/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:25:50,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:25:50,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:25:51,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:25:51,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:25:51,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:25:51,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:25:51,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:25:51,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:25:51,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:25:51,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:25:51,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:25:51,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:25:51,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:25:51,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:25:51,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:25:51,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:25:51,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:25:51,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:25:51,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:25:51,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:25:51,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:25:51,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:25:51,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:25:51,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:25:51,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:25:51,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:25:51,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:25:51,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:25:51,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:25:51,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:25:51,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:25:51,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:25:51,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:25:51,131 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:25:51,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:25:51,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:25:51,132 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:25:51,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:25:51,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:25:51,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:25:51,135 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 [2020-10-28 13:25:51,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:25:51,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:25:51,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:25:51,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:25:51,193 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:25:51,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:25:51,193 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:25:51,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:25:51,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:25:51,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:25:51,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:25:51,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:25:51,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:25:51,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:25:51,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:25:51,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:25:51,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:25:51,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:25:51,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:25:51,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:25:51,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:25:51,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:25:51,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:25:51,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:25:51,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:25:51,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:25:51,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:25:51,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:25:51,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:25:51,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:25:51,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:25:51,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:25:51,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:25:51,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:25:51,625 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:25:51,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2020-10-28 13:25:51,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fed2bbd7c/8ee6f52fd1934d688a75cecf0c4cc9f9/FLAGda40b70df [2020-10-28 13:25:52,505 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:25:52,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label46.c [2020-10-28 13:25:52,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fed2bbd7c/8ee6f52fd1934d688a75cecf0c4cc9f9/FLAGda40b70df [2020-10-28 13:25:52,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fed2bbd7c/8ee6f52fd1934d688a75cecf0c4cc9f9 [2020-10-28 13:25:52,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:25:52,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:25:52,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:25:52,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:25:52,680 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:25:52,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:25:52" (1/1) ... [2020-10-28 13:25:52,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14a1cb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:52, skipping insertion in model container [2020-10-28 13:25:52,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:25:52" (1/1) ... [2020-10-28 13:25:52,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:25:52,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:25:53,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:25:53,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:25:53,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:25:53,811 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:25:53,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53 WrapperNode [2020-10-28 13:25:53,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:25:53,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:25:53,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:25:53,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:25:53,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53" (1/1) ... [2020-10-28 13:25:53,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53" (1/1) ... [2020-10-28 13:25:53,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53" (1/1) ... [2020-10-28 13:25:53,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53" (1/1) ... [2020-10-28 13:25:53,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53" (1/1) ... [2020-10-28 13:25:54,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53" (1/1) ... [2020-10-28 13:25:54,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53" (1/1) ... [2020-10-28 13:25:54,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:25:54,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:25:54,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:25:54,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:25:54,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:25:54,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:25:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:25:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:25:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:25:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:25:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:25:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:25:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:25:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:25:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:25:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:25:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:25:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:25:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:25:54,117 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:25:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:25:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:25:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:25:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:25:54,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:25:54,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:25:57,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:25:57,358 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:25:57,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:25:57 BoogieIcfgContainer [2020-10-28 13:25:57,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:25:57,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:25:57,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:25:57,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:25:57,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:25:52" (1/3) ... [2020-10-28 13:25:57,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@835608b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:25:57, skipping insertion in model container [2020-10-28 13:25:57,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:25:53" (2/3) ... [2020-10-28 13:25:57,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@835608b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:25:57, skipping insertion in model container [2020-10-28 13:25:57,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:25:57" (3/3) ... [2020-10-28 13:25:57,373 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label46.c [2020-10-28 13:25:57,387 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:25:57,394 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:25:57,410 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:25:57,444 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:25:57,444 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:25:57,444 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:25:57,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:25:57,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:25:57,445 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:25:57,445 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:25:57,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:25:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:25:57,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 13:25:57,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:25:57,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:25:57,484 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:25:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:25:57,491 INFO L82 PathProgramCache]: Analyzing trace with hash -717444172, now seen corresponding path program 1 times [2020-10-28 13:25:57,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:25:57,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187876732] [2020-10-28 13:25:57,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:25:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:58,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:58,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 13:25:58,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-28 13:25:58,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:58,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:25:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:25:58,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 13:25:58,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:25:58,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:25:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:25:58,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:25:58,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:25:58,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:25:58,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:25:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:25:58,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:25:58,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:25:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:25:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:25:58,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:25:58,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:25:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:25:58,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187876732] [2020-10-28 13:25:58,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:25:58,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:25:58,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766787981] [2020-10-28 13:25:58,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:25:58,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:25:58,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:25:58,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:25:58,529 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-28 13:25:58,693 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:26:06,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:06,853 INFO L93 Difference]: Finished difference Result 1520 states and 2854 transitions. [2020-10-28 13:26:06,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:26:06,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-28 13:26:06,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:06,887 INFO L225 Difference]: With dead ends: 1520 [2020-10-28 13:26:06,887 INFO L226 Difference]: Without dead ends: 1039 [2020-10-28 13:26:06,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-28 13:26:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-28 13:26:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-28 13:26:07,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1667 transitions. [2020-10-28 13:26:07,053 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1667 transitions. Word has length 23 [2020-10-28 13:26:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:07,054 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1667 transitions. [2020-10-28 13:26:07,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:26:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1667 transitions. [2020-10-28 13:26:07,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 13:26:07,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:07,065 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:07,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:26:07,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:07,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:07,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1055786606, now seen corresponding path program 1 times [2020-10-28 13:26:07,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:07,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325384124] [2020-10-28 13:26:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:07,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:07,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:09,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:12,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:12,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 13:26:12,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:26:12,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4934 [2020-10-28 13:26:12,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:12,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:12,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:12,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 13:26:12,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:26:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:26:12,283 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:26:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:12,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:12,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:12,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:12,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:26:12,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:12,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:12,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:12,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:12,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:12,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:12,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:12,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:26:12,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:12,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:26:12,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:12,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:12,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:26:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:12,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 13:26:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:12,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:12,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:26:12,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 13:26:12,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:12,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:12,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 13:26:12,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:12,742 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:26:12,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325384124] [2020-10-28 13:26:12,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:12,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:12,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134659632] [2020-10-28 13:26:12,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:12,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:12,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:12,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:12,750 INFO L87 Difference]: Start difference. First operand 1032 states and 1667 transitions. Second operand 7 states. [2020-10-28 13:26:21,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:21,582 INFO L93 Difference]: Finished difference Result 2773 states and 4447 transitions. [2020-10-28 13:26:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:26:21,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-10-28 13:26:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:21,600 INFO L225 Difference]: With dead ends: 2773 [2020-10-28 13:26:21,600 INFO L226 Difference]: Without dead ends: 1747 [2020-10-28 13:26:21,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:26:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2020-10-28 13:26:21,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1730. [2020-10-28 13:26:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1730 states. [2020-10-28 13:26:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2575 transitions. [2020-10-28 13:26:21,699 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2575 transitions. Word has length 190 [2020-10-28 13:26:21,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:21,703 INFO L481 AbstractCegarLoop]: Abstraction has 1730 states and 2575 transitions. [2020-10-28 13:26:21,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:21,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2575 transitions. [2020-10-28 13:26:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-28 13:26:21,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:21,725 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 13:26:21,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:26:21,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:21,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:21,726 INFO L82 PathProgramCache]: Analyzing trace with hash -751348365, now seen corresponding path program 1 times [2020-10-28 13:26:21,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:21,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486689670] [2020-10-28 13:26:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:21,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:23,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:24,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:26,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:26,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-28 13:26:26,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:26:26,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:26:26,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:26,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 13:26:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 13:26:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:26,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:26,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:26,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:26,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:26:26,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:26,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:26,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:26,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:26,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:27,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:27,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:26:27,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:27,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:26:27,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:27,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:27,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:27,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:26:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:27,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 13:26:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:27,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:27,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:26:27,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:27,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 13:26:27,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:27,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:27,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 13:26:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:27,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-28 13:26:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:27,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:27,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:27,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:26:27,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:26:27,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:27,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:26:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:27,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 121 proven. 91 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 13:26:27,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486689670] [2020-10-28 13:26:27,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:27,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:27,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262508358] [2020-10-28 13:26:27,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:27,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:27,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:27,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:27,570 INFO L87 Difference]: Start difference. First operand 1730 states and 2575 transitions. Second operand 7 states. [2020-10-28 13:26:33,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:33,699 INFO L93 Difference]: Finished difference Result 4172 states and 6376 transitions. [2020-10-28 13:26:33,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:26:33,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-28 13:26:33,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:33,719 INFO L225 Difference]: With dead ends: 4172 [2020-10-28 13:26:33,719 INFO L226 Difference]: Without dead ends: 2431 [2020-10-28 13:26:33,725 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 [2020-10-28 13:26:33,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2020-10-28 13:26:33,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2420. [2020-10-28 13:26:33,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-10-28 13:26:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 2793 transitions. [2020-10-28 13:26:33,806 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 2793 transitions. Word has length 300 [2020-10-28 13:26:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:33,807 INFO L481 AbstractCegarLoop]: Abstraction has 2420 states and 2793 transitions. [2020-10-28 13:26:33,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:33,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 2793 transitions. [2020-10-28 13:26:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-28 13:26:33,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:33,814 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:33,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:26:33,815 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:33,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1508969923, now seen corresponding path program 1 times [2020-10-28 13:26:33,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:33,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104043818] [2020-10-28 13:26:33,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:35,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:35,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:38,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:38,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-28 13:26:38,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:26:38,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-28 13:26:38,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:38,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:26:38,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 13:26:38,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:39,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:39,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:39,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:39,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:39,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:39,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:26:39,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:39,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:39,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:26:39,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:39,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:39,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:26:39,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:39,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 13:26:39,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:39,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:39,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:26:39,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 13:26:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:39,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:39,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:26:39,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:26:39,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:39,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:26:39,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:39,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-28 13:26:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:39,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:39,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:26:39,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:26:39,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:39,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:26:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:39,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 45 proven. 192 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-28 13:26:39,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104043818] [2020-10-28 13:26:39,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:39,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:39,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976212455] [2020-10-28 13:26:39,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:39,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:39,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:39,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:39,723 INFO L87 Difference]: Start difference. First operand 2420 states and 2793 transitions. Second operand 7 states. [2020-10-28 13:26:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:43,844 INFO L93 Difference]: Finished difference Result 4850 states and 5617 transitions. [2020-10-28 13:26:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:26:43,845 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 340 [2020-10-28 13:26:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:43,857 INFO L225 Difference]: With dead ends: 4850 [2020-10-28 13:26:43,857 INFO L226 Difference]: Without dead ends: 2440 [2020-10-28 13:26:43,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:26:43,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2020-10-28 13:26:43,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2084. [2020-10-28 13:26:43,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2084 states. [2020-10-28 13:26:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2335 transitions. [2020-10-28 13:26:43,927 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2335 transitions. Word has length 340 [2020-10-28 13:26:43,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:43,927 INFO L481 AbstractCegarLoop]: Abstraction has 2084 states and 2335 transitions. [2020-10-28 13:26:43,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2335 transitions. [2020-10-28 13:26:43,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-28 13:26:43,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:43,938 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:26:43,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:26:43,938 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:43,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:43,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2100502818, now seen corresponding path program 1 times [2020-10-28 13:26:43,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:43,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194948887] [2020-10-28 13:26:43,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:44,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:44,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:44,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:48,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:48,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:49,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:49,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 487 [2020-10-28 13:26:49,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:26:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 13:26:49,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:49,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:26:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:26:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 13:26:49,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:26:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:49,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:49,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:49,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:26:49,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:49,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:26:49,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:49,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:26:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:26:49,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:26:49,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:49,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:26:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:49,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:49,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:26:49,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 13:26:49,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:49,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:26:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:26:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:26:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:49,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 13:26:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:49,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:49,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:26:49,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:49,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:26:49,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:49,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:49,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:26:49,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:49,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:26:49,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-28 13:26:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:49,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:49,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:26:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:26:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:49,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:26:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:26:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-28 13:26:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:50,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:26:50,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:26:50,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:26:50,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:26:50,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:26:50,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:26:50,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:26:50,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:26:50,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:26:50,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:26:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 60 proven. 302 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2020-10-28 13:26:50,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194948887] [2020-10-28 13:26:50,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:26:50,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:26:50,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724340683] [2020-10-28 13:26:50,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:26:50,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:26:50,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:26:50,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:26:50,608 INFO L87 Difference]: Start difference. First operand 2084 states and 2335 transitions. Second operand 7 states. [2020-10-28 13:26:54,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:26:54,863 INFO L93 Difference]: Finished difference Result 4551 states and 5092 transitions. [2020-10-28 13:26:54,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:26:54,864 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 469 [2020-10-28 13:26:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:26:54,876 INFO L225 Difference]: With dead ends: 4551 [2020-10-28 13:26:54,876 INFO L226 Difference]: Without dead ends: 2473 [2020-10-28 13:26:54,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:26:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2020-10-28 13:26:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2431. [2020-10-28 13:26:54,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-10-28 13:26:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 2689 transitions. [2020-10-28 13:26:54,953 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 2689 transitions. Word has length 469 [2020-10-28 13:26:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:26:54,954 INFO L481 AbstractCegarLoop]: Abstraction has 2431 states and 2689 transitions. [2020-10-28 13:26:54,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:26:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 2689 transitions. [2020-10-28 13:26:54,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2020-10-28 13:26:54,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:26:54,976 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:26:54,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:26:54,977 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:26:54,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:26:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash 809115135, now seen corresponding path program 1 times [2020-10-28 13:26:54,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:26:54,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897598355] [2020-10-28 13:26:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:26:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:26:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:55,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:26:55,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:00,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:00,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 728 [2020-10-28 13:27:00,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:27:00,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 13:27:00,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:00,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:27:00,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:27:00,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:00,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:00,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:00,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:00,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:00,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:00,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:27:00,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:00,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:00,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:00,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:00,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:00,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:00,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:00,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:27:00,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-28 13:27:00,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:00,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:27:00,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:00,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:27:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:00,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:00,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:27:00,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:00,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 13:27:00,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:00,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:00,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:00,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:00,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:27:00,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:01,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-28 13:27:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:01,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:01,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:27:01,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:01,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:27:01,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:01,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:01,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:27:01,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:01,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-28 13:27:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:01,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:01,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:01,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:27:01,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:27:01,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:01,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:27:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-28 13:27:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:01,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:01,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:01,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:27:01,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:01,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:27:01,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:01,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:01,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:01,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:27:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1132 backedges. 213 proven. 310 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2020-10-28 13:27:02,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897598355] [2020-10-28 13:27:02,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:02,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:02,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003235252] [2020-10-28 13:27:02,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:02,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:02,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:02,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:02,253 INFO L87 Difference]: Start difference. First operand 2431 states and 2689 transitions. Second operand 7 states. [2020-10-28 13:27:06,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:06,856 INFO L93 Difference]: Finished difference Result 6257 states and 7086 transitions. [2020-10-28 13:27:06,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:27:06,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 708 [2020-10-28 13:27:06,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:06,875 INFO L225 Difference]: With dead ends: 6257 [2020-10-28 13:27:06,876 INFO L226 Difference]: Without dead ends: 4169 [2020-10-28 13:27:06,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:27:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4169 states. [2020-10-28 13:27:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4169 to 3814. [2020-10-28 13:27:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3814 states. [2020-10-28 13:27:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3814 states to 3814 states and 4166 transitions. [2020-10-28 13:27:06,992 INFO L78 Accepts]: Start accepts. Automaton has 3814 states and 4166 transitions. Word has length 708 [2020-10-28 13:27:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:06,993 INFO L481 AbstractCegarLoop]: Abstraction has 3814 states and 4166 transitions. [2020-10-28 13:27:06,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3814 states and 4166 transitions. [2020-10-28 13:27:07,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2020-10-28 13:27:07,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:07,025 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 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] [2020-10-28 13:27:07,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:27:07,026 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:07,027 INFO L82 PathProgramCache]: Analyzing trace with hash 198457432, now seen corresponding path program 1 times [2020-10-28 13:27:07,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:07,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913504095] [2020-10-28 13:27:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:07,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:07,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:08,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:12,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:12,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 850 [2020-10-28 13:27:12,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:27:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 13:27:12,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:12,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:27:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:27:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:12,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:12,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:12,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:12,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:12,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:27:12,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:12,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:12,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:12,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:12,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:12,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:12,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:12,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:27:12,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:12,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:27:12,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:12,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:12,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:27:12,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:12,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:27:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:12,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:12,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:12,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:27:12,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:12,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 13:27:12,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:12,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:12,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:12,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:27:12,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:12,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-28 13:27:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:12,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:12,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:27:12,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:12,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:27:12,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:12,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:27:12,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:12,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:12,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-28 13:27:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:12,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:12,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:27:12,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:27:12,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:12,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:27:12,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:12,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:13,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-10-28 13:27:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:13,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:13,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:27:13,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:27:13,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:13,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:27:13,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:13,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2020-10-28 13:27:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:13,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:13,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:27:13,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:13,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:27:13,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:13,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:27:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1685 backedges. 232 proven. 419 refuted. 0 times theorem prover too weak. 1034 trivial. 0 not checked. [2020-10-28 13:27:13,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913504095] [2020-10-28 13:27:13,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:13,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:13,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927660349] [2020-10-28 13:27:13,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:13,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:13,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:13,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:13,514 INFO L87 Difference]: Start difference. First operand 3814 states and 4166 transitions. Second operand 7 states. [2020-10-28 13:27:18,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:18,041 INFO L93 Difference]: Finished difference Result 9699 states and 10798 transitions. [2020-10-28 13:27:18,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:27:18,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 828 [2020-10-28 13:27:18,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:18,071 INFO L225 Difference]: With dead ends: 9699 [2020-10-28 13:27:18,071 INFO L226 Difference]: Without dead ends: 6228 [2020-10-28 13:27:18,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:27:18,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2020-10-28 13:27:18,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 5869. [2020-10-28 13:27:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5869 states. [2020-10-28 13:27:18,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5869 states to 5869 states and 6356 transitions. [2020-10-28 13:27:18,248 INFO L78 Accepts]: Start accepts. Automaton has 5869 states and 6356 transitions. Word has length 828 [2020-10-28 13:27:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:18,249 INFO L481 AbstractCegarLoop]: Abstraction has 5869 states and 6356 transitions. [2020-10-28 13:27:18,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5869 states and 6356 transitions. [2020-10-28 13:27:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2020-10-28 13:27:18,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:18,289 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:27:18,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:27:18,290 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:18,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:18,291 INFO L82 PathProgramCache]: Analyzing trace with hash 80632084, now seen corresponding path program 1 times [2020-10-28 13:27:18,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:18,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122644430] [2020-10-28 13:27:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:18,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:18,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:19,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:23,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:23,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1031 [2020-10-28 13:27:23,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:27:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 13:27:23,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:23,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 607 [2020-10-28 13:27:23,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-28 13:27:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:23,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:23,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:23,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:23,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:23,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:23,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:27:23,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:23,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:23,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:23,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:23,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:23,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:23,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:27:23,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:27:23,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:23,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:23,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:27:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:23,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:23,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:27:23,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:23,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:27:23,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:23,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:23,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:23,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:23,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:23,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:27:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:23,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:23,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:23,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:27:23,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:27:23,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:23,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:23,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-28 13:27:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:24,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:24,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:27:24,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:24,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 13:27:24,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:24,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:24,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:24,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:24,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:27:24,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:24,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:27:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:24,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:24,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:24,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:27:24,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-28 13:27:24,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:24,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:24,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-28 13:27:24,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:27:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:24,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:24,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:24,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:27:24,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:27:24,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:24,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:27:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:24,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:27:24,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:24,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 900 [2020-10-28 13:27:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:24,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:24,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:27:24,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:24,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:27:24,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:24,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:27:24,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:24,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 700 proven. 91 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2020-10-28 13:27:25,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122644430] [2020-10-28 13:27:25,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:25,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:27:25,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126226502] [2020-10-28 13:27:25,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:27:25,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:25,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:27:25,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:27:25,404 INFO L87 Difference]: Start difference. First operand 5869 states and 6356 transitions. Second operand 8 states. [2020-10-28 13:27:30,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:30,534 INFO L93 Difference]: Finished difference Result 13118 states and 14332 transitions. [2020-10-28 13:27:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:27:30,536 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1007 [2020-10-28 13:27:30,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:30,565 INFO L225 Difference]: With dead ends: 13118 [2020-10-28 13:27:30,566 INFO L226 Difference]: Without dead ends: 7255 [2020-10-28 13:27:30,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:27:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7255 states. [2020-10-28 13:27:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7255 to 7233. [2020-10-28 13:27:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7233 states. [2020-10-28 13:27:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 7790 transitions. [2020-10-28 13:27:30,749 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 7790 transitions. Word has length 1007 [2020-10-28 13:27:30,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:30,750 INFO L481 AbstractCegarLoop]: Abstraction has 7233 states and 7790 transitions. [2020-10-28 13:27:30,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:27:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 7790 transitions. [2020-10-28 13:27:30,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2020-10-28 13:27:30,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:30,774 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:30,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:27:30,774 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:30,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:30,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1312414344, now seen corresponding path program 1 times [2020-10-28 13:27:30,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:30,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706831459] [2020-10-28 13:27:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:31,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:31,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:31,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:36,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:36,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1149 [2020-10-28 13:27:36,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:27:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 13:27:36,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:36,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 725 [2020-10-28 13:27:36,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 303 [2020-10-28 13:27:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:36,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:36,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:36,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:27:36,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:36,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:36,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:36,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:36,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:36,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:27:36,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:27:36,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:36,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:36,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:36,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:27:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:36,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:36,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:36,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:27:36,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:27:36,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:36,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:36,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:36,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:27:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:36,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:36,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:27:36,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:36,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:27:36,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:36,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:36,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:36,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:27:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:36,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:36,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:27:36,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:36,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:27:36,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:36,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:36,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:27:36,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:36,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-28 13:27:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:36,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:37,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:37,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-28 13:27:37,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-10-28 13:27:37,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:37,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:27:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 304 [2020-10-28 13:27:37,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:37,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:27:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:37,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:37,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 13:27:37,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:37,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:27:37,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:37,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:27:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:37,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:27:37,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:37,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1018 [2020-10-28 13:27:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:37,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:37,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 13:27:37,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:27:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:37,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 13:27:37,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1978 backedges. 818 proven. 91 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2020-10-28 13:27:38,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706831459] [2020-10-28 13:27:38,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:38,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:27:38,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535406443] [2020-10-28 13:27:38,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:27:38,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:38,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:27:38,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:27:38,417 INFO L87 Difference]: Start difference. First operand 7233 states and 7790 transitions. Second operand 8 states. [2020-10-28 13:27:44,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:44,458 INFO L93 Difference]: Finished difference Result 17545 states and 19166 transitions. [2020-10-28 13:27:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:27:44,459 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1125 [2020-10-28 13:27:44,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:44,491 INFO L225 Difference]: With dead ends: 17545 [2020-10-28 13:27:44,491 INFO L226 Difference]: Without dead ends: 10318 [2020-10-28 13:27:44,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:27:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2020-10-28 13:27:44,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 9961. [2020-10-28 13:27:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9961 states. [2020-10-28 13:27:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 10816 transitions. [2020-10-28 13:27:44,714 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 10816 transitions. Word has length 1125 [2020-10-28 13:27:44,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:44,716 INFO L481 AbstractCegarLoop]: Abstraction has 9961 states and 10816 transitions. [2020-10-28 13:27:44,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:27:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 10816 transitions. [2020-10-28 13:27:44,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1315 [2020-10-28 13:27:44,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:44,751 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-28 13:27:44,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:27:44,751 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:44,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:44,752 INFO L82 PathProgramCache]: Analyzing trace with hash -595247204, now seen corresponding path program 1 times [2020-10-28 13:27:44,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:44,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469751357] [2020-10-28 13:27:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:45,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:45,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:50,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1336 [2020-10-28 13:27:50,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:27:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 13:27:50,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:50,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 705 [2020-10-28 13:27:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:27:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:27:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:50,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:50,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:27:50,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:50,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:27:50,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:50,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:50,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:27:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:50,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:50,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:27:50,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:27:50,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:50,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:50,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:50,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:50,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:27:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:50,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:50,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:27:50,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:27:50,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:50,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:50,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:27:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:50,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:50,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:27:50,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:27:50,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:50,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:50,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:27:50,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:27:50,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:27:50,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:50,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-10-28 13:27:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:50,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:27:51,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-28 13:27:51,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:51,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:27:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:27:51,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:27:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 972 [2020-10-28 13:27:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:51,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:51,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:51,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:27:51,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:51,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:27:51,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:51,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:51,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:51,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:27:51,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:51,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:51,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1084 [2020-10-28 13:27:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:51,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:51,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:27:51,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:27:51,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:27:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:27:51,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:27:51,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:27:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:27:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 13:27:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:27:51,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:27:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2818 backedges. 806 proven. 323 refuted. 0 times theorem prover too weak. 1689 trivial. 0 not checked. [2020-10-28 13:27:53,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469751357] [2020-10-28 13:27:53,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:27:53,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:27:53,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31857993] [2020-10-28 13:27:53,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:27:53,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:27:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:27:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:27:53,140 INFO L87 Difference]: Start difference. First operand 9961 states and 10816 transitions. Second operand 7 states. [2020-10-28 13:27:57,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:27:57,945 INFO L93 Difference]: Finished difference Result 20273 states and 22013 transitions. [2020-10-28 13:27:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:27:57,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1314 [2020-10-28 13:27:57,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:27:57,979 INFO L225 Difference]: With dead ends: 20273 [2020-10-28 13:27:57,979 INFO L226 Difference]: Without dead ends: 10318 [2020-10-28 13:27:57,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:27:58,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2020-10-28 13:27:58,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 9961. [2020-10-28 13:27:58,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9961 states. [2020-10-28 13:27:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9961 states to 9961 states and 10808 transitions. [2020-10-28 13:27:58,218 INFO L78 Accepts]: Start accepts. Automaton has 9961 states and 10808 transitions. Word has length 1314 [2020-10-28 13:27:58,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:27:58,220 INFO L481 AbstractCegarLoop]: Abstraction has 9961 states and 10808 transitions. [2020-10-28 13:27:58,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:27:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 9961 states and 10808 transitions. [2020-10-28 13:27:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1333 [2020-10-28 13:27:58,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:27:58,257 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:27:58,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:27:58,257 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:27:58,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:27:58,258 INFO L82 PathProgramCache]: Analyzing trace with hash -250112087, now seen corresponding path program 1 times [2020-10-28 13:27:58,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:27:58,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354095984] [2020-10-28 13:27:58,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:27:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:27:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:27:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:03,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:03,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1356 [2020-10-28 13:28:03,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:28:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:28:03,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:03,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 725 [2020-10-28 13:28:03,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:28:03,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:03,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:03,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:03,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:03,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:03,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:28:03,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:03,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:03,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:03,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:28:03,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:28:03,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:03,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:03,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:03,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:03,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:28:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:03,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:03,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:28:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:28:03,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:03,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:03,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:04,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:28:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:04,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:04,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:28:04,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:04,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:28:04,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:04,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:04,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:04,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:04,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:28:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:04,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:04,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:28:04,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:28:04,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:04,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:04,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:28:04,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:04,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-28 13:28:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:04,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:04,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:04,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:28:04,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:04,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-28 13:28:04,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:04,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:04,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:04,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:28:04,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:05,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 990 [2020-10-28 13:28:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:05,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:05,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:05,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:28:05,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:28:05,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:05,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:28:05,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:05,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1102 [2020-10-28 13:28:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:05,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:05,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:28:05,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:28:05,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:05,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 13:28:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3043 backedges. 849 proven. 323 refuted. 0 times theorem prover too weak. 1871 trivial. 0 not checked. [2020-10-28 13:28:07,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354095984] [2020-10-28 13:28:07,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:07,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:07,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466758048] [2020-10-28 13:28:07,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:07,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:07,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:07,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:07,130 INFO L87 Difference]: Start difference. First operand 9961 states and 10808 transitions. Second operand 7 states. [2020-10-28 13:28:09,576 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:28:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:12,195 INFO L93 Difference]: Finished difference Result 20614 states and 22412 transitions. [2020-10-28 13:28:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:28:12,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1332 [2020-10-28 13:28:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:12,230 INFO L225 Difference]: With dead ends: 20614 [2020-10-28 13:28:12,231 INFO L226 Difference]: Without dead ends: 10659 [2020-10-28 13:28:12,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:28:12,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10659 states. [2020-10-28 13:28:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10659 to 10641. [2020-10-28 13:28:12,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10641 states. [2020-10-28 13:28:12,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10641 states to 10641 states and 11501 transitions. [2020-10-28 13:28:12,452 INFO L78 Accepts]: Start accepts. Automaton has 10641 states and 11501 transitions. Word has length 1332 [2020-10-28 13:28:12,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:12,453 INFO L481 AbstractCegarLoop]: Abstraction has 10641 states and 11501 transitions. [2020-10-28 13:28:12,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:12,454 INFO L276 IsEmpty]: Start isEmpty. Operand 10641 states and 11501 transitions. [2020-10-28 13:28:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1451 [2020-10-28 13:28:12,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:12,489 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:12,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:28:12,490 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:12,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2081500075, now seen corresponding path program 1 times [2020-10-28 13:28:12,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:12,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15140083] [2020-10-28 13:28:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:13,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:14,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:15,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:15,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:17,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:17,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1474 [2020-10-28 13:28:17,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:28:17,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5086 [2020-10-28 13:28:17,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:17,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 579 [2020-10-28 13:28:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:28:17,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:18,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:18,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:18,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:18,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:18,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:28:18,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:18,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:18,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:18,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:18,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:18,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:28:18,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:18,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:28:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:18,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:18,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:18,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:28:18,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:28:18,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:18,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:18,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:18,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:28:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:18,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:18,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:18,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:28:18,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:28:18,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:18,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:28:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:18,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:18,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:28:18,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 13:28:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:18,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-28 13:28:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:19,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 835 [2020-10-28 13:28:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:28:19,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1108 [2020-10-28 13:28:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:19,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:19,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:19,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:28:19,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:19,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:28:19,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:19,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:19,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:19,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:28:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:19,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1220 [2020-10-28 13:28:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:19,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:19,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:19,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:28:19,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:19,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:28:19,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:19,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:19,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 13:28:19,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:19,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3440 backedges. 707 proven. 582 refuted. 0 times theorem prover too weak. 2151 trivial. 0 not checked. [2020-10-28 13:28:21,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15140083] [2020-10-28 13:28:21,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:21,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:21,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145316784] [2020-10-28 13:28:21,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:21,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:21,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:21,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:21,521 INFO L87 Difference]: Start difference. First operand 10641 states and 11501 transitions. Second operand 7 states. [2020-10-28 13:28:23,735 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:28:25,401 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:28:26,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:26,649 INFO L93 Difference]: Finished difference Result 22303 states and 24161 transitions. [2020-10-28 13:28:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:28:26,657 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1450 [2020-10-28 13:28:26,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:26,706 INFO L225 Difference]: With dead ends: 22303 [2020-10-28 13:28:26,707 INFO L226 Difference]: Without dead ends: 11668 [2020-10-28 13:28:26,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:28:26,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11668 states. [2020-10-28 13:28:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11668 to 11658. [2020-10-28 13:28:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11658 states. [2020-10-28 13:28:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11658 states to 11658 states and 12552 transitions. [2020-10-28 13:28:26,935 INFO L78 Accepts]: Start accepts. Automaton has 11658 states and 12552 transitions. Word has length 1450 [2020-10-28 13:28:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:26,936 INFO L481 AbstractCegarLoop]: Abstraction has 11658 states and 12552 transitions. [2020-10-28 13:28:26,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:26,936 INFO L276 IsEmpty]: Start isEmpty. Operand 11658 states and 12552 transitions. [2020-10-28 13:28:26,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1452 [2020-10-28 13:28:26,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:26,975 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:26,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:28:26,975 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:26,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1594956421, now seen corresponding path program 1 times [2020-10-28 13:28:26,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:26,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622083576] [2020-10-28 13:28:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:28,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:29,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:32,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:32,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1475 [2020-10-28 13:28:32,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:28:32,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:28:32,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:32,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:32,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:32,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 844 [2020-10-28 13:28:32,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:28:32,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:32,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:32,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:32,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:32,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:28:32,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:32,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:32,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:32,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:32,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:32,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:32,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:28:32,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:32,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:28:32,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:32,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:32,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:32,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:32,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:32,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:28:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:32,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:28:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:32,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:32,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:32,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:28:32,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:28:32,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:32,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:28:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:33,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:33,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:33,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:28:33,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:33,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-28 13:28:33,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:33,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:33,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-28 13:28:33,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 836 [2020-10-28 13:28:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:33,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:33,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:33,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:28:33,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 13:28:33,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:33,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:28:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:33,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1109 [2020-10-28 13:28:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:33,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:33,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:33,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:28:33,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:33,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:28:33,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:33,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:28:33,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:33,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1221 [2020-10-28 13:28:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:34,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:34,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:28:34,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:28:34,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:34,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 13:28:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:34,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3446 backedges. 968 proven. 323 refuted. 0 times theorem prover too weak. 2155 trivial. 0 not checked. [2020-10-28 13:28:35,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622083576] [2020-10-28 13:28:35,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:35,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:35,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130253760] [2020-10-28 13:28:35,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:35,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:35,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:35,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:35,670 INFO L87 Difference]: Start difference. First operand 11658 states and 12552 transitions. Second operand 7 states. [2020-10-28 13:28:37,300 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 13:28:42,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:42,241 INFO L93 Difference]: Finished difference Result 23659 states and 25459 transitions. [2020-10-28 13:28:42,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:28:42,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1451 [2020-10-28 13:28:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:42,272 INFO L225 Difference]: With dead ends: 23659 [2020-10-28 13:28:42,272 INFO L226 Difference]: Without dead ends: 12007 [2020-10-28 13:28:42,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:28:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12007 states. [2020-10-28 13:28:42,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12007 to 11658. [2020-10-28 13:28:42,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11658 states. [2020-10-28 13:28:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11658 states to 11658 states and 12538 transitions. [2020-10-28 13:28:42,496 INFO L78 Accepts]: Start accepts. Automaton has 11658 states and 12538 transitions. Word has length 1451 [2020-10-28 13:28:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:42,498 INFO L481 AbstractCegarLoop]: Abstraction has 11658 states and 12538 transitions. [2020-10-28 13:28:42,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 11658 states and 12538 transitions. [2020-10-28 13:28:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1493 [2020-10-28 13:28:42,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:42,551 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:28:42,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:28:42,552 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:42,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1685243208, now seen corresponding path program 1 times [2020-10-28 13:28:42,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:42,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052334498] [2020-10-28 13:28:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:43,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:43,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:43,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:45,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1518 [2020-10-28 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 887 [2020-10-28 13:28:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:28:47,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:28:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:48,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:48,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:28:48,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:48,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:28:48,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:48,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:48,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:48,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:28:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:48,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:48,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:28:48,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:28:48,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:48,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:48,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:28:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:48,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:28:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:28:48,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:48,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:48,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:48,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:48,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:28:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:48,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:48,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:28:48,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:28:48,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:48,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:48,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:48,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:48,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:28:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:48,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:48,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:28:48,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:48,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:28:48,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:48,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:48,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-28 13:28:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:48,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:48,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:48,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:28:48,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:48,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:28:48,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:48,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:48,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:28:48,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:28:48,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-28 13:28:48,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2020-10-28 13:28:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:48,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:28:49,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:49,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1150 [2020-10-28 13:28:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:49,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:49,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:28:49,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:49,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:28:49,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:49,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:49,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:28:49,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1262 [2020-10-28 13:28:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:49,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:28:49,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:28:49,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:28:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:28:49,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:28:49,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:28:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:28:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 13:28:49,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:28:49,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:28:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3997 backedges. 1034 proven. 323 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2020-10-28 13:28:51,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052334498] [2020-10-28 13:28:51,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:28:51,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:28:51,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146687449] [2020-10-28 13:28:51,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:28:51,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:28:51,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:28:51,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:28:51,486 INFO L87 Difference]: Start difference. First operand 11658 states and 12538 transitions. Second operand 7 states. [2020-10-28 13:28:53,715 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:28:54,918 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:28:56,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:28:56,681 INFO L93 Difference]: Finished difference Result 24337 states and 26240 transitions. [2020-10-28 13:28:56,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:28:56,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1492 [2020-10-28 13:28:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:28:56,716 INFO L225 Difference]: With dead ends: 24337 [2020-10-28 13:28:56,716 INFO L226 Difference]: Without dead ends: 12685 [2020-10-28 13:28:56,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:28:56,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12685 states. [2020-10-28 13:28:56,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12685 to 12675. [2020-10-28 13:28:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12675 states. [2020-10-28 13:28:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12675 states to 12675 states and 13513 transitions. [2020-10-28 13:28:56,975 INFO L78 Accepts]: Start accepts. Automaton has 12675 states and 13513 transitions. Word has length 1492 [2020-10-28 13:28:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:28:56,977 INFO L481 AbstractCegarLoop]: Abstraction has 12675 states and 13513 transitions. [2020-10-28 13:28:56,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:28:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 12675 states and 13513 transitions. [2020-10-28 13:28:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1555 [2020-10-28 13:28:57,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:28:57,019 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:28:57,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:28:57,020 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:28:57,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:28:57,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1243808836, now seen corresponding path program 1 times [2020-10-28 13:28:57,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:28:57,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216819493] [2020-10-28 13:28:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:28:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:28:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:58,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:58,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:28:58,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:02,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:02,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1580 [2020-10-28 13:29:02,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:29:02,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 13:29:02,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:02,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:02,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 697 [2020-10-28 13:29:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:29:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:02,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:02,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:02,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:02,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:02,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:02,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:29:02,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:02,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:02,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:02,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:02,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:02,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:02,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:29:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:02,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 13:29:02,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:02,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:02,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:02,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:29:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:02,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:02,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:29:02,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:29:02,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:02,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:03,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:29:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:03,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:03,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:29:03,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:29:03,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:03,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:03,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:03,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:03,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:29:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:03,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:03,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:29:03,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:29:03,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:03,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:29:03,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:03,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-28 13:29:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:03,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:03,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:03,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:29:03,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:03,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-28 13:29:03,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:03,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:03,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:29:03,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:03,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 939 [2020-10-28 13:29:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:03,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:29:03,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:29:03,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:03,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:29:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:03,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1212 [2020-10-28 13:29:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:03,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:03,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:03,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:29:03,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:29:03,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:03,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:29:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:03,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:03,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1324 [2020-10-28 13:29:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:04,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:04,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:29:04,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:04,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:29:04,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:04,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 13:29:04,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:04,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4206 backedges. 852 proven. 570 refuted. 0 times theorem prover too weak. 2784 trivial. 0 not checked. [2020-10-28 13:29:05,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216819493] [2020-10-28 13:29:05,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:05,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:05,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246886341] [2020-10-28 13:29:05,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:05,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:05,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:05,792 INFO L87 Difference]: Start difference. First operand 12675 states and 13513 transitions. Second operand 7 states. [2020-10-28 13:29:08,230 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 13:29:08,535 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:29:11,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:11,464 INFO L93 Difference]: Finished difference Result 26717 states and 28539 transitions. [2020-10-28 13:29:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:29:11,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1554 [2020-10-28 13:29:11,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:11,494 INFO L225 Difference]: With dead ends: 26717 [2020-10-28 13:29:11,495 INFO L226 Difference]: Without dead ends: 14048 [2020-10-28 13:29:11,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:29:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14048 states. [2020-10-28 13:29:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14048 to 14038. [2020-10-28 13:29:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14038 states. [2020-10-28 13:29:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14038 states to 14038 states and 14945 transitions. [2020-10-28 13:29:11,765 INFO L78 Accepts]: Start accepts. Automaton has 14038 states and 14945 transitions. Word has length 1554 [2020-10-28 13:29:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:11,766 INFO L481 AbstractCegarLoop]: Abstraction has 14038 states and 14945 transitions. [2020-10-28 13:29:11,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 14038 states and 14945 transitions. [2020-10-28 13:29:11,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1632 [2020-10-28 13:29:11,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:11,811 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:29:11,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:29:11,811 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:11,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1492503528, now seen corresponding path program 1 times [2020-10-28 13:29:11,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:11,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95735931] [2020-10-28 13:29:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:13,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:13,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:17,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:17,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1659 [2020-10-28 13:29:17,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:29:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5165 [2020-10-28 13:29:17,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:17,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1025 [2020-10-28 13:29:17,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-28 13:29:17,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:17,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:17,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:17,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:17,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:17,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:17,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:29:17,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:17,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:17,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:17,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:17,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:17,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:17,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:17,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:29:17,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:29:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:17,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:17,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:29:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:17,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:17,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:29:17,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:29:17,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:17,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:17,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:17,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-28 13:29:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:18,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:29:18,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:29:18,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:18,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-28 13:29:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:18,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:29:18,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:18,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:29:18,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:18,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:18,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-10-28 13:29:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:18,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:29:18,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:18,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 13:29:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:18,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 321 [2020-10-28 13:29:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:29:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:18,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:18,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:29:18,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:29:18,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:18,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:18,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 13:29:18,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:18,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1016 [2020-10-28 13:29:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:19,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:19,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:29:19,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-28 13:29:19,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:19,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:29:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:19,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1289 [2020-10-28 13:29:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:19,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:19,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:19,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:29:19,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:19,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:29:19,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:19,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:29:19,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:19,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:19,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1401 [2020-10-28 13:29:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:19,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:19,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-28 13:29:19,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:19,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:29:19,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:19,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:19,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:19,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-10-28 13:29:19,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:19,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4229 backedges. 1119 proven. 323 refuted. 0 times theorem prover too weak. 2787 trivial. 0 not checked. [2020-10-28 13:29:21,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95735931] [2020-10-28 13:29:21,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:21,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:29:21,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986666687] [2020-10-28 13:29:21,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:29:21,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:21,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:29:21,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:29:21,501 INFO L87 Difference]: Start difference. First operand 14038 states and 14945 transitions. Second operand 8 states. [2020-10-28 13:29:23,606 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65