/1) ... [2020-10-26 23:34:52,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e09d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:52, skipping insertion in model container [2020-10-26 23:34:52,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:34:52" (1/1) ... [2020-10-26 23:34:52,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:34:52,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:34:53,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:34:53,750 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:34:54,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:34:54,070 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:34:54,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54 WrapperNode [2020-10-26 23:34:54,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:34:54,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:34:54,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:34:54,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:34:54,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54" (1/1) ... [2020-10-26 23:34:54,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54" (1/1) ... [2020-10-26 23:34:54,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54" (1/1) ... [2020-10-26 23:34:54,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54" (1/1) ... [2020-10-26 23:34:54,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54" (1/1) ... [2020-10-26 23:34:54,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54" (1/1) ... [2020-10-26 23:34:54,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54" (1/1) ... [2020-10-26 23:34:54,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:34:54,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:34:54,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:34:54,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:34:54,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:34:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:34:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:34:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:34:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:34:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:34:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:34:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:34:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:34:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:34:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:34:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:34:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:34:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:34:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:34:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:34:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:34:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:34:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:34:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:34:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:34:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:34:57,741 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:34:57,741 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:34:57,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:34:57 BoogieIcfgContainer [2020-10-26 23:34:57,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:34:57,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:34:57,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:34:57,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:34:57,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:34:52" (1/3) ... [2020-10-26 23:34:57,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283c0280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:34:57, skipping insertion in model container [2020-10-26 23:34:57,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:34:54" (2/3) ... [2020-10-26 23:34:57,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283c0280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:34:57, skipping insertion in model container [2020-10-26 23:34:57,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:34:57" (3/3) ... [2020-10-26 23:34:57,755 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label03.c [2020-10-26 23:34:57,769 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:34:57,777 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:34:57,793 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:34:57,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:34:57,827 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:34:57,827 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:34:57,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:34:57,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:34:57,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:34:57,828 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:34:57,828 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:34:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:34:57,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 23:34:57,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:34:57,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:34:57,866 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:34:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:34:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1926237015, now seen corresponding path program 1 times [2020-10-26 23:34:57,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:34:57,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598475033] [2020-10-26 23:34:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:34:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:58,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:58,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-26 23:34:58,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:58,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-26 23:34:58,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:58,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:34:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:34:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-26 23:34:58,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:34:58,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:34:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:34:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:34:58,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:34:58,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:34:58,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:34:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:34:58,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:34:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:34:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:34:58,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:34:58,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:34:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:34:58,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598475033] [2020-10-26 23:34:58,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:34:58,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:34:58,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241674676] [2020-10-26 23:34:58,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:34:58,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:34:58,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:34:58,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:34:58,941 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:35:07,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:07,469 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-26 23:35:07,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:35:07,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-26 23:35:07,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:07,497 INFO L225 Difference]: With dead ends: 1250 [2020-10-26 23:35:07,497 INFO L226 Difference]: Without dead ends: 730 [2020-10-26 23:35:07,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:35:07,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-26 23:35:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-26 23:35:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-26 23:35:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-26 23:35:07,633 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 30 [2020-10-26 23:35:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:07,633 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-26 23:35:07,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:35:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-26 23:35:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-26 23:35:07,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:07,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:07,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:35:07,643 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:07,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1477747010, now seen corresponding path program 1 times [2020-10-26 23:35:07,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:07,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338114497] [2020-10-26 23:35:07,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:07,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:35:09,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:09,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1712 [2020-10-26 23:35:09,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:35:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:35:09,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:35:09,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:35:09,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:09,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:09,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:09,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:35:09,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:35:09,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:09,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:09,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:09,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:35:09,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:09,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 23:35:09,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:35:09,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:35:09,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338114497] [2020-10-26 23:35:09,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:35:09,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:35:09,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623953682] [2020-10-26 23:35:09,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:35:09,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:09,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:35:09,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:09,936 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 7 states. [2020-10-26 23:35:17,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:17,689 INFO L93 Difference]: Finished difference Result 1776 states and 3021 transitions. [2020-10-26 23:35:17,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:35:17,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-26 23:35:17,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:17,724 INFO L225 Difference]: With dead ends: 1776 [2020-10-26 23:35:17,724 INFO L226 Difference]: Without dead ends: 1069 [2020-10-26 23:35:17,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:35:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-10-26 23:35:17,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1042. [2020-10-26 23:35:17,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-26 23:35:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1663 transitions. [2020-10-26 23:35:17,809 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1663 transitions. Word has length 99 [2020-10-26 23:35:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:17,810 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1663 transitions. [2020-10-26 23:35:17,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:35:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1663 transitions. [2020-10-26 23:35:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-26 23:35:17,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:17,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:17,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:35:17,825 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:17,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:17,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1049700542, now seen corresponding path program 1 times [2020-10-26 23:35:17,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:17,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761284475] [2020-10-26 23:35:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:17,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:18,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:18,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:18,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:35:18,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:35:18,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-10-26 23:35:18,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:18,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:35:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:35:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:35:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:19,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:19,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:19,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:19,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:35:19,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:35:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:19,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:19,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:19,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:35:19,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-26 23:35:19,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:19,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:35:19,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:35:19,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761284475] [2020-10-26 23:35:19,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:35:19,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:35:19,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398605415] [2020-10-26 23:35:19,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:35:19,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:19,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:35:19,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:19,355 INFO L87 Difference]: Start difference. First operand 1042 states and 1663 transitions. Second operand 7 states. [2020-10-26 23:35:28,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:28,885 INFO L93 Difference]: Finished difference Result 2759 states and 4517 transitions. [2020-10-26 23:35:28,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:35:28,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-26 23:35:28,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:28,902 INFO L225 Difference]: With dead ends: 2759 [2020-10-26 23:35:28,902 INFO L226 Difference]: Without dead ends: 1723 [2020-10-26 23:35:28,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:35:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-10-26 23:35:28,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1658. [2020-10-26 23:35:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-26 23:35:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2310 transitions. [2020-10-26 23:35:28,982 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2310 transitions. Word has length 100 [2020-10-26 23:35:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:28,983 INFO L481 AbstractCegarLoop]: Abstraction has 1658 states and 2310 transitions. [2020-10-26 23:35:28,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:35:28,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2310 transitions. [2020-10-26 23:35:28,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 23:35:28,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:28,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:28,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:35:28,985 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:28,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:28,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1889059206, now seen corresponding path program 1 times [2020-10-26 23:35:28,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:28,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804607769] [2020-10-26 23:35:28,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:29,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:29,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:29,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:35:29,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:29,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-26 23:35:29,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:29,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:35:29,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:35:29,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:35:29,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-26 23:35:29,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:30,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:30,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:30,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:30,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:30,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:35:30,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:30,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:35:30,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:30,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:30,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:30,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:35:30,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-26 23:35:30,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:35:30,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:35:30,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804607769] [2020-10-26 23:35:30,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:35:30,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:35:30,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877569564] [2020-10-26 23:35:30,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:35:30,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:30,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:35:30,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:35:30,347 INFO L87 Difference]: Start difference. First operand 1658 states and 2310 transitions. Second operand 7 states. [2020-10-26 23:35:40,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:40,421 INFO L93 Difference]: Finished difference Result 4307 states and 6246 transitions. [2020-10-26 23:35:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:35:40,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-26 23:35:40,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:40,438 INFO L225 Difference]: With dead ends: 4307 [2020-10-26 23:35:40,439 INFO L226 Difference]: Without dead ends: 2962 [2020-10-26 23:35:40,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:35:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-10-26 23:35:40,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2303. [2020-10-26 23:35:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2020-10-26 23:35:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 3063 transitions. [2020-10-26 23:35:40,520 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 3063 transitions. Word has length 104 [2020-10-26 23:35:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:40,521 INFO L481 AbstractCegarLoop]: Abstraction has 2303 states and 3063 transitions. [2020-10-26 23:35:40,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:35:40,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 3063 transitions. [2020-10-26 23:35:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-26 23:35:40,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:40,527 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:40,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:35:40,527 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:40,528 INFO L82 PathProgramCache]: Analyzing trace with hash 998791190, now seen corresponding path program 1 times [2020-10-26 23:35:40,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:40,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251989346] [2020-10-26 23:35:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:41,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:42,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:42,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-26 23:35:42,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:35:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1848 [2020-10-26 23:35:42,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:35:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:35:42,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-26 23:35:42,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:35:42,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:42,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:42,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:42,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:42,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:35:42,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:42,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:35:42,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:42,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:43,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:43,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:35:43,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-10-26 23:35:43,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:43,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:35:43,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:35:43,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251989346] [2020-10-26 23:35:43,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:35:43,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:35:43,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906045169] [2020-10-26 23:35:43,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:35:43,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:35:43,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:35:43,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:35:43,712 INFO L87 Difference]: Start difference. First operand 2303 states and 3063 transitions. Second operand 6 states. [2020-10-26 23:35:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:35:53,622 INFO L93 Difference]: Finished difference Result 5569 states and 7695 transitions. [2020-10-26 23:35:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:35:53,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 304 [2020-10-26 23:35:53,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:35:53,668 INFO L225 Difference]: With dead ends: 5569 [2020-10-26 23:35:53,668 INFO L226 Difference]: Without dead ends: 4210 [2020-10-26 23:35:53,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:35:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2020-10-26 23:35:53,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 4193. [2020-10-26 23:35:53,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4193 states. [2020-10-26 23:35:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4193 states to 4193 states and 5267 transitions. [2020-10-26 23:35:53,791 INFO L78 Accepts]: Start accepts. Automaton has 4193 states and 5267 transitions. Word has length 304 [2020-10-26 23:35:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:35:53,793 INFO L481 AbstractCegarLoop]: Abstraction has 4193 states and 5267 transitions. [2020-10-26 23:35:53,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:35:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4193 states and 5267 transitions. [2020-10-26 23:35:53,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-26 23:35:53,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:35:53,803 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:35:53,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:35:53,804 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:35:53,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:35:53,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1625179114, now seen corresponding path program 1 times [2020-10-26 23:35:53,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:35:53,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645550516] [2020-10-26 23:35:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:35:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:53,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:54,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:58,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:58,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-26 23:35:58,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:35:58,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:35:58,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:35:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:35:58,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:35:58,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:59,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:35:59,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:59,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:59,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:35:59,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:59,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:35:59,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:35:59,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:35:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:35:59,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:59,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:35:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:59,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:59,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:35:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-10-26 23:35:59,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:35:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:35:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:35:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:35:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:35:59,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:35:59,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:35:59,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:35:59,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:35:59,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:35:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:35:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:35:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:35:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:35:59,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-26 23:35:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:35:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:00,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:00,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:36:00,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:00,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:36:00,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:36:00,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 66 proven. 156 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-26 23:36:00,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645550516] [2020-10-26 23:36:00,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:00,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:36:00,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641369855] [2020-10-26 23:36:00,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:00,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:00,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:00,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:00,568 INFO L87 Difference]: Start difference. First operand 4193 states and 5267 transitions. Second operand 7 states. [2020-10-26 23:36:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:11,003 INFO L93 Difference]: Finished difference Result 8791 states and 11114 transitions. [2020-10-26 23:36:11,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:36:11,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-26 23:36:11,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:11,028 INFO L225 Difference]: With dead ends: 8791 [2020-10-26 23:36:11,029 INFO L226 Difference]: Without dead ends: 4911 [2020-10-26 23:36:11,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:36:11,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2020-10-26 23:36:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4836. [2020-10-26 23:36:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4836 states. [2020-10-26 23:36:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 5989 transitions. [2020-10-26 23:36:11,188 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 5989 transitions. Word has length 396 [2020-10-26 23:36:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:11,189 INFO L481 AbstractCegarLoop]: Abstraction has 4836 states and 5989 transitions. [2020-10-26 23:36:11,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:36:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 5989 transitions. [2020-10-26 23:36:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-26 23:36:11,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:11,200 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:11,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:36:11,201 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:11,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1664337993, now seen corresponding path program 1 times [2020-10-26 23:36:11,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:11,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [58593807] [2020-10-26 23:36:11,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:11,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:13,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:16,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:16,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-26 23:36:16,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:36:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-26 23:36:16,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:16,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:36:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:36:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 404 [2020-10-26 23:36:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:16,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:16,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:16,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:16,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:16,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:36:16,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:16,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:36:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:16,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:16,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:36:16,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-26 23:36:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:36:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:36:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:16,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:18,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:18,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:36:18,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:18,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1115 [2020-10-26 23:36:18,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:36:18,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:36:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:19,798 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 17 proven. 118 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:36:19,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [58593807] [2020-10-26 23:36:19,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:19,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:36:19,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178599679] [2020-10-26 23:36:19,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:36:19,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:19,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:36:19,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:36:19,801 INFO L87 Difference]: Start difference. First operand 4836 states and 5989 transitions. Second operand 12 states. [2020-10-26 23:36:20,651 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-10-26 23:36:21,116 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-26 23:36:22,400 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2020-10-26 23:36:22,622 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-26 23:36:23,283 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-10-26 23:36:23,526 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2020-10-26 23:36:23,929 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2020-10-26 23:36:30,140 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-26 23:36:39,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:39,782 INFO L93 Difference]: Finished difference Result 9793 states and 12765 transitions. [2020-10-26 23:36:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 23:36:39,784 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 399 [2020-10-26 23:36:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:39,818 INFO L225 Difference]: With dead ends: 9793 [2020-10-26 23:36:39,818 INFO L226 Difference]: Without dead ends: 7147 [2020-10-26 23:36:39,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=345, Invalid=845, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 23:36:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2020-10-26 23:36:40,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 6731. [2020-10-26 23:36:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6731 states. [2020-10-26 23:36:40,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6731 states to 6731 states and 8519 transitions. [2020-10-26 23:36:40,037 INFO L78 Accepts]: Start accepts. Automaton has 6731 states and 8519 transitions. Word has length 399 [2020-10-26 23:36:40,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:40,038 INFO L481 AbstractCegarLoop]: Abstraction has 6731 states and 8519 transitions. [2020-10-26 23:36:40,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:36:40,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6731 states and 8519 transitions. [2020-10-26 23:36:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-26 23:36:40,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:40,048 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:40,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:36:40,048 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:40,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:40,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1767009472, now seen corresponding path program 1 times [2020-10-26 23:36:40,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:40,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586844379] [2020-10-26 23:36:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:40,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:42,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:42,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-26 23:36:42,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:36:42,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2015 [2020-10-26 23:36:42,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:36:42,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-26 23:36:42,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:42,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:36:42,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:42,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:42,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:42,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:36:42,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:42,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:36:42,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:36:42,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:42,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:36:42,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:42,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:36:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:42,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:42,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:42,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:36:42,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-26 23:36:42,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:36:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:36:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:36:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:42,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:36:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:43,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:36:43,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:36:43,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:36:43,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-26 23:36:43,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:36:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:36:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:36:43,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:36:43,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:36:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:36:43,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586844379] [2020-10-26 23:36:43,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:36:43,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:36:43,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850957642] [2020-10-26 23:36:43,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:36:43,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:36:43,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:36:43,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:36:43,378 INFO L87 Difference]: Start difference. First operand 6731 states and 8519 transitions. Second operand 7 states. [2020-10-26 23:36:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:36:54,890 INFO L93 Difference]: Finished difference Result 15422 states and 20607 transitions. [2020-10-26 23:36:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:36:54,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2020-10-26 23:36:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:36:54,929 INFO L225 Difference]: With dead ends: 15422 [2020-10-26 23:36:54,929 INFO L226 Difference]: Without dead ends: 9313 [2020-10-26 23:36:54,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:36:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9313 states. [2020-10-26 23:36:55,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9313 to 9258. [2020-10-26 23:36:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9258 states. [2020-10-26 23:36:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9258 states to 9258 states and 11716 transitions. [2020-10-26 23:36:55,173 INFO L78 Accepts]: Start accepts. Automaton has 9258 states and 11716 transitions. Word has length 403 [2020-10-26 23:36:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:36:55,174 INFO L481 AbstractCegarLoop]: Abstraction has 9258 states and 11716 transitions. [2020-10-26 23:36:55,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:36:55,174 INFO L276 IsEmpty]: Start isEmpty. Operand 9258 states and 11716 transitions. [2020-10-26 23:36:55,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-26 23:36:55,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:36:55,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:36:55,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:36:55,194 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:36:55,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:36:55,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1920389788, now seen corresponding path program 1 times [2020-10-26 23:36:55,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:36:55,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906293207] [2020-10-26 23:36:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:36:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:36:55,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:55,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:36:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:00,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:00,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-26 23:37:00,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:37:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-26 23:37:00,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:37:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:37:00,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:00,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:00,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:00,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:00,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:37:00,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:00,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:00,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:00,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:00,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:00,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:00,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:37:00,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-26 23:37:00,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:37:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:00,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:37:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:01,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:01,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:01,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:37:01,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-26 23:37:01,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:37:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:01,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:37:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:01,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:01,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:01,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:37:01,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:01,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 23:37:01,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:01,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:37:01,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:01,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:01,791 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 178 proven. 82 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 23:37:01,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906293207] [2020-10-26 23:37:01,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:01,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:01,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772897030] [2020-10-26 23:37:01,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:01,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:01,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:01,794 INFO L87 Difference]: Start difference. First operand 9258 states and 11716 transitions. Second operand 7 states. [2020-10-26 23:37:11,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:11,853 INFO L93 Difference]: Finished difference Result 19224 states and 24455 transitions. [2020-10-26 23:37:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:37:11,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 498 [2020-10-26 23:37:11,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:11,905 INFO L225 Difference]: With dead ends: 19224 [2020-10-26 23:37:11,905 INFO L226 Difference]: Without dead ends: 10588 [2020-10-26 23:37:11,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:37:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10588 states. [2020-10-26 23:37:12,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10588 to 10526. [2020-10-26 23:37:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10526 states. [2020-10-26 23:37:12,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10526 states to 10526 states and 13066 transitions. [2020-10-26 23:37:12,227 INFO L78 Accepts]: Start accepts. Automaton has 10526 states and 13066 transitions. Word has length 498 [2020-10-26 23:37:12,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:12,228 INFO L481 AbstractCegarLoop]: Abstraction has 10526 states and 13066 transitions. [2020-10-26 23:37:12,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:37:12,228 INFO L276 IsEmpty]: Start isEmpty. Operand 10526 states and 13066 transitions. [2020-10-26 23:37:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2020-10-26 23:37:12,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:12,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:12,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:37:12,241 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:12,242 INFO L82 PathProgramCache]: Analyzing trace with hash -971348870, now seen corresponding path program 1 times [2020-10-26 23:37:12,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:12,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726471155] [2020-10-26 23:37:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:13,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:14,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:14,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:14,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-26 23:37:14,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:37:14,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2614 [2020-10-26 23:37:14,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:37:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 23:37:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:15,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:15,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:15,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:15,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:15,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:37:15,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:15,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:15,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:15,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:15,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:15,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:37:15,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 23:37:15,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:15,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:15,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:15,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:37:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:15,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:15,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:37:15,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:15,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-26 23:37:15,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:37:15,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:15,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:37:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:15,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:15,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-26 23:37:15,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 23:37:15,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:15,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:37:15,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:37:15,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726471155] [2020-10-26 23:37:15,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:15,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:15,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822480070] [2020-10-26 23:37:15,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:15,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:15,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:15,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:15,817 INFO L87 Difference]: Start difference. First operand 10526 states and 13066 transitions. Second operand 7 states. [2020-10-26 23:37:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:25,791 INFO L93 Difference]: Finished difference Result 22686 states and 29464 transitions. [2020-10-26 23:37:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:37:25,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 525 [2020-10-26 23:37:25,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:25,846 INFO L225 Difference]: With dead ends: 22686 [2020-10-26 23:37:25,847 INFO L226 Difference]: Without dead ends: 12782 [2020-10-26 23:37:25,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:37:25,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12782 states. [2020-10-26 23:37:26,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12782 to 12746. [2020-10-26 23:37:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12746 states. [2020-10-26 23:37:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12746 states to 12746 states and 16324 transitions. [2020-10-26 23:37:26,180 INFO L78 Accepts]: Start accepts. Automaton has 12746 states and 16324 transitions. Word has length 525 [2020-10-26 23:37:26,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:26,182 INFO L481 AbstractCegarLoop]: Abstraction has 12746 states and 16324 transitions. [2020-10-26 23:37:26,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:37:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 12746 states and 16324 transitions. [2020-10-26 23:37:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2020-10-26 23:37:26,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:26,196 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:26,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:37:26,196 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:26,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:26,197 INFO L82 PathProgramCache]: Analyzing trace with hash 771386089, now seen corresponding path program 1 times [2020-10-26 23:37:26,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:26,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789894281] [2020-10-26 23:37:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:27,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:27,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:30,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:30,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:30,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-26 23:37:30,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:37:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4123 [2020-10-26 23:37:30,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:37:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:37:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:30,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:30,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:30,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:30,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:37:30,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:30,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:30,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:30,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:30,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:30,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:30,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:37:30,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:37:30,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:30,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:30,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:30,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:37:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:30,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:30,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:37:30,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 23:37:30,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:30,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:37:30,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:37:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:31,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:31,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:31,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:31,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:37:31,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:37:31,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-26 23:37:31,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:37:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 302 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:37:31,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789894281] [2020-10-26 23:37:31,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:31,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:31,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526039832] [2020-10-26 23:37:31,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:31,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:31,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:31,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:31,496 INFO L87 Difference]: Start difference. First operand 12746 states and 16324 transitions. Second operand 7 states. [2020-10-26 23:37:32,300 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:37:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:37:43,466 INFO L93 Difference]: Finished difference Result 30000 states and 41587 transitions. [2020-10-26 23:37:43,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:37:43,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 555 [2020-10-26 23:37:43,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:37:43,542 INFO L225 Difference]: With dead ends: 30000 [2020-10-26 23:37:43,543 INFO L226 Difference]: Without dead ends: 18176 [2020-10-26 23:37:43,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:37:43,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18176 states. [2020-10-26 23:37:44,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18176 to 18080. [2020-10-26 23:37:44,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18080 states. [2020-10-26 23:37:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18080 states to 18080 states and 23011 transitions. [2020-10-26 23:37:44,220 INFO L78 Accepts]: Start accepts. Automaton has 18080 states and 23011 transitions. Word has length 555 [2020-10-26 23:37:44,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:37:44,221 INFO L481 AbstractCegarLoop]: Abstraction has 18080 states and 23011 transitions. [2020-10-26 23:37:44,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:37:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 18080 states and 23011 transitions. [2020-10-26 23:37:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2020-10-26 23:37:44,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:37:44,232 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:37:44,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:37:44,233 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:37:44,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:37:44,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1861914091, now seen corresponding path program 1 times [2020-10-26 23:37:44,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:37:44,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717381586] [2020-10-26 23:37:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:37:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:44,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:46,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:47,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:49,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-26 23:37:49,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:37:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-26 23:37:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:49,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:37:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:37:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:49,617 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:37:49,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:37:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:49,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:49,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:49,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:37:49,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:49,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:37:49,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:49,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:49,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:49,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:37:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:49,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:49,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:37:49,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:49,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:37:49,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:49,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:49,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:49,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:37:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:49,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:49,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:37:49,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:37:49,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:37:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:37:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:37:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:49,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:37:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:50,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:50,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:37:50,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:37:50,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:37:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:37:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:37:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:50,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-26 23:37:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:37:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:37:50,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:37:50,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:37:50,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:37:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:37:50,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:37:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:37:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:37:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:37:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:37:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 235 proven. 69 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-26 23:37:50,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717381586] [2020-10-26 23:37:50,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:37:50,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:37:50,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362838846] [2020-10-26 23:37:50,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:37:50,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:37:50,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:37:50,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:37:50,383 INFO L87 Difference]: Start difference. First operand 18080 states and 23011 transitions. Second operand 7 states. [2020-10-26 23:38:06,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:06,400 INFO L93 Difference]: Finished difference Result 38380 states and 48969 transitions. [2020-10-26 23:38:06,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:38:06,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 583 [2020-10-26 23:38:06,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:06,466 INFO L225 Difference]: With dead ends: 38380 [2020-10-26 23:38:06,466 INFO L226 Difference]: Without dead ends: 20922 [2020-10-26 23:38:06,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:38:06,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20922 states. [2020-10-26 23:38:06,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20922 to 19365. [2020-10-26 23:38:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19365 states. [2020-10-26 23:38:06,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19365 states to 19365 states and 23234 transitions. [2020-10-26 23:38:06,907 INFO L78 Accepts]: Start accepts. Automaton has 19365 states and 23234 transitions. Word has length 583 [2020-10-26 23:38:06,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:06,907 INFO L481 AbstractCegarLoop]: Abstraction has 19365 states and 23234 transitions. [2020-10-26 23:38:06,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:38:06,908 INFO L276 IsEmpty]: Start isEmpty. Operand 19365 states and 23234 transitions. [2020-10-26 23:38:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2020-10-26 23:38:06,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:06,927 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:06,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:38:06,928 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:06,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:06,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1633975141, now seen corresponding path program 1 times [2020-10-26 23:38:06,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:06,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087931364] [2020-10-26 23:38:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:07,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:07,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:10,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:10,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 707 [2020-10-26 23:38:10,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:38:10,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3581 [2020-10-26 23:38:10,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-26 23:38:10,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:38:10,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:10,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:38:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:10,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:10,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:38:10,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:38:10,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:10,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:10,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:10,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:38:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:11,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:11,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:38:11,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-26 23:38:11,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:11,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:11,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:38:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:11,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:11,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-26 23:38:11,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-26 23:38:11,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:38:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:38:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-26 23:38:11,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:11,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-26 23:38:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:11,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:11,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:11,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:38:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:38:11,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:38:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:38:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:38:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:11,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-26 23:38:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:11,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:11,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:38:11,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-26 23:38:11,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:38:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:38:11,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:38:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:38:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-26 23:38:11,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:38:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:38:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 255 proven. 79 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2020-10-26 23:38:12,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087931364] [2020-10-26 23:38:12,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:38:12,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:38:12,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906736555] [2020-10-26 23:38:12,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:38:12,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:38:12,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:38:12,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:38:12,010 INFO L87 Difference]: Start difference. First operand 19365 states and 23234 transitions. Second operand 7 states. [2020-10-26 23:38:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:38:28,907 INFO L93 Difference]: Finished difference Result 44374 states and 53996 transitions. [2020-10-26 23:38:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:38:28,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 689 [2020-10-26 23:38:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:38:29,111 INFO L225 Difference]: With dead ends: 44374 [2020-10-26 23:38:29,111 INFO L226 Difference]: Without dead ends: 25631 [2020-10-26 23:38:29,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:38:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25631 states. [2020-10-26 23:38:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25631 to 25592. [2020-10-26 23:38:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25592 states. [2020-10-26 23:38:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25592 states to 25592 states and 30252 transitions. [2020-10-26 23:38:29,640 INFO L78 Accepts]: Start accepts. Automaton has 25592 states and 30252 transitions. Word has length 689 [2020-10-26 23:38:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:38:29,641 INFO L481 AbstractCegarLoop]: Abstraction has 25592 states and 30252 transitions. [2020-10-26 23:38:29,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:38:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 25592 states and 30252 transitions. [2020-10-26 23:38:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2020-10-26 23:38:29,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:38:29,661 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:38:29,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:38:29,662 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:38:29,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:38:29,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1097828179, now seen corresponding path program 1 times [2020-10-26 23:38:29,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:38:29,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122091206] [2020-10-26 23:38:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:38:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:38:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:30,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:38:31,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking...