/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:46:25,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:46:25,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:46:25,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:46:25,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:46:25,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:46:25,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:46:25,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:46:25,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:46:25,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:46:25,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:46:25,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:46:25,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:46:25,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:46:25,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:46:25,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:46:25,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:46:25,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:46:25,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:46:25,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:46:25,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:46:25,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:46:25,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:46:25,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:46:25,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:46:25,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:46:25,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:46:25,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:46:25,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:46:25,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:46:25,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:46:25,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:46:25,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:46:25,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:46:25,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:46:25,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:46:25,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:46:25,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:46:25,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:46:25,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:46:25,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:46:25,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:46:25,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:46:25,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:46:25,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:46:25,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:46:25,268 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:46:25,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:46:25,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:46:25,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:46:25,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:46:25,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:46:25,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:46:25,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:46:25,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:46:25,270 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:46:25,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:46:25,270 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:46:25,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:46:25,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:46:25,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:46:25,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:46:25,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:46:25,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:46:25,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:46:25,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:46:25,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:46:25,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:46:25,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:46:25,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:46:25,273 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:46:25,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:46:25,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:46:25,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:46:25,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:46:25,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:46:25,826 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:46:25,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28.c [2020-10-29 06:46:25,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdc0506b0/5cd336a50f544f989f44251c61b44540/FLAG2510b08f7 [2020-10-29 06:46:26,764 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:46:26,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label28.c [2020-10-29 06:46:26,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdc0506b0/5cd336a50f544f989f44251c61b44540/FLAG2510b08f7 [2020-10-29 06:46:26,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdc0506b0/5cd336a50f544f989f44251c61b44540 [2020-10-29 06:46:26,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:46:26,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:46:26,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:46:26,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:46:26,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:46:26,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:46:26" (1/1) ... [2020-10-29 06:46:26,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ffe4bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:26, skipping insertion in model container [2020-10-29 06:46:26,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:46:26" (1/1) ... [2020-10-29 06:46:27,003 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:46:27,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:46:27,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:46:27,785 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:46:27,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:46:28,013 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:46:28,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28 WrapperNode [2020-10-29 06:46:28,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:46:28,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:46:28,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:46:28,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:46:28,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28" (1/1) ... [2020-10-29 06:46:28,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28" (1/1) ... [2020-10-29 06:46:28,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28" (1/1) ... [2020-10-29 06:46:28,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28" (1/1) ... [2020-10-29 06:46:28,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28" (1/1) ... [2020-10-29 06:46:28,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28" (1/1) ... [2020-10-29 06:46:28,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28" (1/1) ... [2020-10-29 06:46:28,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:46:28,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:46:28,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:46:28,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:46:28,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:46:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:46:28,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:46:28,266 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:46:28,266 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:46:28,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:46:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:46:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:46:28,267 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:46:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:46:28,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:46:28,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:46:28,269 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:46:28,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:46:28,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:46:28,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:46:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:46:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:46:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:46:28,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:46:30,176 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:46:30,176 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:46:30,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:46:30 BoogieIcfgContainer [2020-10-29 06:46:30,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:46:30,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:46:30,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:46:30,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:46:30,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:46:26" (1/3) ... [2020-10-29 06:46:30,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a71362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:46:30, skipping insertion in model container [2020-10-29 06:46:30,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:46:28" (2/3) ... [2020-10-29 06:46:30,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a71362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:46:30, skipping insertion in model container [2020-10-29 06:46:30,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:46:30" (3/3) ... [2020-10-29 06:46:30,194 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label28.c [2020-10-29 06:46:30,206 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:46:30,212 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:46:30,228 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:46:30,261 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:46:30,262 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:46:30,262 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:46:30,262 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:46:30,263 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:46:30,263 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:46:30,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:46:30,263 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:46:30,292 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:46:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 06:46:30,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:30,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:30,303 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:30,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:30,311 INFO L82 PathProgramCache]: Analyzing trace with hash -471549154, now seen corresponding path program 1 times [2020-10-29 06:46:30,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:30,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454791888] [2020-10-29 06:46:30,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:30,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:31,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:31,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 06:46:31,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:31,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 764 [2020-10-29 06:46:31,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:31,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:31,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 06:46:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:46:31,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:31,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:31,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:31,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:31,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:31,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:46:31,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:31,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:31,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:31,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:31,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454791888] [2020-10-29 06:46:31,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:31,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:46:31,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266890106] [2020-10-29 06:46:31,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:46:31,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:31,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:46:31,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:46:31,622 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-29 06:46:35,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:35,609 INFO L93 Difference]: Finished difference Result 1003 states and 1799 transitions. [2020-10-29 06:46:35,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:46:35,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-29 06:46:35,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:35,643 INFO L225 Difference]: With dead ends: 1003 [2020-10-29 06:46:35,643 INFO L226 Difference]: Without dead ends: 639 [2020-10-29 06:46:35,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2020-10-29 06:46:35,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 622. [2020-10-29 06:46:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2020-10-29 06:46:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 951 transitions. [2020-10-29 06:46:35,787 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 951 transitions. Word has length 55 [2020-10-29 06:46:35,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:35,789 INFO L481 AbstractCegarLoop]: Abstraction has 622 states and 951 transitions. [2020-10-29 06:46:35,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:46:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 951 transitions. [2020-10-29 06:46:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 06:46:35,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:35,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:35,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:46:35,810 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:35,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:35,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1676767937, now seen corresponding path program 1 times [2020-10-29 06:46:35,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:35,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456854598] [2020-10-29 06:46:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:37,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:37,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:46:37,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:37,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1619 [2020-10-29 06:46:37,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:37,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:46:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:37,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:46:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:46:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:37,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:37,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:37,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:37,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:37,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:46:37,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:37,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:46:37,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:37,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:38,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:38,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:46:38,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:38,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 06:46:38,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:38,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 06:46:38,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:46:38,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456854598] [2020-10-29 06:46:38,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:46:38,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:46:38,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474942290] [2020-10-29 06:46:38,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:38,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:38,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:38,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:38,156 INFO L87 Difference]: Start difference. First operand 622 states and 951 transitions. Second operand 7 states. [2020-10-29 06:46:41,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:41,405 INFO L93 Difference]: Finished difference Result 1867 states and 2957 transitions. [2020-10-29 06:46:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:46:41,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-29 06:46:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:41,425 INFO L225 Difference]: With dead ends: 1867 [2020-10-29 06:46:41,426 INFO L226 Difference]: Without dead ends: 1251 [2020-10-29 06:46:41,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-10-29 06:46:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1218. [2020-10-29 06:46:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2020-10-29 06:46:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1705 transitions. [2020-10-29 06:46:41,537 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1705 transitions. Word has length 125 [2020-10-29 06:46:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:41,539 INFO L481 AbstractCegarLoop]: Abstraction has 1218 states and 1705 transitions. [2020-10-29 06:46:41,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1705 transitions. [2020-10-29 06:46:41,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-29 06:46:41,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:41,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:41,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:46:41,547 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:41,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:41,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1754818029, now seen corresponding path program 1 times [2020-10-29 06:46:41,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:41,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411779486] [2020-10-29 06:46:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:41,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 06:46:43,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:46:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1894 [2020-10-29 06:46:43,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:46:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:46:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-29 06:46:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:43,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:43,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:43,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:46:43,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:46:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:43,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:43,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:43,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:46:43,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:46:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 06:46:43,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:43,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:43,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:46:43,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:44,030 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:46:44,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411779486] [2020-10-29 06:46:44,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:44,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:46:44,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31551537] [2020-10-29 06:46:44,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:46:44,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:44,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:46:44,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:46:44,033 INFO L87 Difference]: Start difference. First operand 1218 states and 1705 transitions. Second operand 6 states. [2020-10-29 06:46:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:46,986 INFO L93 Difference]: Finished difference Result 3625 states and 5214 transitions. [2020-10-29 06:46:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:46:46,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-29 06:46:46,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:47,003 INFO L225 Difference]: With dead ends: 3625 [2020-10-29 06:46:47,003 INFO L226 Difference]: Without dead ends: 2413 [2020-10-29 06:46:47,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:46:47,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2020-10-29 06:46:47,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2208. [2020-10-29 06:46:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2208 states. [2020-10-29 06:46:47,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 2957 transitions. [2020-10-29 06:46:47,100 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 2957 transitions. Word has length 135 [2020-10-29 06:46:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:47,100 INFO L481 AbstractCegarLoop]: Abstraction has 2208 states and 2957 transitions. [2020-10-29 06:46:47,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:46:47,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 2957 transitions. [2020-10-29 06:46:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-29 06:46:47,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:47,107 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:47,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:46:47,107 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:47,108 INFO L82 PathProgramCache]: Analyzing trace with hash 725465442, now seen corresponding path program 1 times [2020-10-29 06:46:47,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:47,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877133681] [2020-10-29 06:46:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:47,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 06:46:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:46:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 06:46:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:52,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 06:46:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:46:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:52,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:46:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:52,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:52,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:52,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:46:52,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:46:52,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:52,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:46:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:52,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:46:52,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:52,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:46:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:52,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:52,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:52,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:46:52,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:52,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 06:46:52,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:52,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:46:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:46:52,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 06:46:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:46:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 06:46:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:52,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:52,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:46:52,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:46:52,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:46:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 06:46:52,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:46:52,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:46:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:46:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:46:52,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 06:46:52,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:46:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:46:52,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877133681] [2020-10-29 06:46:52,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:46:52,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:46:52,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381494907] [2020-10-29 06:46:52,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:46:52,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:46:52,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:46:52,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:46:52,798 INFO L87 Difference]: Start difference. First operand 2208 states and 2957 transitions. Second operand 7 states. [2020-10-29 06:46:55,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:46:55,745 INFO L93 Difference]: Finished difference Result 5421 states and 7586 transitions. [2020-10-29 06:46:55,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:46:55,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-29 06:46:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:46:55,770 INFO L225 Difference]: With dead ends: 5421 [2020-10-29 06:46:55,770 INFO L226 Difference]: Without dead ends: 3219 [2020-10-29 06:46:55,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:46:55,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2020-10-29 06:46:55,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3187. [2020-10-29 06:46:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3187 states. [2020-10-29 06:46:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 4291 transitions. [2020-10-29 06:46:55,899 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 4291 transitions. Word has length 198 [2020-10-29 06:46:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:46:55,900 INFO L481 AbstractCegarLoop]: Abstraction has 3187 states and 4291 transitions. [2020-10-29 06:46:55,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:46:55,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 4291 transitions. [2020-10-29 06:46:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-29 06:46:55,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:46:55,907 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:46:55,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:46:55,907 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:46:55,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:46:55,908 INFO L82 PathProgramCache]: Analyzing trace with hash -506186122, now seen corresponding path program 1 times [2020-10-29 06:46:55,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:46:55,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343599245] [2020-10-29 06:46:55,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:46:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:46:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:56,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:46:58,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:00,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:00,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-29 06:47:00,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:47:00,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 06:47:00,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:00,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:00,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:00,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 06:47:00,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:47:00,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:01,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:01,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:01,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:01,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:01,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:47:01,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:01,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:01,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:01,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:47:01,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:01,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:01,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:01,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:47:01,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:01,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 06:47:01,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:01,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:01,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:01,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:01,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 06:47:01,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:01,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 06:47:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:01,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:01,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:47:01,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:01,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 06:47:01,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:01,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:01,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:47:01,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:01,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343599245] [2020-10-29 06:47:01,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:01,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:01,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752028155] [2020-10-29 06:47:01,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:01,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:01,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:01,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:01,601 INFO L87 Difference]: Start difference. First operand 3187 states and 4291 transitions. Second operand 7 states. [2020-10-29 06:47:06,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:06,371 INFO L93 Difference]: Finished difference Result 9211 states and 13582 transitions. [2020-10-29 06:47:06,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:06,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-29 06:47:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:06,427 INFO L225 Difference]: With dead ends: 9211 [2020-10-29 06:47:06,427 INFO L226 Difference]: Without dead ends: 6030 [2020-10-29 06:47:06,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:06,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2020-10-29 06:47:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 5915. [2020-10-29 06:47:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5915 states. [2020-10-29 06:47:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5915 states to 5915 states and 7969 transitions. [2020-10-29 06:47:06,708 INFO L78 Accepts]: Start accepts. Automaton has 5915 states and 7969 transitions. Word has length 208 [2020-10-29 06:47:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:06,708 INFO L481 AbstractCegarLoop]: Abstraction has 5915 states and 7969 transitions. [2020-10-29 06:47:06,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5915 states and 7969 transitions. [2020-10-29 06:47:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-29 06:47:06,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:06,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:06,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:47:06,716 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:06,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:06,717 INFO L82 PathProgramCache]: Analyzing trace with hash 2094546364, now seen corresponding path program 1 times [2020-10-29 06:47:06,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:06,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283831874] [2020-10-29 06:47:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:07,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:11,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:11,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-29 06:47:11,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:47:11,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 06:47:11,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:11,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:47:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:47:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:11,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:11,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:11,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:11,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:47:11,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:11,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:11,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:12,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:12,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:12,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:12,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 06:47:12,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:12,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:12,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:47:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 06:47:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:12,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:12,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:47:12,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-29 06:47:12,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:12,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:12,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:47:12,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:12,439 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:12,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283831874] [2020-10-29 06:47:12,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:12,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:12,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694521310] [2020-10-29 06:47:12,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:12,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:12,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:12,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:12,442 INFO L87 Difference]: Start difference. First operand 5915 states and 7969 transitions. Second operand 7 states. [2020-10-29 06:47:16,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:16,866 INFO L93 Difference]: Finished difference Result 14509 states and 21569 transitions. [2020-10-29 06:47:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:47:16,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-29 06:47:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:16,933 INFO L225 Difference]: With dead ends: 14509 [2020-10-29 06:47:16,934 INFO L226 Difference]: Without dead ends: 8792 [2020-10-29 06:47:16,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8792 states. [2020-10-29 06:47:17,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8792 to 8260. [2020-10-29 06:47:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8260 states. [2020-10-29 06:47:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8260 states to 8260 states and 11048 transitions. [2020-10-29 06:47:17,304 INFO L78 Accepts]: Start accepts. Automaton has 8260 states and 11048 transitions. Word has length 209 [2020-10-29 06:47:17,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:17,305 INFO L481 AbstractCegarLoop]: Abstraction has 8260 states and 11048 transitions. [2020-10-29 06:47:17,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 8260 states and 11048 transitions. [2020-10-29 06:47:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 06:47:17,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:17,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-29 06:47:17,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:47:17,315 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:17,316 INFO L82 PathProgramCache]: Analyzing trace with hash -611165010, now seen corresponding path program 1 times [2020-10-29 06:47:17,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:17,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753255533] [2020-10-29 06:47:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:17,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:22,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:22,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 06:47:22,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:47:22,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 06:47:22,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:22,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 06:47:22,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 06:47:22,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:22,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:22,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:22,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:22,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:22,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:22,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:47:22,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:22,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:22,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:22,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:47:22,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:22,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:22,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:47:22,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:22,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 06:47:22,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:22,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:22,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:22,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:22,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 06:47:22,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:22,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 06:47:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:22,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:22,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:22,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 06:47:22,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:22,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-29 06:47:22,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:22,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:22,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 06:47:22,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:23,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753255533] [2020-10-29 06:47:23,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:23,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:23,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401095865] [2020-10-29 06:47:23,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:23,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:23,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:23,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:23,249 INFO L87 Difference]: Start difference. First operand 8260 states and 11048 transitions. Second operand 7 states. [2020-10-29 06:47:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:26,122 INFO L93 Difference]: Finished difference Result 19333 states and 26185 transitions. [2020-10-29 06:47:26,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:47:26,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-29 06:47:26,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:26,181 INFO L225 Difference]: With dead ends: 19333 [2020-10-29 06:47:26,181 INFO L226 Difference]: Without dead ends: 11281 [2020-10-29 06:47:26,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:47:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11281 states. [2020-10-29 06:47:26,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11281 to 10524. [2020-10-29 06:47:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10524 states. [2020-10-29 06:47:26,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10524 states to 10524 states and 13342 transitions. [2020-10-29 06:47:26,498 INFO L78 Accepts]: Start accepts. Automaton has 10524 states and 13342 transitions. Word has length 225 [2020-10-29 06:47:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:26,498 INFO L481 AbstractCegarLoop]: Abstraction has 10524 states and 13342 transitions. [2020-10-29 06:47:26,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 10524 states and 13342 transitions. [2020-10-29 06:47:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 06:47:26,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:26,508 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-29 06:47:26,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:47:26,509 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:26,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1001033689, now seen corresponding path program 1 times [2020-10-29 06:47:26,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:26,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357308927] [2020-10-29 06:47:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:26,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:26,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:27,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:30,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-29 06:47:30,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:30,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3811 [2020-10-29 06:47:30,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:30,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 06:47:30,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 06:47:30,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:30,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:30,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:30,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:30,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:30,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:47:30,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:30,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:30,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:30,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:30,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:30,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:30,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:30,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:30,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:47:30,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:30,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 06:47:30,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:30,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:30,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:30,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:30,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 06:47:30,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:47:30,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 06:47:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:30,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:30,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:47:30,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 06:47:30,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:30,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:30,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:30,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:30,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:31,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357308927] [2020-10-29 06:47:31,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:31,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:31,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775279302] [2020-10-29 06:47:31,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:31,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:31,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:31,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:31,070 INFO L87 Difference]: Start difference. First operand 10524 states and 13342 transitions. Second operand 7 states. [2020-10-29 06:47:34,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:34,918 INFO L93 Difference]: Finished difference Result 20831 states and 26231 transitions. [2020-10-29 06:47:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:47:34,920 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-29 06:47:34,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:34,958 INFO L225 Difference]: With dead ends: 20831 [2020-10-29 06:47:34,958 INFO L226 Difference]: Without dead ends: 10307 [2020-10-29 06:47:34,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:47:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2020-10-29 06:47:35,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 9924. [2020-10-29 06:47:35,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9924 states. [2020-10-29 06:47:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9924 states to 9924 states and 12397 transitions. [2020-10-29 06:47:35,292 INFO L78 Accepts]: Start accepts. Automaton has 9924 states and 12397 transitions. Word has length 238 [2020-10-29 06:47:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:35,292 INFO L481 AbstractCegarLoop]: Abstraction has 9924 states and 12397 transitions. [2020-10-29 06:47:35,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:35,292 INFO L276 IsEmpty]: Start isEmpty. Operand 9924 states and 12397 transitions. [2020-10-29 06:47:35,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-29 06:47:35,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:35,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2020-10-29 06:47:35,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:47:35,301 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:35,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:35,301 INFO L82 PathProgramCache]: Analyzing trace with hash -858842977, now seen corresponding path program 1 times [2020-10-29 06:47:35,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:35,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270992790] [2020-10-29 06:47:35,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-29 06:47:37,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2305 [2020-10-29 06:47:37,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 06:47:37,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 06:47:37,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:37,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:47:37,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:37,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:37,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:37,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:47:37,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 06:47:37,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:37,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:47:37,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:37,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 06:47:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:37,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:38,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:38,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:47:38,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 06:47:38,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:38,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:38,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:38,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:38,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270992790] [2020-10-29 06:47:38,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:38,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:38,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158096675] [2020-10-29 06:47:38,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:38,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:38,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:38,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:38,242 INFO L87 Difference]: Start difference. First operand 9924 states and 12397 transitions. Second operand 7 states. [2020-10-29 06:47:39,255 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 06:47:42,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:42,560 INFO L93 Difference]: Finished difference Result 19465 states and 24297 transitions. [2020-10-29 06:47:42,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:47:42,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-29 06:47:42,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:42,595 INFO L225 Difference]: With dead ends: 19465 [2020-10-29 06:47:42,596 INFO L226 Difference]: Without dead ends: 10310 [2020-10-29 06:47:42,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10310 states. [2020-10-29 06:47:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10310 to 10112. [2020-10-29 06:47:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10112 states. [2020-10-29 06:47:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10112 states to 10112 states and 12535 transitions. [2020-10-29 06:47:42,896 INFO L78 Accepts]: Start accepts. Automaton has 10112 states and 12535 transitions. Word has length 239 [2020-10-29 06:47:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:42,897 INFO L481 AbstractCegarLoop]: Abstraction has 10112 states and 12535 transitions. [2020-10-29 06:47:42,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 10112 states and 12535 transitions. [2020-10-29 06:47:42,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 06:47:42,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:42,905 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:47:42,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:47:42,905 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:42,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:42,906 INFO L82 PathProgramCache]: Analyzing trace with hash -610700885, now seen corresponding path program 1 times [2020-10-29 06:47:42,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:42,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440387194] [2020-10-29 06:47:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:43,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:43,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:44,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:47,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:47,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 06:47:47,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:47:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4972 [2020-10-29 06:47:47,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:47,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-10-29 06:47:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:47:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:48,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:48,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:48,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:48,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:48,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:48,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:47:48,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:48,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:48,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:48,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:48,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:48,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:48,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:48,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:48,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:48,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:47:48,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:48,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 06:47:48,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:48,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:48,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 06:47:48,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:48,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 06:47:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:48,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:48,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:47:48,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:48,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 06:47:48,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:48,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:47:48,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:48,471 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:48,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440387194] [2020-10-29 06:47:48,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:48,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:48,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770184994] [2020-10-29 06:47:48,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:48,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:48,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:48,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:48,474 INFO L87 Difference]: Start difference. First operand 10112 states and 12535 transitions. Second operand 7 states. [2020-10-29 06:47:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:52,365 INFO L93 Difference]: Finished difference Result 20756 states and 27540 transitions. [2020-10-29 06:47:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:52,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-29 06:47:52,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:52,425 INFO L225 Difference]: With dead ends: 20756 [2020-10-29 06:47:52,425 INFO L226 Difference]: Without dead ends: 10654 [2020-10-29 06:47:52,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:52,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10654 states. [2020-10-29 06:47:52,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10654 to 10311. [2020-10-29 06:47:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10311 states. [2020-10-29 06:47:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10311 states to 10311 states and 12535 transitions. [2020-10-29 06:47:52,772 INFO L78 Accepts]: Start accepts. Automaton has 10311 states and 12535 transitions. Word has length 245 [2020-10-29 06:47:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:52,773 INFO L481 AbstractCegarLoop]: Abstraction has 10311 states and 12535 transitions. [2020-10-29 06:47:52,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:52,773 INFO L276 IsEmpty]: Start isEmpty. Operand 10311 states and 12535 transitions. [2020-10-29 06:47:52,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-29 06:47:52,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:52,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:47:52,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:47:52,781 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:52,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:52,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1514706274, now seen corresponding path program 1 times [2020-10-29 06:47:52,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:52,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261751065] [2020-10-29 06:47:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-29 06:47:54,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:47:54,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1915 [2020-10-29 06:47:54,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:54,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:47:54,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 06:47:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:47:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:47:54,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:47:54,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:47:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:47:54,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:54,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:47:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:54,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:54,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:47:54,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:54,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 06:47:54,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:54,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:54,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:47:54,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:47:54,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:47:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:55,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:47:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:55,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:55,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:47:55,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:47:55,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:47:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:47:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:47:55,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261751065] [2020-10-29 06:47:55,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:47:55,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:47:55,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869377729] [2020-10-29 06:47:55,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:47:55,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:47:55,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:47:55,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:47:55,190 INFO L87 Difference]: Start difference. First operand 10311 states and 12535 transitions. Second operand 7 states. [2020-10-29 06:47:58,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:47:58,535 INFO L93 Difference]: Finished difference Result 22810 states and 28505 transitions. [2020-10-29 06:47:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:47:58,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-29 06:47:58,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:47:58,585 INFO L225 Difference]: With dead ends: 22810 [2020-10-29 06:47:58,586 INFO L226 Difference]: Without dead ends: 12705 [2020-10-29 06:47:58,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:47:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12705 states. [2020-10-29 06:47:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12705 to 12603. [2020-10-29 06:47:58,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12603 states. [2020-10-29 06:47:58,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12603 states to 12603 states and 15136 transitions. [2020-10-29 06:47:58,947 INFO L78 Accepts]: Start accepts. Automaton has 12603 states and 15136 transitions. Word has length 251 [2020-10-29 06:47:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:47:58,948 INFO L481 AbstractCegarLoop]: Abstraction has 12603 states and 15136 transitions. [2020-10-29 06:47:58,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:47:58,948 INFO L276 IsEmpty]: Start isEmpty. Operand 12603 states and 15136 transitions. [2020-10-29 06:47:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 06:47:58,958 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:47:58,959 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:47:58,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:47:58,959 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:47:58,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:47:58,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1676547001, now seen corresponding path program 1 times [2020-10-29 06:47:58,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:47:58,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105718590] [2020-10-29 06:47:58,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:47:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:47:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:47:59,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:00,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:00,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 06:48:00,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:00,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-10-29 06:48:00,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:00,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:00,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-29 06:48:00,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 06:48:00,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:00,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:00,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:00,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:00,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:00,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:00,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:48:00,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:00,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:00,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:00,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:00,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:01,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:01,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:01,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:01,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:48:01,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:01,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 06:48:01,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:01,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:01,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 06:48:01,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:01,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-29 06:48:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:01,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:01,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:01,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:48:01,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:01,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 06:48:01,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:01,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:01,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:48:01,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:48:01,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105718590] [2020-10-29 06:48:01,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:01,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:48:01,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895340599] [2020-10-29 06:48:01,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:48:01,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:01,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:48:01,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:48:01,484 INFO L87 Difference]: Start difference. First operand 12603 states and 15136 transitions. Second operand 8 states. [2020-10-29 06:48:06,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:06,437 INFO L93 Difference]: Finished difference Result 26432 states and 31904 transitions. [2020-10-29 06:48:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:48:06,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 259 [2020-10-29 06:48:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:06,488 INFO L225 Difference]: With dead ends: 26432 [2020-10-29 06:48:06,488 INFO L226 Difference]: Without dead ends: 14581 [2020-10-29 06:48:06,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 06:48:06,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14581 states. [2020-10-29 06:48:06,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14581 to 13973. [2020-10-29 06:48:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13973 states. [2020-10-29 06:48:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13973 states to 13973 states and 16472 transitions. [2020-10-29 06:48:06,808 INFO L78 Accepts]: Start accepts. Automaton has 13973 states and 16472 transitions. Word has length 259 [2020-10-29 06:48:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:06,809 INFO L481 AbstractCegarLoop]: Abstraction has 13973 states and 16472 transitions. [2020-10-29 06:48:06,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:48:06,809 INFO L276 IsEmpty]: Start isEmpty. Operand 13973 states and 16472 transitions. [2020-10-29 06:48:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-10-29 06:48:06,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:06,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:48:06,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:48:06,816 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:06,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:06,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1006733031, now seen corresponding path program 1 times [2020-10-29 06:48:06,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:06,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79446496] [2020-10-29 06:48:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:06,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:07,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:07,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:07,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-29 06:48:07,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-10-29 06:48:07,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:07,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:48:07,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:48:07,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-29 06:48:07,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:08,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:08,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:08,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:08,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:08,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:08,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:48:08,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:08,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:08,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:08,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:08,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:08,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:08,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:08,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:08,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 06:48:08,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:08,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:08,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:08,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:48:08,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:08,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:08,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:08,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:08,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:48:08,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:48:08,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:08,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:08,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 06:48:08,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-29 06:48:08,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79446496] [2020-10-29 06:48:08,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:08,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:48:08,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103052933] [2020-10-29 06:48:08,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:48:08,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:08,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:48:08,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:08,462 INFO L87 Difference]: Start difference. First operand 13973 states and 16472 transitions. Second operand 6 states. [2020-10-29 06:48:10,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:10,983 INFO L93 Difference]: Finished difference Result 26050 states and 30764 transitions. [2020-10-29 06:48:10,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:48:10,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 293 [2020-10-29 06:48:10,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:11,023 INFO L225 Difference]: With dead ends: 26050 [2020-10-29 06:48:11,023 INFO L226 Difference]: Without dead ends: 13979 [2020-10-29 06:48:11,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:11,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13979 states. [2020-10-29 06:48:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13979 to 13785. [2020-10-29 06:48:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13785 states. [2020-10-29 06:48:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13785 states to 13785 states and 15937 transitions. [2020-10-29 06:48:11,477 INFO L78 Accepts]: Start accepts. Automaton has 13785 states and 15937 transitions. Word has length 293 [2020-10-29 06:48:11,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:11,478 INFO L481 AbstractCegarLoop]: Abstraction has 13785 states and 15937 transitions. [2020-10-29 06:48:11,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:48:11,478 INFO L276 IsEmpty]: Start isEmpty. Operand 13785 states and 15937 transitions. [2020-10-29 06:48:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 06:48:11,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:11,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:48:11,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:48:11,485 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:11,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:11,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1085332190, now seen corresponding path program 1 times [2020-10-29 06:48:11,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:11,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411630586] [2020-10-29 06:48:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:12,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-29 06:48:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-29 06:48:12,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:12,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:48:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:48:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:12,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:12,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:12,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:12,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:12,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:12,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:12,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:12,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:12,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:12,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:12,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:12,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:12,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 06:48:12,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:12,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:12,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:12,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:48:12,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:12,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:12,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:12,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:12,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:48:12,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:12,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:48:12,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:12,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:48:12,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:48:12,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411630586] [2020-10-29 06:48:12,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:12,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:12,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022214445] [2020-10-29 06:48:12,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:48:12,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:12,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:48:12,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:12,588 INFO L87 Difference]: Start difference. First operand 13785 states and 15937 transitions. Second operand 7 states. [2020-10-29 06:48:16,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:16,338 INFO L93 Difference]: Finished difference Result 27212 states and 31452 transitions. [2020-10-29 06:48:16,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:48:16,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-29 06:48:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:16,376 INFO L225 Difference]: With dead ends: 27212 [2020-10-29 06:48:16,376 INFO L226 Difference]: Without dead ends: 15313 [2020-10-29 06:48:16,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:48:16,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15313 states. [2020-10-29 06:48:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15313 to 14716. [2020-10-29 06:48:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14716 states. [2020-10-29 06:48:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14716 states to 14716 states and 16800 transitions. [2020-10-29 06:48:16,705 INFO L78 Accepts]: Start accepts. Automaton has 14716 states and 16800 transitions. Word has length 296 [2020-10-29 06:48:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:16,705 INFO L481 AbstractCegarLoop]: Abstraction has 14716 states and 16800 transitions. [2020-10-29 06:48:16,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:48:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 14716 states and 16800 transitions. [2020-10-29 06:48:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-29 06:48:16,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:16,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:16,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:48:16,715 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1242211868, now seen corresponding path program 1 times [2020-10-29 06:48:16,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:16,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401875194] [2020-10-29 06:48:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:16,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:18,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:18,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-29 06:48:18,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:18,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2150 [2020-10-29 06:48:18,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:18,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:18,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:48:18,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:18,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 330 [2020-10-29 06:48:18,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:19,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:19,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:19,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:19,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:19,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:48:19,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:19,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:19,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:19,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:19,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:19,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:19,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:19,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:19,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 06:48:19,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:19,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:48:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:19,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:48:19,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:19,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:19,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:19,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:19,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 06:48:19,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 06:48:19,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:19,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:19,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:48:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-10-29 06:48:19,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401875194] [2020-10-29 06:48:19,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:19,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:48:19,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688460988] [2020-10-29 06:48:19,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:48:19,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:19,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:48:19,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:48:19,736 INFO L87 Difference]: Start difference. First operand 14716 states and 16800 transitions. Second operand 8 states. [2020-10-29 06:48:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:23,506 INFO L93 Difference]: Finished difference Result 29642 states and 34945 transitions. [2020-10-29 06:48:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:48:23,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 325 [2020-10-29 06:48:23,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:23,569 INFO L225 Difference]: With dead ends: 29642 [2020-10-29 06:48:23,569 INFO L226 Difference]: Without dead ends: 17006 [2020-10-29 06:48:23,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:48:23,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17006 states. [2020-10-29 06:48:23,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17006 to 16509. [2020-10-29 06:48:23,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16509 states. [2020-10-29 06:48:23,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16509 states to 16509 states and 18754 transitions. [2020-10-29 06:48:23,982 INFO L78 Accepts]: Start accepts. Automaton has 16509 states and 18754 transitions. Word has length 325 [2020-10-29 06:48:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:23,983 INFO L481 AbstractCegarLoop]: Abstraction has 16509 states and 18754 transitions. [2020-10-29 06:48:23,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:48:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16509 states and 18754 transitions. [2020-10-29 06:48:23,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-29 06:48:23,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:23,994 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:23,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:48:23,995 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:23,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1508809859, now seen corresponding path program 1 times [2020-10-29 06:48:23,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:23,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981637356] [2020-10-29 06:48:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:24,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:24,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:25,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-29 06:48:29,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:48:29,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 06:48:29,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:48:29,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:29,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-29 06:48:29,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:29,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:29,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:29,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:48:29,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:29,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:29,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:29,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:29,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:48:29,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:48:29,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:48:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:48:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:48:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 06:48:29,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:48:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:48:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:29,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-29 06:48:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:29,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:29,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:29,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:48:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 06:48:29,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:29,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:29,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:48:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 216 proven. 100 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-29 06:48:30,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981637356] [2020-10-29 06:48:30,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:30,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:48:30,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126966746] [2020-10-29 06:48:30,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:48:30,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:30,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:48:30,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:48:30,043 INFO L87 Difference]: Start difference. First operand 16509 states and 18754 transitions. Second operand 10 states. [2020-10-29 06:48:30,190 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-29 06:48:32,744 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-29 06:48:34,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:34,172 INFO L93 Difference]: Finished difference Result 30706 states and 35013 transitions. [2020-10-29 06:48:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 06:48:34,178 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 355 [2020-10-29 06:48:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:34,222 INFO L225 Difference]: With dead ends: 30706 [2020-10-29 06:48:34,222 INFO L226 Difference]: Without dead ends: 17878 [2020-10-29 06:48:34,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2020-10-29 06:48:34,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17878 states. [2020-10-29 06:48:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17878 to 17859. [2020-10-29 06:48:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17859 states. [2020-10-29 06:48:34,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17859 states to 17859 states and 20250 transitions. [2020-10-29 06:48:34,601 INFO L78 Accepts]: Start accepts. Automaton has 17859 states and 20250 transitions. Word has length 355 [2020-10-29 06:48:34,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:34,601 INFO L481 AbstractCegarLoop]: Abstraction has 17859 states and 20250 transitions. [2020-10-29 06:48:34,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:48:34,601 INFO L276 IsEmpty]: Start isEmpty. Operand 17859 states and 20250 transitions. [2020-10-29 06:48:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-29 06:48:34,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:34,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:34,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:48:34,614 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:34,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1855400698, now seen corresponding path program 1 times [2020-10-29 06:48:34,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:34,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495612101] [2020-10-29 06:48:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:34,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:35,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:37,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:38,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:38,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-29 06:48:38,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:48:38,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3604 [2020-10-29 06:48:38,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:38,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 06:48:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 389 [2020-10-29 06:48:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:38,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:38,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:38,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:38,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:38,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:38,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:48:38,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:38,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:38,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:38,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:38,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:38,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:38,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:38,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:48:38,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:38,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-29 06:48:38,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:38,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:38,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:38,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:38,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:48:38,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:38,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:48:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:38,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:38,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:38,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:39,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:48:39,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-29 06:48:39,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:39,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:48:39,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:39,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-29 06:48:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:39,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:39,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:48:39,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 06:48:39,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:39,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:48:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:39,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:48:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 283 proven. 61 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-29 06:48:39,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495612101] [2020-10-29 06:48:39,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:39,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:48:39,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538989816] [2020-10-29 06:48:39,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:48:39,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:39,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:48:39,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:48:39,337 INFO L87 Difference]: Start difference. First operand 17859 states and 20250 transitions. Second operand 8 states. [2020-10-29 06:48:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:43,193 INFO L93 Difference]: Finished difference Result 21952 states and 25525 transitions. [2020-10-29 06:48:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:48:43,195 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 382 [2020-10-29 06:48:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:43,251 INFO L225 Difference]: With dead ends: 21952 [2020-10-29 06:48:43,251 INFO L226 Difference]: Without dead ends: 21949 [2020-10-29 06:48:43,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:48:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21949 states. [2020-10-29 06:48:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21949 to 21739. [2020-10-29 06:48:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21739 states. [2020-10-29 06:48:43,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21739 states to 21739 states and 24679 transitions. [2020-10-29 06:48:43,855 INFO L78 Accepts]: Start accepts. Automaton has 21739 states and 24679 transitions. Word has length 382 [2020-10-29 06:48:43,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:43,856 INFO L481 AbstractCegarLoop]: Abstraction has 21739 states and 24679 transitions. [2020-10-29 06:48:43,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:48:43,856 INFO L276 IsEmpty]: Start isEmpty. Operand 21739 states and 24679 transitions. [2020-10-29 06:48:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-29 06:48:43,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:43,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:43,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:48:43,873 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:43,876 INFO L82 PathProgramCache]: Analyzing trace with hash 482660546, now seen corresponding path program 1 times [2020-10-29 06:48:43,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:43,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897753745] [2020-10-29 06:48:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:44,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:45,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:45,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-29 06:48:45,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1778 [2020-10-29 06:48:45,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:45,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 353 [2020-10-29 06:48:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 06:48:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:45,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:45,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:45,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:45,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:45,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:45,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:48:45,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:45,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:45,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:45,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:45,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:45,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:45,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:45,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:45,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 06:48:45,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:45,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:45,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:45,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:45,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:46,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:46,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:48:46,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:48:46,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:46,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:46,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:48:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:46,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:46,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:48:46,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 06:48:46,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:46,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 06:48:46,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-10-29 06:48:46,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897753745] [2020-10-29 06:48:46,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:46,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:48:46,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315114749] [2020-10-29 06:48:46,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:48:46,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:46,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:48:46,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:48:46,198 INFO L87 Difference]: Start difference. First operand 21739 states and 24679 transitions. Second operand 5 states. [2020-10-29 06:48:48,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:48,650 INFO L93 Difference]: Finished difference Result 23278 states and 26466 transitions. [2020-10-29 06:48:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:48:48,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 394 [2020-10-29 06:48:48,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:48,696 INFO L225 Difference]: With dead ends: 23278 [2020-10-29 06:48:48,697 INFO L226 Difference]: Without dead ends: 23275 [2020-10-29 06:48:48,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:48,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23275 states. [2020-10-29 06:48:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23275 to 22307. [2020-10-29 06:48:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22307 states. [2020-10-29 06:48:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22307 states to 22307 states and 25361 transitions. [2020-10-29 06:48:49,059 INFO L78 Accepts]: Start accepts. Automaton has 22307 states and 25361 transitions. Word has length 394 [2020-10-29 06:48:49,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:49,059 INFO L481 AbstractCegarLoop]: Abstraction has 22307 states and 25361 transitions. [2020-10-29 06:48:49,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:48:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 22307 states and 25361 transitions. [2020-10-29 06:48:49,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-10-29 06:48:49,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:49,072 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:49,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:48:49,073 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:49,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:49,073 INFO L82 PathProgramCache]: Analyzing trace with hash -765254562, now seen corresponding path program 1 times [2020-10-29 06:48:49,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:49,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281204437] [2020-10-29 06:48:49,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:49,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:49,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:49,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:49,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:50,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:50,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:50,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:50,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-29 06:48:50,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 06:48:50,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-29 06:48:50,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:50,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 06:48:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:50,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:50,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:51,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:51,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:48:51,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:51,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:51,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:51,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 06:48:51,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 06:48:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:48:51,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:48:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 06:48:51,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:48:51,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:48:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:48:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:51,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:51,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:51,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:48:51,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:51,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:48:51,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:51,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:48:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 06:48:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:48:51,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 146 proven. 6 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-29 06:48:51,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281204437] [2020-10-29 06:48:51,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:51,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:48:51,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136915863] [2020-10-29 06:48:51,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:48:51,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:51,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:48:51,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:48:51,668 INFO L87 Difference]: Start difference. First operand 22307 states and 25361 transitions. Second operand 6 states. [2020-10-29 06:48:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:48:53,799 INFO L93 Difference]: Finished difference Result 41134 states and 46840 transitions. [2020-10-29 06:48:53,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:48:53,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 425 [2020-10-29 06:48:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:48:53,836 INFO L225 Difference]: With dead ends: 41134 [2020-10-29 06:48:53,836 INFO L226 Difference]: Without dead ends: 21550 [2020-10-29 06:48:53,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:48:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21550 states. [2020-10-29 06:48:54,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21550 to 21515. [2020-10-29 06:48:54,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21515 states. [2020-10-29 06:48:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21515 states to 21515 states and 24404 transitions. [2020-10-29 06:48:54,141 INFO L78 Accepts]: Start accepts. Automaton has 21515 states and 24404 transitions. Word has length 425 [2020-10-29 06:48:54,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:48:54,142 INFO L481 AbstractCegarLoop]: Abstraction has 21515 states and 24404 transitions. [2020-10-29 06:48:54,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:48:54,142 INFO L276 IsEmpty]: Start isEmpty. Operand 21515 states and 24404 transitions. [2020-10-29 06:48:54,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-10-29 06:48:54,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:48:54,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:48:54,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:48:54,156 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:48:54,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:48:54,156 INFO L82 PathProgramCache]: Analyzing trace with hash -98646215, now seen corresponding path program 1 times [2020-10-29 06:48:54,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:48:54,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63522105] [2020-10-29 06:48:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:48:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:54,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:55,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:56,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:56,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-29 06:48:56,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:48:56,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2115 [2020-10-29 06:48:56,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:56,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:56,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 06:48:56,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:48:56,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 441 [2020-10-29 06:48:56,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:56,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:48:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:56,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:56,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:56,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:48:56,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:56,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:48:56,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:56,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:48:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:48:56,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:48:56,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:48:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:56,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:56,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:56,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:48:56,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:56,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 06:48:56,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:56,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:48:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:56,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:48:56,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:56,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:48:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:56,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:56,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:56,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:48:56,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:56,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 06:48:56,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:56,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:56,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:48:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 06:48:56,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:56,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:48:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:48:56,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:48:57,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:48:57,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:48:57,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:48:57,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-29 06:48:57,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:48:57,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:48:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:48:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:48:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:48:57,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:48:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 13 proven. 348 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-29 06:48:57,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63522105] [2020-10-29 06:48:57,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:48:57,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:48:57,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405016799] [2020-10-29 06:48:57,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 06:48:57,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:48:57,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 06:48:57,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:48:57,474 INFO L87 Difference]: Start difference. First operand 21515 states and 24404 transitions. Second operand 11 states. [2020-10-29 06:49:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:04,202 INFO L93 Difference]: Finished difference Result 35723 states and 41791 transitions. [2020-10-29 06:49:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 06:49:04,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 434 [2020-10-29 06:49:04,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:04,279 INFO L225 Difference]: With dead ends: 35723 [2020-10-29 06:49:04,279 INFO L226 Difference]: Without dead ends: 35720 [2020-10-29 06:49:04,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2020-10-29 06:49:04,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35720 states. [2020-10-29 06:49:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35720 to 30585. [2020-10-29 06:49:04,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30585 states. [2020-10-29 06:49:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30585 states to 30585 states and 34839 transitions. [2020-10-29 06:49:04,997 INFO L78 Accepts]: Start accepts. Automaton has 30585 states and 34839 transitions. Word has length 434 [2020-10-29 06:49:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:04,997 INFO L481 AbstractCegarLoop]: Abstraction has 30585 states and 34839 transitions. [2020-10-29 06:49:04,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 06:49:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 30585 states and 34839 transitions. [2020-10-29 06:49:05,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-29 06:49:05,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:05,020 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:05,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:49:05,020 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:05,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:05,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1752321580, now seen corresponding path program 1 times [2020-10-29 06:49:05,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:05,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637576362] [2020-10-29 06:49:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:05,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:05,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:06,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:06,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-29 06:49:06,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-29 06:49:06,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:06,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 400 [2020-10-29 06:49:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 06:49:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:06,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:06,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:06,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:49:06,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:06,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:06,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:06,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:06,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:06,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:06,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:49:06,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:06,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:06,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:06,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:06,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:06,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:49:06,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:06,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 06:49:06,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:06,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:06,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:06,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:49:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:06,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:06,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:49:06,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:06,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 06:49:06,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:06,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:06,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:06,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:49:06,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:06,927 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-29 06:49:06,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637576362] [2020-10-29 06:49:06,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:06,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:49:06,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701294983] [2020-10-29 06:49:06,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:49:06,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:06,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:49:06,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:49:06,930 INFO L87 Difference]: Start difference. First operand 30585 states and 34839 transitions. Second operand 5 states. [2020-10-29 06:49:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:10,059 INFO L93 Difference]: Finished difference Result 57538 states and 65700 transitions. [2020-10-29 06:49:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:49:10,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 441 [2020-10-29 06:49:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:10,120 INFO L225 Difference]: With dead ends: 57538 [2020-10-29 06:49:10,120 INFO L226 Difference]: Without dead ends: 31776 [2020-10-29 06:49:10,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:49:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31776 states. [2020-10-29 06:49:10,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31776 to 31727. [2020-10-29 06:49:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31727 states. [2020-10-29 06:49:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31727 states to 31727 states and 36042 transitions. [2020-10-29 06:49:10,749 INFO L78 Accepts]: Start accepts. Automaton has 31727 states and 36042 transitions. Word has length 441 [2020-10-29 06:49:10,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:10,750 INFO L481 AbstractCegarLoop]: Abstraction has 31727 states and 36042 transitions. [2020-10-29 06:49:10,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:49:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 31727 states and 36042 transitions. [2020-10-29 06:49:10,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-29 06:49:10,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:10,780 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:10,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:49:10,780 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:10,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:10,781 INFO L82 PathProgramCache]: Analyzing trace with hash -991844000, now seen corresponding path program 1 times [2020-10-29 06:49:10,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:10,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465439391] [2020-10-29 06:49:10,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:11,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:15,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:15,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-29 06:49:15,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:49:15,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 06:49:15,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:15,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 06:49:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:49:15,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 348 [2020-10-29 06:49:15,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:16,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:16,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:16,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:16,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:16,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:49:16,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:16,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:16,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:49:16,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:16,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:16,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:16,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:16,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:49:16,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:16,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 06:49:16,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:16,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:16,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:49:16,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:16,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:49:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:16,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:16,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:49:16,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:16,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 06:49:16,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:16,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:49:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:49:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-29 06:49:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:16,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:16,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:16,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:49:16,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 06:49:16,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:16,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 06:49:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:16,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-10-29 06:49:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:16,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:16,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 06:49:16,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:16,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 06:49:16,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:16,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-29 06:49:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:16,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 198 proven. 327 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-10-29 06:49:16,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465439391] [2020-10-29 06:49:16,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:16,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:49:16,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542287828] [2020-10-29 06:49:16,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 06:49:16,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:16,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 06:49:16,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:49:16,898 INFO L87 Difference]: Start difference. First operand 31727 states and 36042 transitions. Second operand 9 states. [2020-10-29 06:49:17,064 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-29 06:49:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:21,160 INFO L93 Difference]: Finished difference Result 58708 states and 66886 transitions. [2020-10-29 06:49:21,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 06:49:21,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 522 [2020-10-29 06:49:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:21,221 INFO L225 Difference]: With dead ends: 58708 [2020-10-29 06:49:21,221 INFO L226 Difference]: Without dead ends: 31998 [2020-10-29 06:49:21,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2020-10-29 06:49:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31998 states. [2020-10-29 06:49:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31998 to 31919. [2020-10-29 06:49:21,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31919 states. [2020-10-29 06:49:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31919 states to 31919 states and 36243 transitions. [2020-10-29 06:49:21,782 INFO L78 Accepts]: Start accepts. Automaton has 31919 states and 36243 transitions. Word has length 522 [2020-10-29 06:49:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:21,783 INFO L481 AbstractCegarLoop]: Abstraction has 31919 states and 36243 transitions. [2020-10-29 06:49:21,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 06:49:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 31919 states and 36243 transitions. [2020-10-29 06:49:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-29 06:49:21,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:21,807 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:21,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 06:49:21,807 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:21,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:21,808 INFO L82 PathProgramCache]: Analyzing trace with hash -724367301, now seen corresponding path program 1 times [2020-10-29 06:49:21,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:21,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473252530] [2020-10-29 06:49:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:24,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:24,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-29 06:49:24,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:49:24,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2773 [2020-10-29 06:49:24,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:24,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-29 06:49:24,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 06:49:24,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:49:24,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:24,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:24,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:24,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:49:24,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:24,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:24,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:24,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:24,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:24,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:24,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:24,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 06:49:24,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:24,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:24,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:25,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:25,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:25,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:49:25,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:25,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:49:25,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:25,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 06:49:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-29 06:49:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:25,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:25,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:25,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 06:49:25,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:25,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:49:25,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:25,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:25,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:25,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 06:49:25,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-10-29 06:49:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:25,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:25,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:25,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 06:49:25,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:25,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 06:49:25,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:25,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-29 06:49:25,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:25,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 409 proven. 106 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2020-10-29 06:49:25,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473252530] [2020-10-29 06:49:25,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:25,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:25,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812630718] [2020-10-29 06:49:25,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:25,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:25,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:25,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:25,657 INFO L87 Difference]: Start difference. First operand 31919 states and 36243 transitions. Second operand 7 states. [2020-10-29 06:49:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:29,714 INFO L93 Difference]: Finished difference Result 61682 states and 70100 transitions. [2020-10-29 06:49:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:49:29,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 560 [2020-10-29 06:49:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:29,794 INFO L225 Difference]: With dead ends: 61682 [2020-10-29 06:49:29,794 INFO L226 Difference]: Without dead ends: 30147 [2020-10-29 06:49:29,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:29,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30147 states. [2020-10-29 06:49:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30147 to 29883. [2020-10-29 06:49:30,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29883 states. [2020-10-29 06:49:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29883 states to 29883 states and 33670 transitions. [2020-10-29 06:49:30,245 INFO L78 Accepts]: Start accepts. Automaton has 29883 states and 33670 transitions. Word has length 560 [2020-10-29 06:49:30,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:30,245 INFO L481 AbstractCegarLoop]: Abstraction has 29883 states and 33670 transitions. [2020-10-29 06:49:30,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 29883 states and 33670 transitions. [2020-10-29 06:49:30,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-10-29 06:49:30,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:30,273 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:30,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 06:49:30,274 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:30,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:30,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1884724754, now seen corresponding path program 1 times [2020-10-29 06:49:30,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:30,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175898067] [2020-10-29 06:49:30,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:30,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:30,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-10-29 06:49:35,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:49:35,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 06:49:35,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 405 [2020-10-29 06:49:35,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:49:35,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:35,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:49:35,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:49:35,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:35,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 06:49:35,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:35,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:35,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:35,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:49:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:49:35,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:35,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 06:49:35,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:49:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:35,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:49:35,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-29 06:49:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:35,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:35,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 06:49:35,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:35,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 06:49:35,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:35,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-29 06:49:35,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:35,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2020-10-29 06:49:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:36,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:36,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 06:49:36,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:36,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 06:49:36,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:36,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:36,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:36,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:49:36,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 909 backedges. 564 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-29 06:49:36,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175898067] [2020-10-29 06:49:36,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:36,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:49:36,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518092500] [2020-10-29 06:49:36,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:49:36,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:36,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:49:36,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:49:36,483 INFO L87 Difference]: Start difference. First operand 29883 states and 33670 transitions. Second operand 7 states. [2020-10-29 06:49:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:40,323 INFO L93 Difference]: Finished difference Result 60609 states and 68526 transitions. [2020-10-29 06:49:40,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:49:40,324 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 585 [2020-10-29 06:49:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:40,379 INFO L225 Difference]: With dead ends: 60609 [2020-10-29 06:49:40,380 INFO L226 Difference]: Without dead ends: 31110 [2020-10-29 06:49:40,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:40,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31110 states. [2020-10-29 06:49:40,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31110 to 30651. [2020-10-29 06:49:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30651 states. [2020-10-29 06:49:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30651 states to 30651 states and 34338 transitions. [2020-10-29 06:49:40,822 INFO L78 Accepts]: Start accepts. Automaton has 30651 states and 34338 transitions. Word has length 585 [2020-10-29 06:49:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:49:40,823 INFO L481 AbstractCegarLoop]: Abstraction has 30651 states and 34338 transitions. [2020-10-29 06:49:40,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:49:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 30651 states and 34338 transitions. [2020-10-29 06:49:40,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2020-10-29 06:49:40,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:49:40,849 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:49:40,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 06:49:40,849 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:49:40,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:49:40,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1290419926, now seen corresponding path program 1 times [2020-10-29 06:49:40,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:49:40,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480966028] [2020-10-29 06:49:40,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:49:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:41,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:41,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:41,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:43,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:46,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:46,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-29 06:49:46,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:49:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 06:49:46,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:46,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 06:49:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:49:46,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 597 [2020-10-29 06:49:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:46,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:49:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:46,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:46,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:46,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:49:46,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:46,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:49:46,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:46,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:49:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:49:46,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:49:46,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:46,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:49:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:46,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:46,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:49:46,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:46,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 06:49:46,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:46,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:49:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-29 06:49:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:46,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:49:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:46,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:46,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:46,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-29 06:49:46,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:46,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 06:49:46,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:46,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:49:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:46,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-29 06:49:46,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:46,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:49:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:46,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:46,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:46,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 06:49:46,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 06:49:46,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:46,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:49:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 06:49:46,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:49:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2020-10-29 06:49:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:49:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:49:47,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:49:47,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-29 06:49:47,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:49:47,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-29 06:49:47,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:49:47,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:49:47,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:49:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:49:47,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:49:47,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:49:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 19 proven. 201 refuted. 0 times theorem prover too weak. 629 trivial. 0 not checked. [2020-10-29 06:49:47,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480966028] [2020-10-29 06:49:47,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:49:47,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 06:49:47,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165082654] [2020-10-29 06:49:47,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 06:49:47,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:49:47,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 06:49:47,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:49:47,911 INFO L87 Difference]: Start difference. First operand 30651 states and 34338 transitions. Second operand 12 states. [2020-10-29 06:49:48,091 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-29 06:49:49,162 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-29 06:49:51,171 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-29 06:49:53,076 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-29 06:49:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:49:56,732 INFO L93 Difference]: Finished difference Result 70710 states and 79973 transitions. [2020-10-29 06:49:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 06:49:56,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 588 [2020-10-29 06:49:56,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:49:56,830 INFO L225 Difference]: With dead ends: 70710 [2020-10-29 06:49:56,831 INFO L226 Difference]: Without dead ends: 43356 [2020-10-29 06:49:56,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2020-10-29 06:49:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43356 states.