/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:54:54,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:54:54,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:54:54,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:54:54,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:54:54,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:54:54,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:54:54,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:54:54,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:54:54,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:54:54,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:54:54,148 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:54:54,148 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:54:54,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:54:54,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:54:54,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:54:54,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:54:54,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:54:54,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:54:54,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:54:54,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:54:54,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:54:54,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:54:54,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:54:54,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:54:54,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:54:54,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:54:54,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:54:54,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:54:54,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:54:54,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:54:54,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:54:54,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:54:54,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:54:54,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:54:54,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:54:54,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:54:54,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:54:54,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:54:54,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:54:54,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:54:54,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 08:54:54,252 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:54:54,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:54:54,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:54:54,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:54:54,255 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:54:54,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:54:54,256 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:54:54,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:54:54,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:54:54,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:54:54,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:54:54,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:54:54,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:54:54,260 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:54:54,260 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:54:54,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:54:54,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:54:54,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:54:54,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:54:54,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:54:54,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:54:54,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:54:54,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:54:54,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:54:54,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:54:54,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:54:54,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:54:54,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:54:54,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:54:54,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:54:54,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:54:54,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:54:54,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:54:54,746 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:54:54,747 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:54:54,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2020-10-28 08:54:54,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58b624b8e/1822a267b60846598a2201f1509948cc/FLAGecdf4de7b [2020-10-28 08:54:55,466 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:54:55,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2020-10-28 08:54:55,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58b624b8e/1822a267b60846598a2201f1509948cc/FLAGecdf4de7b [2020-10-28 08:54:55,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58b624b8e/1822a267b60846598a2201f1509948cc [2020-10-28 08:54:55,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:54:55,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:54:55,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:54:55,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:54:55,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:54:55,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:54:55" (1/1) ... [2020-10-28 08:54:55,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfcb8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:55, skipping insertion in model container [2020-10-28 08:54:55,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:54:55" (1/1) ... [2020-10-28 08:54:55,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:54:55,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:54:56,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:54:56,172 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:54:56,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:54:56,218 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:54:56,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56 WrapperNode [2020-10-28 08:54:56,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:54:56,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:54:56,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:54:56,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:54:56,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56" (1/1) ... [2020-10-28 08:54:56,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56" (1/1) ... [2020-10-28 08:54:56,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56" (1/1) ... [2020-10-28 08:54:56,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56" (1/1) ... [2020-10-28 08:54:56,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56" (1/1) ... [2020-10-28 08:54:56,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56" (1/1) ... [2020-10-28 08:54:56,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56" (1/1) ... [2020-10-28 08:54:56,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:54:56,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:54:56,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:54:56,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:54:56,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:54:56,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:54:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:54:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:54:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 08:54:56,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:54:56,358 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:54:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:54:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:54:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:54:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:54:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:54:56,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 08:54:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:54:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:54:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:54:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:54:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:54:56,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:54:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:54:56,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:54:56,924 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:54:56,925 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-28 08:54:56,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:54:56 BoogieIcfgContainer [2020-10-28 08:54:56,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:54:56,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:54:56,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:54:56,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:54:56,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:54:55" (1/3) ... [2020-10-28 08:54:56,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14565231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:54:56, skipping insertion in model container [2020-10-28 08:54:56,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:54:56" (2/3) ... [2020-10-28 08:54:56,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14565231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:54:56, skipping insertion in model container [2020-10-28 08:54:56,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:54:56" (3/3) ... [2020-10-28 08:54:56,937 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-2.i [2020-10-28 08:54:56,949 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:54:56,955 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:54:56,969 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:54:56,997 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:54:56,997 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:54:56,997 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:54:56,997 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:54:56,998 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:54:56,998 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:54:56,998 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:54:56,998 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:54:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-28 08:54:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 08:54:57,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:54:57,023 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] [2020-10-28 08:54:57,024 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:54:57,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:54:57,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1163458024, now seen corresponding path program 1 times [2020-10-28 08:54:57,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:54:57,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776959500] [2020-10-28 08:54:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:54:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:54:57,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:57,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:57,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:57,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:57,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:58,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:54:58,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 08:54:58,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:54:58,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1693 [2020-10-28 08:54:58,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:54:58,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:54:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:54:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 08:54:58,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:54:58,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:54:58,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:54:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:54:59,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:59,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:54:59,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:54:59,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:54:59,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 08:54:59,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:54:59,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:54:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:54:59,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:54:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:54:59,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:54:59,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:54:59,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776959500] [2020-10-28 08:54:59,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:54:59,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 08:54:59,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922329078] [2020-10-28 08:54:59,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:54:59,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:54:59,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:54:59,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:54:59,073 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 3 states. [2020-10-28 08:54:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:54:59,238 INFO L93 Difference]: Finished difference Result 83 states and 117 transitions. [2020-10-28 08:54:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:54:59,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-28 08:54:59,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:54:59,257 INFO L225 Difference]: With dead ends: 83 [2020-10-28 08:54:59,257 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 08:54:59,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:54:59,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 08:54:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-28 08:54:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 08:54:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-10-28 08:54:59,319 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 27 [2020-10-28 08:54:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:54:59,320 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-10-28 08:54:59,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:54:59,320 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-10-28 08:54:59,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 08:54:59,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:54:59,323 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] [2020-10-28 08:54:59,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:54:59,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:54:59,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:54:59,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1189623162, now seen corresponding path program 1 times [2020-10-28 08:54:59,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:54:59,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927031790] [2020-10-28 08:54:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:54:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:54:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:59,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:59,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:54:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:02,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:02,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 08:55:02,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:55:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2961 [2020-10-28 08:55:02,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:02,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:55:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 08:55:02,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:55:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:55:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:02,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:02,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:02,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 08:55:02,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:02,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:02,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:02,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:02,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:55:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:55:02,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927031790] [2020-10-28 08:55:02,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:55:02,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:55:02,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915667153] [2020-10-28 08:55:02,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:55:02,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:02,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:55:02,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:55:02,419 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 4 states. [2020-10-28 08:55:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:02,632 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2020-10-28 08:55:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:55:02,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-28 08:55:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:02,636 INFO L225 Difference]: With dead ends: 79 [2020-10-28 08:55:02,636 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 08:55:02,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:55:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 08:55:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-10-28 08:55:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 08:55:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-28 08:55:02,658 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 27 [2020-10-28 08:55:02,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:02,659 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-28 08:55:02,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:55:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-28 08:55:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 08:55:02,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:02,662 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] [2020-10-28 08:55:02,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:55:02,662 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:02,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1296943878, now seen corresponding path program 1 times [2020-10-28 08:55:02,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:02,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548277177] [2020-10-28 08:55:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:02,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:02,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:02,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:07,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:07,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 08:55:07,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:55:07,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 08:55:07,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:07,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:07,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:55:07,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 08:55:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:55:07,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:07,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:07,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:07,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:07,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:07,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:55:07,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:07,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 08:55:07,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548277177] [2020-10-28 08:55:07,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:55:07,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:55:07,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744455877] [2020-10-28 08:55:07,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:55:07,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:07,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:55:07,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:55:07,803 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-10-28 08:55:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:08,035 INFO L93 Difference]: Finished difference Result 96 states and 114 transitions. [2020-10-28 08:55:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:55:08,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-28 08:55:08,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:08,037 INFO L225 Difference]: With dead ends: 96 [2020-10-28 08:55:08,038 INFO L226 Difference]: Without dead ends: 63 [2020-10-28 08:55:08,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:55:08,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-28 08:55:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-10-28 08:55:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 08:55:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-28 08:55:08,064 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 39 [2020-10-28 08:55:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:08,065 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-28 08:55:08,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:55:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-28 08:55:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 08:55:08,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:08,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:55:08,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:55:08,070 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:08,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:08,071 INFO L82 PathProgramCache]: Analyzing trace with hash -655793810, now seen corresponding path program 2 times [2020-10-28 08:55:08,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:08,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276693969] [2020-10-28 08:55:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:08,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:08,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:08,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:08,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:11,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:13,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:13,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-28 08:55:13,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:55:13,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 08:55:13,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:13,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:55:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:55:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:55:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 08:55:13,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:13,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:13,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:13,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:13,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:55:13,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:13,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:13,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:13,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:13,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 08:55:13,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276693969] [2020-10-28 08:55:13,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:55:13,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:55:13,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101762563] [2020-10-28 08:55:13,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:55:13,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:13,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:55:13,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:55:13,171 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 4 states. [2020-10-28 08:55:13,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:13,318 INFO L93 Difference]: Finished difference Result 108 states and 122 transitions. [2020-10-28 08:55:13,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:55:13,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-28 08:55:13,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:13,320 INFO L225 Difference]: With dead ends: 108 [2020-10-28 08:55:13,320 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 08:55:13,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:55:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 08:55:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2020-10-28 08:55:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 08:55:13,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-28 08:55:13,335 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 51 [2020-10-28 08:55:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:13,335 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-28 08:55:13,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:55:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-28 08:55:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 08:55:13,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:13,340 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 08:55:13,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:55:13,340 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:13,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:13,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2114363596, now seen corresponding path program 1 times [2020-10-28 08:55:13,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:13,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333701998] [2020-10-28 08:55:13,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:13,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:13,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:13,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:17,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:18,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:18,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 08:55:18,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 08:55:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 08:55:18,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:18,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:55:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 08:55:18,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:55:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:55:18,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:18,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:18,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:18,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:18,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:55:18,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:18,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:18,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 08:55:18,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333701998] [2020-10-28 08:55:18,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:55:18,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:55:18,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158187421] [2020-10-28 08:55:18,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:55:18,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:18,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:55:18,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:55:18,454 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 6 states. [2020-10-28 08:55:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:18,710 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2020-10-28 08:55:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:55:18,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-10-28 08:55:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:18,712 INFO L225 Difference]: With dead ends: 119 [2020-10-28 08:55:18,712 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 08:55:18,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:55:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 08:55:18,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2020-10-28 08:55:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 08:55:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-10-28 08:55:18,723 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 53 [2020-10-28 08:55:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:18,723 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-10-28 08:55:18,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:55:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-10-28 08:55:18,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 08:55:18,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:18,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:55:18,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:55:18,726 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:18,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:18,726 INFO L82 PathProgramCache]: Analyzing trace with hash 203518528, now seen corresponding path program 2 times [2020-10-28 08:55:18,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:18,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704219344] [2020-10-28 08:55:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:18,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:18,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:18,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:23,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:23,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 08:55:23,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:55:23,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 08:55:23,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:23,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:55:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:55:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:55:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:55:23,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:23,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:23,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:23,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:55:23,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:23,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:23,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:23,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-28 08:55:23,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704219344] [2020-10-28 08:55:23,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:55:23,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:55:23,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673805282] [2020-10-28 08:55:23,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:55:23,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:23,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:55:23,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:55:23,839 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 5 states. [2020-10-28 08:55:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:23,967 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2020-10-28 08:55:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:55:23,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-28 08:55:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:23,970 INFO L225 Difference]: With dead ends: 134 [2020-10-28 08:55:23,970 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 08:55:23,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:55:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 08:55:23,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-28 08:55:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 08:55:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-10-28 08:55:23,988 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 65 [2020-10-28 08:55:23,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:23,989 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-10-28 08:55:23,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:55:23,989 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-10-28 08:55:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 08:55:23,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:23,990 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:55:23,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:55:23,990 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:23,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:23,993 INFO L82 PathProgramCache]: Analyzing trace with hash -130714338, now seen corresponding path program 3 times [2020-10-28 08:55:23,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:23,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392261766] [2020-10-28 08:55:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:24,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:24,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:24,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:24,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:29,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:29,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 08:55:29,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 08:55:29,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 08:55:29,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:29,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:55:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:55:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:55:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:55:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:29,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:29,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:29,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:29,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:29,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:55:29,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:29,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:29,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:29,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 08:55:29,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392261766] [2020-10-28 08:55:29,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:55:29,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:55:29,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709871004] [2020-10-28 08:55:29,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:55:29,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:55:29,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:55:29,143 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 7 states. [2020-10-28 08:55:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:29,395 INFO L93 Difference]: Finished difference Result 143 states and 161 transitions. [2020-10-28 08:55:29,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:55:29,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-10-28 08:55:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:29,397 INFO L225 Difference]: With dead ends: 143 [2020-10-28 08:55:29,397 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 08:55:29,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:55:29,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 08:55:29,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2020-10-28 08:55:29,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-28 08:55:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2020-10-28 08:55:29,419 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 67 [2020-10-28 08:55:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:29,420 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2020-10-28 08:55:29,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:55:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2020-10-28 08:55:29,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 08:55:29,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:29,425 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:55:29,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:55:29,428 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:29,428 INFO L82 PathProgramCache]: Analyzing trace with hash 998189970, now seen corresponding path program 4 times [2020-10-28 08:55:29,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:29,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670906910] [2020-10-28 08:55:29,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:29,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:29,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:29,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:29,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:34,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:34,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 08:55:34,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:55:34,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 08:55:34,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:34,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:34,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:55:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 08:55:34,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:55:34,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:34,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:34,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:34,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:34,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:55:34,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:34,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:34,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 08:55:34,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670906910] [2020-10-28 08:55:34,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:55:34,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:55:34,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071088153] [2020-10-28 08:55:34,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:55:34,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:34,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:55:34,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:55:34,578 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand 8 states. [2020-10-28 08:55:34,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:34,827 INFO L93 Difference]: Finished difference Result 165 states and 183 transitions. [2020-10-28 08:55:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:55:34,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-10-28 08:55:34,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:34,829 INFO L225 Difference]: With dead ends: 165 [2020-10-28 08:55:34,829 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 08:55:34,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:55:34,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 08:55:34,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2020-10-28 08:55:34,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-28 08:55:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-10-28 08:55:34,840 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 79 [2020-10-28 08:55:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:34,840 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-10-28 08:55:34,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:55:34,840 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-10-28 08:55:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 08:55:34,842 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:34,842 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:55:34,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:55:34,842 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:34,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:34,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1690328058, now seen corresponding path program 5 times [2020-10-28 08:55:34,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:34,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114773713] [2020-10-28 08:55:34,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:34,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:35,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:39,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 08:55:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:55:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 08:55:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:39,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:55:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:55:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:55:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:39,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:39,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:39,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:39,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:39,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:55:39,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:39,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:39,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-28 08:55:39,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114773713] [2020-10-28 08:55:39,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:55:39,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:55:39,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140572090] [2020-10-28 08:55:39,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:55:39,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:39,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:55:39,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:55:39,962 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 6 states. [2020-10-28 08:55:40,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:40,078 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2020-10-28 08:55:40,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:55:40,079 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-28 08:55:40,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:40,080 INFO L225 Difference]: With dead ends: 184 [2020-10-28 08:55:40,081 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 08:55:40,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:55:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 08:55:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-28 08:55:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 08:55:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2020-10-28 08:55:40,090 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 91 [2020-10-28 08:55:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:40,090 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2020-10-28 08:55:40,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:55:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2020-10-28 08:55:40,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 08:55:40,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:40,092 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:55:40,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:55:40,092 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:40,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:40,093 INFO L82 PathProgramCache]: Analyzing trace with hash 750890340, now seen corresponding path program 6 times [2020-10-28 08:55:40,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:40,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804611255] [2020-10-28 08:55:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:40,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:40,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:40,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:40,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:45,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:45,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 08:55:45,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:55:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 08:55:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:45,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:55:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:55:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:55:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:45,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:45,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:45,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:45,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:45,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:55:45,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:45,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:45,253 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-10-28 08:55:45,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804611255] [2020-10-28 08:55:45,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:55:45,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:55:45,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967828405] [2020-10-28 08:55:45,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:55:45,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:45,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:55:45,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:55:45,257 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 9 states. [2020-10-28 08:55:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:45,618 INFO L93 Difference]: Finished difference Result 189 states and 207 transitions. [2020-10-28 08:55:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:55:45,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-10-28 08:55:45,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:45,621 INFO L225 Difference]: With dead ends: 189 [2020-10-28 08:55:45,621 INFO L226 Difference]: Without dead ends: 116 [2020-10-28 08:55:45,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:55:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-28 08:55:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2020-10-28 08:55:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-28 08:55:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 117 transitions. [2020-10-28 08:55:45,639 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 117 transitions. Word has length 93 [2020-10-28 08:55:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:45,642 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 117 transitions. [2020-10-28 08:55:45,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:55:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 117 transitions. [2020-10-28 08:55:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 08:55:45,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:45,651 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:55:45,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:55:45,651 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:45,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:45,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1319056680, now seen corresponding path program 7 times [2020-10-28 08:55:45,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:45,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887828693] [2020-10-28 08:55:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:45,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:45,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:45,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:45,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:50,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:50,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 08:55:50,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:55:50,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 08:55:50,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:50,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:55:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 08:55:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:55:50,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:50,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:50,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:50,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:50,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:55:50,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:50,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-28 08:55:50,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887828693] [2020-10-28 08:55:50,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:55:50,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:55:50,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289053253] [2020-10-28 08:55:50,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:55:50,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:50,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:55:50,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:55:50,831 INFO L87 Difference]: Start difference. First operand 110 states and 117 transitions. Second operand 10 states. [2020-10-28 08:55:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:51,120 INFO L93 Difference]: Finished difference Result 211 states and 229 transitions. [2020-10-28 08:55:51,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:55:51,120 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-10-28 08:55:51,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:51,121 INFO L225 Difference]: With dead ends: 211 [2020-10-28 08:55:51,122 INFO L226 Difference]: Without dead ends: 128 [2020-10-28 08:55:51,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:55:51,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-28 08:55:51,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 122. [2020-10-28 08:55:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-28 08:55:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2020-10-28 08:55:51,135 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 105 [2020-10-28 08:55:51,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:51,135 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2020-10-28 08:55:51,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:55:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2020-10-28 08:55:51,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 08:55:51,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:51,137 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:55:51,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:55:51,137 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:51,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:51,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1406937676, now seen corresponding path program 8 times [2020-10-28 08:55:51,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:51,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562845533] [2020-10-28 08:55:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:51,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:51,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:51,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:56,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:56,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 08:55:56,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:55:56,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 08:55:56,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:56,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:55:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:55:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:55:56,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:56,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:55:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:56,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:55:56,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:55:56,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:55:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:55:56,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:55:56,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:55:56,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:55:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:55:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:55:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:55:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-10-28 08:55:56,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562845533] [2020-10-28 08:55:56,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:55:56,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:55:56,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771335320] [2020-10-28 08:55:56,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:55:56,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:55:56,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:55:56,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:55:56,266 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand 7 states. [2020-10-28 08:55:56,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:55:56,395 INFO L93 Difference]: Finished difference Result 234 states and 248 transitions. [2020-10-28 08:55:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:55:56,395 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-28 08:55:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:55:56,396 INFO L225 Difference]: With dead ends: 234 [2020-10-28 08:55:56,396 INFO L226 Difference]: Without dead ends: 125 [2020-10-28 08:55:56,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:55:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-28 08:55:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2020-10-28 08:55:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-28 08:55:56,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 131 transitions. [2020-10-28 08:55:56,404 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 131 transitions. Word has length 117 [2020-10-28 08:55:56,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:55:56,404 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 131 transitions. [2020-10-28 08:55:56,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:55:56,404 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 131 transitions. [2020-10-28 08:55:56,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 08:55:56,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:55:56,406 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:55:56,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:55:56,406 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:55:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:55:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash 205068842, now seen corresponding path program 9 times [2020-10-28 08:55:56,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:55:56,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280140546] [2020-10-28 08:55:56,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:55:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:55:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:56,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:56,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:55:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:01,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:01,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 08:56:01,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:01,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 08:56:01,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:01,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:56:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 08:56:01,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:56:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:01,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:01,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:01,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:01,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:01,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:01,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:01,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:01,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:01,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:01,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-28 08:56:01,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280140546] [2020-10-28 08:56:01,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:01,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:56:01,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966669940] [2020-10-28 08:56:01,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:56:01,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:01,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:56:01,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:56:01,579 INFO L87 Difference]: Start difference. First operand 124 states and 131 transitions. Second operand 11 states. [2020-10-28 08:56:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:01,956 INFO L93 Difference]: Finished difference Result 235 states and 253 transitions. [2020-10-28 08:56:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:56:01,957 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 119 [2020-10-28 08:56:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:01,958 INFO L225 Difference]: With dead ends: 235 [2020-10-28 08:56:01,958 INFO L226 Difference]: Without dead ends: 142 [2020-10-28 08:56:01,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:56:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-28 08:56:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2020-10-28 08:56:01,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-28 08:56:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 143 transitions. [2020-10-28 08:56:01,971 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 143 transitions. Word has length 119 [2020-10-28 08:56:01,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:01,971 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 143 transitions. [2020-10-28 08:56:01,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:56:01,971 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 143 transitions. [2020-10-28 08:56:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 08:56:01,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:01,973 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:01,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:56:01,973 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:01,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1695735454, now seen corresponding path program 10 times [2020-10-28 08:56:01,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:01,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016151793] [2020-10-28 08:56:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:02,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:02,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:02,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:02,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:07,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:07,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 08:56:07,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:07,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 08:56:07,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:07,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:56:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:56:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:56:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:07,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:07,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:07,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:07,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:07,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:07,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:07,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:07,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:07,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:07,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:07,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2020-10-28 08:56:07,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016151793] [2020-10-28 08:56:07,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:07,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:56:07,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168794244] [2020-10-28 08:56:07,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:56:07,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:07,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:56:07,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:56:07,113 INFO L87 Difference]: Start difference. First operand 136 states and 143 transitions. Second operand 8 states. [2020-10-28 08:56:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:07,223 INFO L93 Difference]: Finished difference Result 260 states and 274 transitions. [2020-10-28 08:56:07,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:56:07,224 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-28 08:56:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:07,225 INFO L225 Difference]: With dead ends: 260 [2020-10-28 08:56:07,225 INFO L226 Difference]: Without dead ends: 139 [2020-10-28 08:56:07,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:56:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-28 08:56:07,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2020-10-28 08:56:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-28 08:56:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 145 transitions. [2020-10-28 08:56:07,235 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 145 transitions. Word has length 131 [2020-10-28 08:56:07,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:07,235 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 145 transitions. [2020-10-28 08:56:07,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:56:07,235 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 145 transitions. [2020-10-28 08:56:07,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 08:56:07,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:07,237 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:07,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:56:07,237 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:07,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:07,238 INFO L82 PathProgramCache]: Analyzing trace with hash 283619836, now seen corresponding path program 11 times [2020-10-28 08:56:07,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:07,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023577781] [2020-10-28 08:56:07,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:07,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:07,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:07,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:12,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:12,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 08:56:12,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 08:56:12,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:12,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:56:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 08:56:12,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:56:12,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:12,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:12,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:12,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:12,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:12,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:12,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:12,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:12,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:12,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:12,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:12,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-10-28 08:56:12,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023577781] [2020-10-28 08:56:12,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:12,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:56:12,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302113445] [2020-10-28 08:56:12,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:56:12,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:12,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:56:12,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:56:12,406 INFO L87 Difference]: Start difference. First operand 138 states and 145 transitions. Second operand 12 states. [2020-10-28 08:56:12,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:12,811 INFO L93 Difference]: Finished difference Result 259 states and 277 transitions. [2020-10-28 08:56:12,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:56:12,812 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 133 [2020-10-28 08:56:12,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:12,814 INFO L225 Difference]: With dead ends: 259 [2020-10-28 08:56:12,814 INFO L226 Difference]: Without dead ends: 156 [2020-10-28 08:56:12,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:56:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-28 08:56:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2020-10-28 08:56:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 08:56:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 157 transitions. [2020-10-28 08:56:12,822 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 157 transitions. Word has length 133 [2020-10-28 08:56:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:12,823 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 157 transitions. [2020-10-28 08:56:12,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:56:12,823 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 157 transitions. [2020-10-28 08:56:12,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 08:56:12,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:12,825 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:12,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:56:12,825 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:12,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:12,826 INFO L82 PathProgramCache]: Analyzing trace with hash 60496752, now seen corresponding path program 12 times [2020-10-28 08:56:12,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:12,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100642082] [2020-10-28 08:56:12,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:12,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:12,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:12,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:13,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:17,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:17,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 08:56:17,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:17,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 08:56:17,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:17,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:56:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 08:56:17,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:56:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:18,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:18,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:18,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:18,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:18,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:18,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:18,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:18,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:18,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:18,072 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2020-10-28 08:56:18,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100642082] [2020-10-28 08:56:18,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:18,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:56:18,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465967989] [2020-10-28 08:56:18,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:56:18,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:18,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:56:18,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:56:18,074 INFO L87 Difference]: Start difference. First operand 150 states and 157 transitions. Second operand 13 states. [2020-10-28 08:56:18,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:18,485 INFO L93 Difference]: Finished difference Result 281 states and 299 transitions. [2020-10-28 08:56:18,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:56:18,485 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 145 [2020-10-28 08:56:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:18,487 INFO L225 Difference]: With dead ends: 281 [2020-10-28 08:56:18,487 INFO L226 Difference]: Without dead ends: 168 [2020-10-28 08:56:18,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:56:18,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-28 08:56:18,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 162. [2020-10-28 08:56:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-28 08:56:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 169 transitions. [2020-10-28 08:56:18,497 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 169 transitions. Word has length 145 [2020-10-28 08:56:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:18,497 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 169 transitions. [2020-10-28 08:56:18,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:56:18,498 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 169 transitions. [2020-10-28 08:56:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 08:56:18,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:18,500 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:18,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:56:18,500 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:18,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:18,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1199884004, now seen corresponding path program 13 times [2020-10-28 08:56:18,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:18,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464565720] [2020-10-28 08:56:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:18,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:18,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:18,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:18,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:18,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:23,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:23,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 08:56:23,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 08:56:23,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:23,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:56:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:56:23,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:56:23,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:23,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:23,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:23,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:23,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:23,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:23,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:23,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:23,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:23,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:23,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:23,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:23,624 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2020-10-28 08:56:23,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464565720] [2020-10-28 08:56:23,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:23,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:56:23,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332115116] [2020-10-28 08:56:23,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:56:23,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:23,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:56:23,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:56:23,626 INFO L87 Difference]: Start difference. First operand 162 states and 169 transitions. Second operand 9 states. [2020-10-28 08:56:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:23,759 INFO L93 Difference]: Finished difference Result 310 states and 324 transitions. [2020-10-28 08:56:23,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:56:23,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2020-10-28 08:56:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:23,761 INFO L225 Difference]: With dead ends: 310 [2020-10-28 08:56:23,761 INFO L226 Difference]: Without dead ends: 165 [2020-10-28 08:56:23,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:56:23,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-28 08:56:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2020-10-28 08:56:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-28 08:56:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 171 transitions. [2020-10-28 08:56:23,769 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 171 transitions. Word has length 157 [2020-10-28 08:56:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:23,769 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 171 transitions. [2020-10-28 08:56:23,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:56:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 171 transitions. [2020-10-28 08:56:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 08:56:23,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:23,771 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:23,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:56:23,772 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:23,772 INFO L82 PathProgramCache]: Analyzing trace with hash -286523198, now seen corresponding path program 14 times [2020-10-28 08:56:23,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:23,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339815513] [2020-10-28 08:56:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:23,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:23,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:28,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:28,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 08:56:28,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:28,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-28 08:56:28,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:28,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:56:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 08:56:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:56:28,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:28,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:28,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:28,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:28,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:28,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:28,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:28,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2020-10-28 08:56:29,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339815513] [2020-10-28 08:56:29,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:29,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:56:29,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146041577] [2020-10-28 08:56:29,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:56:29,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:29,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:56:29,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:56:29,012 INFO L87 Difference]: Start difference. First operand 164 states and 171 transitions. Second operand 14 states. [2020-10-28 08:56:29,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:29,478 INFO L93 Difference]: Finished difference Result 305 states and 323 transitions. [2020-10-28 08:56:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:56:29,479 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 159 [2020-10-28 08:56:29,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:29,481 INFO L225 Difference]: With dead ends: 305 [2020-10-28 08:56:29,481 INFO L226 Difference]: Without dead ends: 182 [2020-10-28 08:56:29,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:56:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-28 08:56:29,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2020-10-28 08:56:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-28 08:56:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 183 transitions. [2020-10-28 08:56:29,491 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 183 transitions. Word has length 159 [2020-10-28 08:56:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:29,491 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 183 transitions. [2020-10-28 08:56:29,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:56:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 183 transitions. [2020-10-28 08:56:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 08:56:29,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:29,493 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:29,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:56:29,494 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:29,494 INFO L82 PathProgramCache]: Analyzing trace with hash 493818166, now seen corresponding path program 15 times [2020-10-28 08:56:29,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:29,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271137566] [2020-10-28 08:56:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:29,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:29,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:30,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:34,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:34,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 08:56:34,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:34,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 08:56:34,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:34,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:56:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:56:34,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:56:34,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:34,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:34,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:34,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:34,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:34,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:34,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:34,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:34,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:34,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2020-10-28 08:56:34,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271137566] [2020-10-28 08:56:34,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:34,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:56:34,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447673520] [2020-10-28 08:56:34,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:56:34,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:34,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:56:34,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:56:34,679 INFO L87 Difference]: Start difference. First operand 176 states and 183 transitions. Second operand 10 states. [2020-10-28 08:56:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:34,821 INFO L93 Difference]: Finished difference Result 336 states and 350 transitions. [2020-10-28 08:56:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:56:34,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 171 [2020-10-28 08:56:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:34,825 INFO L225 Difference]: With dead ends: 336 [2020-10-28 08:56:34,826 INFO L226 Difference]: Without dead ends: 179 [2020-10-28 08:56:34,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:56:34,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-28 08:56:34,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2020-10-28 08:56:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 08:56:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 185 transitions. [2020-10-28 08:56:34,844 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 185 transitions. Word has length 171 [2020-10-28 08:56:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:34,844 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 185 transitions. [2020-10-28 08:56:34,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:56:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 185 transitions. [2020-10-28 08:56:34,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 08:56:34,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:34,849 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:34,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:56:34,849 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:34,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:34,849 INFO L82 PathProgramCache]: Analyzing trace with hash 193244820, now seen corresponding path program 16 times [2020-10-28 08:56:34,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:34,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310882239] [2020-10-28 08:56:34,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:34,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:40,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:40,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 08:56:40,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-28 08:56:40,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:40,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:56:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 08:56:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:56:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:40,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:40,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 775 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2020-10-28 08:56:40,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310882239] [2020-10-28 08:56:40,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:40,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:56:40,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858410679] [2020-10-28 08:56:40,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:56:40,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:40,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:56:40,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:56:40,239 INFO L87 Difference]: Start difference. First operand 178 states and 185 transitions. Second operand 15 states. [2020-10-28 08:56:40,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:40,685 INFO L93 Difference]: Finished difference Result 329 states and 347 transitions. [2020-10-28 08:56:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:56:40,686 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 173 [2020-10-28 08:56:40,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:40,687 INFO L225 Difference]: With dead ends: 329 [2020-10-28 08:56:40,688 INFO L226 Difference]: Without dead ends: 196 [2020-10-28 08:56:40,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:56:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-28 08:56:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 190. [2020-10-28 08:56:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-28 08:56:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 197 transitions. [2020-10-28 08:56:40,710 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 197 transitions. Word has length 173 [2020-10-28 08:56:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:40,710 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 197 transitions. [2020-10-28 08:56:40,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:56:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 197 transitions. [2020-10-28 08:56:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 08:56:40,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:40,715 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:40,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:56:40,716 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:40,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:40,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1088185352, now seen corresponding path program 17 times [2020-10-28 08:56:40,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:40,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088191662] [2020-10-28 08:56:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:40,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:40,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:43,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:45,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-28 08:56:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-28 08:56:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:45,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:56:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 08:56:45,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:56:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:46,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:46,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:46,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:46,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:46,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:46,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:46,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2020-10-28 08:56:46,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088191662] [2020-10-28 08:56:46,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:46,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:56:46,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952895444] [2020-10-28 08:56:46,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:56:46,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:46,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:56:46,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:56:46,047 INFO L87 Difference]: Start difference. First operand 190 states and 197 transitions. Second operand 16 states. [2020-10-28 08:56:46,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:46,484 INFO L93 Difference]: Finished difference Result 351 states and 369 transitions. [2020-10-28 08:56:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:56:46,484 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 185 [2020-10-28 08:56:46,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:46,487 INFO L225 Difference]: With dead ends: 351 [2020-10-28 08:56:46,487 INFO L226 Difference]: Without dead ends: 208 [2020-10-28 08:56:46,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:56:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-28 08:56:46,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2020-10-28 08:56:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-28 08:56:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 209 transitions. [2020-10-28 08:56:46,498 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 209 transitions. Word has length 185 [2020-10-28 08:56:46,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:46,498 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 209 transitions. [2020-10-28 08:56:46,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:56:46,499 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 209 transitions. [2020-10-28 08:56:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-28 08:56:46,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:46,500 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:46,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:56:46,500 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1480303748, now seen corresponding path program 18 times [2020-10-28 08:56:46,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:46,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152853451] [2020-10-28 08:56:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:46,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:49,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:51,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:51,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 08:56:51,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5205 [2020-10-28 08:56:51,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:51,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:56:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:56:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:56:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:51,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:51,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:51,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:56:51,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:51,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:51,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1014 trivial. 0 not checked. [2020-10-28 08:56:51,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152853451] [2020-10-28 08:56:51,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:51,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:56:51,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429525528] [2020-10-28 08:56:51,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:56:51,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:51,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:56:51,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:56:51,866 INFO L87 Difference]: Start difference. First operand 202 states and 209 transitions. Second operand 11 states. [2020-10-28 08:56:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:52,017 INFO L93 Difference]: Finished difference Result 386 states and 400 transitions. [2020-10-28 08:56:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:56:52,021 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 197 [2020-10-28 08:56:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:52,022 INFO L225 Difference]: With dead ends: 386 [2020-10-28 08:56:52,022 INFO L226 Difference]: Without dead ends: 205 [2020-10-28 08:56:52,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:56:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-28 08:56:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2020-10-28 08:56:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-28 08:56:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 211 transitions. [2020-10-28 08:56:52,038 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 211 transitions. Word has length 197 [2020-10-28 08:56:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:52,039 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 211 transitions. [2020-10-28 08:56:52,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:56:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 211 transitions. [2020-10-28 08:56:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-28 08:56:52,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:52,041 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:52,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:56:52,041 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:52,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:52,041 INFO L82 PathProgramCache]: Analyzing trace with hash 950263642, now seen corresponding path program 19 times [2020-10-28 08:56:52,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:52,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500178248] [2020-10-28 08:56:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:52,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:57,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:57,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-28 08:56:57,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:56:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5214 [2020-10-28 08:56:57,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:57,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:56:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 08:56:57,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:56:57,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:57,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:56:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:57,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:56:57,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:56:57,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:56:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:56:57,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:56:57,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:56:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:56:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:56:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:56:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:56:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2020-10-28 08:56:57,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500178248] [2020-10-28 08:56:57,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:56:57,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:56:57,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661358159] [2020-10-28 08:56:57,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:56:57,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:56:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:56:57,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:56:57,517 INFO L87 Difference]: Start difference. First operand 204 states and 211 transitions. Second operand 17 states. [2020-10-28 08:56:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:56:58,074 INFO L93 Difference]: Finished difference Result 375 states and 393 transitions. [2020-10-28 08:56:58,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:56:58,075 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 199 [2020-10-28 08:56:58,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:56:58,076 INFO L225 Difference]: With dead ends: 375 [2020-10-28 08:56:58,076 INFO L226 Difference]: Without dead ends: 222 [2020-10-28 08:56:58,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:56:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-28 08:56:58,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 216. [2020-10-28 08:56:58,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-28 08:56:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 223 transitions. [2020-10-28 08:56:58,087 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 223 transitions. Word has length 199 [2020-10-28 08:56:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:56:58,087 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 223 transitions. [2020-10-28 08:56:58,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:56:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 223 transitions. [2020-10-28 08:56:58,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-28 08:56:58,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:56:58,089 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:56:58,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:56:58,089 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:56:58,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:56:58,090 INFO L82 PathProgramCache]: Analyzing trace with hash -161465394, now seen corresponding path program 20 times [2020-10-28 08:56:58,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:56:58,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148507192] [2020-10-28 08:56:58,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:56:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:56:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:56:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:02,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:03,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:03,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-28 08:57:03,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:57:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 08:57:03,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:03,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:57:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 08:57:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 08:57:03,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:03,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:03,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:03,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:03,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:03,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:57:03,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:03,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2020-10-28 08:57:03,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148507192] [2020-10-28 08:57:03,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:03,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:57:03,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245457973] [2020-10-28 08:57:03,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:57:03,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:03,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:57:03,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:57:03,437 INFO L87 Difference]: Start difference. First operand 216 states and 223 transitions. Second operand 18 states. [2020-10-28 08:57:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:03,989 INFO L93 Difference]: Finished difference Result 397 states and 415 transitions. [2020-10-28 08:57:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 08:57:03,990 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 211 [2020-10-28 08:57:03,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:03,991 INFO L225 Difference]: With dead ends: 397 [2020-10-28 08:57:03,992 INFO L226 Difference]: Without dead ends: 234 [2020-10-28 08:57:03,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:57:03,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-28 08:57:04,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2020-10-28 08:57:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-28 08:57:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 235 transitions. [2020-10-28 08:57:04,002 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 235 transitions. Word has length 211 [2020-10-28 08:57:04,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:04,002 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 235 transitions. [2020-10-28 08:57:04,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:57:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 235 transitions. [2020-10-28 08:57:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-28 08:57:04,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:04,004 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:04,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:57:04,006 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:04,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:04,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1513249346, now seen corresponding path program 21 times [2020-10-28 08:57:04,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:04,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825075673] [2020-10-28 08:57:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:04,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:04,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:04,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:07,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:09,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:09,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-28 08:57:09,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:57:09,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 08:57:09,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:09,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:57:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:57:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:57:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:09,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:09,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:09,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:09,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:09,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:57:09,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:09,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:09,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:09,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1414 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1350 trivial. 0 not checked. [2020-10-28 08:57:09,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825075673] [2020-10-28 08:57:09,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:09,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:57:09,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304647270] [2020-10-28 08:57:09,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:57:09,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:09,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:57:09,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:57:09,236 INFO L87 Difference]: Start difference. First operand 228 states and 235 transitions. Second operand 12 states. [2020-10-28 08:57:09,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:09,394 INFO L93 Difference]: Finished difference Result 436 states and 450 transitions. [2020-10-28 08:57:09,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:57:09,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 223 [2020-10-28 08:57:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:09,396 INFO L225 Difference]: With dead ends: 436 [2020-10-28 08:57:09,396 INFO L226 Difference]: Without dead ends: 231 [2020-10-28 08:57:09,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:57:09,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-28 08:57:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 230. [2020-10-28 08:57:09,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-28 08:57:09,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 237 transitions. [2020-10-28 08:57:09,408 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 237 transitions. Word has length 223 [2020-10-28 08:57:09,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:09,408 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 237 transitions. [2020-10-28 08:57:09,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:57:09,408 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 237 transitions. [2020-10-28 08:57:09,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-28 08:57:09,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:09,410 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:09,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 08:57:09,410 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:09,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:09,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1305434976, now seen corresponding path program 22 times [2020-10-28 08:57:09,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:09,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129610352] [2020-10-28 08:57:09,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:09,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:09,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:09,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:09,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:14,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:14,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-28 08:57:14,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:57:14,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 08:57:14,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:14,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 08:57:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 08:57:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 08:57:14,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:14,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:14,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:14,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:14,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:14,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:14,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:57:14,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:14,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:14,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:14,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2020-10-28 08:57:14,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129610352] [2020-10-28 08:57:14,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:14,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 08:57:14,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976486725] [2020-10-28 08:57:14,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 08:57:14,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:14,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 08:57:14,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:57:14,744 INFO L87 Difference]: Start difference. First operand 230 states and 237 transitions. Second operand 19 states. [2020-10-28 08:57:15,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:15,290 INFO L93 Difference]: Finished difference Result 421 states and 439 transitions. [2020-10-28 08:57:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:57:15,290 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 225 [2020-10-28 08:57:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:15,292 INFO L225 Difference]: With dead ends: 421 [2020-10-28 08:57:15,292 INFO L226 Difference]: Without dead ends: 248 [2020-10-28 08:57:15,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 08:57:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-28 08:57:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 242. [2020-10-28 08:57:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-28 08:57:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 249 transitions. [2020-10-28 08:57:15,306 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 249 transitions. Word has length 225 [2020-10-28 08:57:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:15,306 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 249 transitions. [2020-10-28 08:57:15,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 08:57:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 249 transitions. [2020-10-28 08:57:15,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 08:57:15,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:15,309 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:15,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 08:57:15,309 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:15,313 INFO L82 PathProgramCache]: Analyzing trace with hash 447146004, now seen corresponding path program 23 times [2020-10-28 08:57:15,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:15,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447024775] [2020-10-28 08:57:15,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:15,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:15,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:15,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:20,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:20,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 08:57:20,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:57:20,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5193 [2020-10-28 08:57:20,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:20,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:20,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:57:20,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:57:20,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:57:20,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:20,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:20,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:20,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:20,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:57:20,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:20,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:20,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:20,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1617 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2020-10-28 08:57:20,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447024775] [2020-10-28 08:57:20,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:20,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:57:20,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964087670] [2020-10-28 08:57:20,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:57:20,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:20,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:57:20,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:57:20,719 INFO L87 Difference]: Start difference. First operand 242 states and 249 transitions. Second operand 13 states. [2020-10-28 08:57:20,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:20,855 INFO L93 Difference]: Finished difference Result 462 states and 476 transitions. [2020-10-28 08:57:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:57:20,856 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 237 [2020-10-28 08:57:20,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:20,857 INFO L225 Difference]: With dead ends: 462 [2020-10-28 08:57:20,857 INFO L226 Difference]: Without dead ends: 245 [2020-10-28 08:57:20,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:57:20,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-28 08:57:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2020-10-28 08:57:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-28 08:57:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 251 transitions. [2020-10-28 08:57:20,868 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 251 transitions. Word has length 237 [2020-10-28 08:57:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:20,868 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 251 transitions. [2020-10-28 08:57:20,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:57:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 251 transitions. [2020-10-28 08:57:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-28 08:57:20,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:20,870 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:20,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 08:57:20,870 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:20,870 INFO L82 PathProgramCache]: Analyzing trace with hash 158119410, now seen corresponding path program 24 times [2020-10-28 08:57:20,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:20,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635760890] [2020-10-28 08:57:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:20,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:21,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:21,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:25,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:26,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:26,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-28 08:57:26,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:57:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-28 08:57:26,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:26,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 08:57:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 08:57:26,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 08:57:26,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:26,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:26,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:26,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:26,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:26,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:26,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:57:26,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:26,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:26,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:26,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:26,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:26,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1636 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2020-10-28 08:57:26,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635760890] [2020-10-28 08:57:26,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:26,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 08:57:26,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692385723] [2020-10-28 08:57:26,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 08:57:26,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:26,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 08:57:26,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:57:26,399 INFO L87 Difference]: Start difference. First operand 244 states and 251 transitions. Second operand 20 states. [2020-10-28 08:57:27,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:27,001 INFO L93 Difference]: Finished difference Result 445 states and 463 transitions. [2020-10-28 08:57:27,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 08:57:27,002 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 239 [2020-10-28 08:57:27,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:27,004 INFO L225 Difference]: With dead ends: 445 [2020-10-28 08:57:27,005 INFO L226 Difference]: Without dead ends: 262 [2020-10-28 08:57:27,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:57:27,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-28 08:57:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2020-10-28 08:57:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-28 08:57:27,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 263 transitions. [2020-10-28 08:57:27,015 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 263 transitions. Word has length 239 [2020-10-28 08:57:27,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:27,016 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 263 transitions. [2020-10-28 08:57:27,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 08:57:27,016 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 263 transitions. [2020-10-28 08:57:27,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 08:57:27,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:27,018 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:27,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 08:57:27,018 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:27,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1393402266, now seen corresponding path program 25 times [2020-10-28 08:57:27,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:27,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283839396] [2020-10-28 08:57:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:32,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:32,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-28 08:57:32,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:57:32,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 08:57:32,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:32,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 08:57:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 08:57:32,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 08:57:32,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:32,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:32,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:32,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:32,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:32,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:57:32,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:32,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:32,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2020-10-28 08:57:32,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283839396] [2020-10-28 08:57:32,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:32,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 08:57:32,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795360242] [2020-10-28 08:57:32,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 08:57:32,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:32,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 08:57:32,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:57:32,473 INFO L87 Difference]: Start difference. First operand 256 states and 263 transitions. Second operand 21 states. [2020-10-28 08:57:33,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:33,127 INFO L93 Difference]: Finished difference Result 467 states and 485 transitions. [2020-10-28 08:57:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 08:57:33,127 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 251 [2020-10-28 08:57:33,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:33,129 INFO L225 Difference]: With dead ends: 467 [2020-10-28 08:57:33,129 INFO L226 Difference]: Without dead ends: 274 [2020-10-28 08:57:33,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:57:33,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-28 08:57:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 268. [2020-10-28 08:57:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-28 08:57:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 275 transitions. [2020-10-28 08:57:33,146 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 275 transitions. Word has length 251 [2020-10-28 08:57:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:33,146 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 275 transitions. [2020-10-28 08:57:33,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 08:57:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 275 transitions. [2020-10-28 08:57:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-28 08:57:33,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:33,150 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:33,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 08:57:33,151 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:33,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:33,151 INFO L82 PathProgramCache]: Analyzing trace with hash -93861670, now seen corresponding path program 26 times [2020-10-28 08:57:33,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:33,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504328489] [2020-10-28 08:57:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:33,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:33,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:33,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:38,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:57:38,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:57:38,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:57:38,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:38,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:38,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:38,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:38,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:38,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:38,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:57:38,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:38,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:38,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:57:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2044 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2020-10-28 08:57:38,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504328489] [2020-10-28 08:57:38,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:38,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:57:38,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148512046] [2020-10-28 08:57:38,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:57:38,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:38,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:57:38,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:57:38,466 INFO L87 Difference]: Start difference. First operand 268 states and 275 transitions. Second operand 14 states. [2020-10-28 08:57:38,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:38,631 INFO L93 Difference]: Finished difference Result 512 states and 526 transitions. [2020-10-28 08:57:38,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:57:38,631 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 263 [2020-10-28 08:57:38,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:38,634 INFO L225 Difference]: With dead ends: 512 [2020-10-28 08:57:38,634 INFO L226 Difference]: Without dead ends: 271 [2020-10-28 08:57:38,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:57:38,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-28 08:57:38,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2020-10-28 08:57:38,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-28 08:57:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 277 transitions. [2020-10-28 08:57:38,651 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 277 transitions. Word has length 263 [2020-10-28 08:57:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:38,651 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 277 transitions. [2020-10-28 08:57:38,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:57:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 277 transitions. [2020-10-28 08:57:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-28 08:57:38,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:38,654 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:38,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 08:57:38,654 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:38,656 INFO L82 PathProgramCache]: Analyzing trace with hash -341582536, now seen corresponding path program 27 times [2020-10-28 08:57:38,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:38,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061230061] [2020-10-28 08:57:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:38,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:38,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:39,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:45,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:45,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 08:57:45,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:57:45,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7127 [2020-10-28 08:57:45,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:45,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 08:57:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-28 08:57:45,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 08:57:45,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:46,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:46,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:46,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:46,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:57:46,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:46,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2065 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 1741 trivial. 0 not checked. [2020-10-28 08:57:46,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061230061] [2020-10-28 08:57:46,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:46,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 08:57:46,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080592188] [2020-10-28 08:57:46,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 08:57:46,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:46,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 08:57:46,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:57:46,235 INFO L87 Difference]: Start difference. First operand 270 states and 277 transitions. Second operand 22 states. [2020-10-28 08:57:46,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:46,798 INFO L93 Difference]: Finished difference Result 491 states and 509 transitions. [2020-10-28 08:57:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:57:46,799 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 265 [2020-10-28 08:57:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:46,801 INFO L225 Difference]: With dead ends: 491 [2020-10-28 08:57:46,801 INFO L226 Difference]: Without dead ends: 288 [2020-10-28 08:57:46,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:57:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-28 08:57:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 282. [2020-10-28 08:57:46,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-28 08:57:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 289 transitions. [2020-10-28 08:57:46,813 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 289 transitions. Word has length 265 [2020-10-28 08:57:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:46,814 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 289 transitions. [2020-10-28 08:57:46,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 08:57:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 289 transitions. [2020-10-28 08:57:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-28 08:57:46,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:46,816 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:46,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 08:57:46,816 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:46,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1362652332, now seen corresponding path program 28 times [2020-10-28 08:57:46,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:46,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501883885] [2020-10-28 08:57:46,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:47,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:47,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:52,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 08:57:52,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 08:57:52,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5333 [2020-10-28 08:57:52,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:52,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 08:57:52,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:57:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 08:57:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:52,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:52,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:52,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:52,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:52,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:52,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:57:52,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:52,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2287 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2020-10-28 08:57:52,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501883885] [2020-10-28 08:57:52,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:52,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 08:57:52,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400798179] [2020-10-28 08:57:52,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 08:57:52,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:52,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 08:57:52,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:57:52,445 INFO L87 Difference]: Start difference. First operand 282 states and 289 transitions. Second operand 15 states. [2020-10-28 08:57:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:52,609 INFO L93 Difference]: Finished difference Result 538 states and 552 transitions. [2020-10-28 08:57:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 08:57:52,609 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 277 [2020-10-28 08:57:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:52,611 INFO L225 Difference]: With dead ends: 538 [2020-10-28 08:57:52,611 INFO L226 Difference]: Without dead ends: 285 [2020-10-28 08:57:52,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 08:57:52,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-28 08:57:52,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2020-10-28 08:57:52,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-10-28 08:57:52,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 291 transitions. [2020-10-28 08:57:52,626 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 291 transitions. Word has length 277 [2020-10-28 08:57:52,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:52,626 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 291 transitions. [2020-10-28 08:57:52,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 08:57:52,626 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 291 transitions. [2020-10-28 08:57:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-28 08:57:52,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:52,628 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:52,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 08:57:52,628 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1940749174, now seen corresponding path program 29 times [2020-10-28 08:57:52,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:52,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145586790] [2020-10-28 08:57:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:52,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:52,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:52,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:53,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:57,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:57,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-28 08:57:57,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:57:57,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5144 [2020-10-28 08:57:57,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:57,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 08:57:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 08:57:57,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 08:57:57,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:57:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:58,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:58,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:57:58,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:57:58,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:57:58,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:57:58,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:57:58,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:57:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:57:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:57:58,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:57:58,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:57:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2310 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 1949 trivial. 0 not checked. [2020-10-28 08:57:58,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145586790] [2020-10-28 08:57:58,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:57:58,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 08:57:58,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301061724] [2020-10-28 08:57:58,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 08:57:58,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:57:58,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 08:57:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:57:58,231 INFO L87 Difference]: Start difference. First operand 284 states and 291 transitions. Second operand 23 states. [2020-10-28 08:57:58,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:57:58,909 INFO L93 Difference]: Finished difference Result 515 states and 533 transitions. [2020-10-28 08:57:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 08:57:58,910 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 279 [2020-10-28 08:57:58,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:57:58,912 INFO L225 Difference]: With dead ends: 515 [2020-10-28 08:57:58,912 INFO L226 Difference]: Without dead ends: 302 [2020-10-28 08:57:58,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:57:58,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-28 08:57:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 296. [2020-10-28 08:57:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2020-10-28 08:57:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 303 transitions. [2020-10-28 08:57:58,927 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 303 transitions. Word has length 279 [2020-10-28 08:57:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:57:58,927 INFO L481 AbstractCegarLoop]: Abstraction has 296 states and 303 transitions. [2020-10-28 08:57:58,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 08:57:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 303 transitions. [2020-10-28 08:57:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-28 08:57:58,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:57:58,930 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:57:58,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 08:57:58,930 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:57:58,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:57:58,931 INFO L82 PathProgramCache]: Analyzing trace with hash -919504642, now seen corresponding path program 30 times [2020-10-28 08:57:58,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:57:58,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244444718] [2020-10-28 08:57:58,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:57:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:57:59,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:59,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:57:59,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:04,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-28 08:58:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:58:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-28 08:58:04,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:04,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 08:58:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 08:58:04,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 08:58:04,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:04,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:04,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:04,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 2144 trivial. 0 not checked. [2020-10-28 08:58:04,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244444718] [2020-10-28 08:58:04,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:04,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 08:58:04,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963564354] [2020-10-28 08:58:04,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 08:58:04,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:04,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 08:58:04,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 08:58:04,507 INFO L87 Difference]: Start difference. First operand 296 states and 303 transitions. Second operand 24 states. [2020-10-28 08:58:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:05,252 INFO L93 Difference]: Finished difference Result 537 states and 555 transitions. [2020-10-28 08:58:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 08:58:05,257 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 291 [2020-10-28 08:58:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:05,259 INFO L225 Difference]: With dead ends: 537 [2020-10-28 08:58:05,259 INFO L226 Difference]: Without dead ends: 314 [2020-10-28 08:58:05,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 08:58:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-28 08:58:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 308. [2020-10-28 08:58:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-28 08:58:05,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 315 transitions. [2020-10-28 08:58:05,271 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 315 transitions. Word has length 291 [2020-10-28 08:58:05,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:05,273 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 315 transitions. [2020-10-28 08:58:05,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 08:58:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 315 transitions. [2020-10-28 08:58:05,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-28 08:58:05,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:05,276 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:05,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 08:58:05,276 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:05,276 INFO L82 PathProgramCache]: Analyzing trace with hash -522571918, now seen corresponding path program 31 times [2020-10-28 08:58:05,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:05,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157606039] [2020-10-28 08:58:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:05,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:10,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:10,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 313 [2020-10-28 08:58:10,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:58:10,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5388 [2020-10-28 08:58:10,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:10,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:58:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:10,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:58:10,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:10,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:10,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:10,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:10,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:10,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:58:10,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:10,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:10,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:10,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:10,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 2646 trivial. 0 not checked. [2020-10-28 08:58:10,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157606039] [2020-10-28 08:58:10,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:10,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:58:10,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421815927] [2020-10-28 08:58:10,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:58:10,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:10,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:58:10,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:58:10,938 INFO L87 Difference]: Start difference. First operand 308 states and 315 transitions. Second operand 16 states. [2020-10-28 08:58:11,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:11,094 INFO L93 Difference]: Finished difference Result 588 states and 602 transitions. [2020-10-28 08:58:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:58:11,094 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 303 [2020-10-28 08:58:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:11,096 INFO L225 Difference]: With dead ends: 588 [2020-10-28 08:58:11,096 INFO L226 Difference]: Without dead ends: 311 [2020-10-28 08:58:11,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:58:11,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-28 08:58:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 310. [2020-10-28 08:58:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-10-28 08:58:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 317 transitions. [2020-10-28 08:58:11,107 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 317 transitions. Word has length 303 [2020-10-28 08:58:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:11,107 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 317 transitions. [2020-10-28 08:58:11,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:58:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 317 transitions. [2020-10-28 08:58:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-28 08:58:11,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:11,110 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:11,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 08:58:11,112 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:11,112 INFO L82 PathProgramCache]: Analyzing trace with hash 205655504, now seen corresponding path program 32 times [2020-10-28 08:58:11,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:11,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366389068] [2020-10-28 08:58:11,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:11,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:11,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:11,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:11,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5360 [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 08:58:16,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:16,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:16,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:16,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:16,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:58:16,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:16,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:16,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:16,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2815 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 2374 trivial. 0 not checked. [2020-10-28 08:58:16,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366389068] [2020-10-28 08:58:16,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:16,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 08:58:16,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251770005] [2020-10-28 08:58:16,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 08:58:16,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:16,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 08:58:16,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:58:16,981 INFO L87 Difference]: Start difference. First operand 310 states and 317 transitions. Second operand 25 states. [2020-10-28 08:58:17,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:17,753 INFO L93 Difference]: Finished difference Result 561 states and 579 transitions. [2020-10-28 08:58:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 08:58:17,754 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 305 [2020-10-28 08:58:17,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:17,758 INFO L225 Difference]: With dead ends: 561 [2020-10-28 08:58:17,758 INFO L226 Difference]: Without dead ends: 328 [2020-10-28 08:58:17,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 08:58:17,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-28 08:58:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 322. [2020-10-28 08:58:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2020-10-28 08:58:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 329 transitions. [2020-10-28 08:58:17,769 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 329 transitions. Word has length 305 [2020-10-28 08:58:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:17,770 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 329 transitions. [2020-10-28 08:58:17,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 08:58:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 329 transitions. [2020-10-28 08:58:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 08:58:17,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:17,772 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:17,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 08:58:17,773 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:17,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1199892804, now seen corresponding path program 33 times [2020-10-28 08:58:17,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:17,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722508139] [2020-10-28 08:58:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:18,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:23,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:23,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-28 08:58:23,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:58:23,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5469 [2020-10-28 08:58:23,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:23,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 08:58:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-28 08:58:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 08:58:23,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:23,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:23,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:23,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:23,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:23,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:58:23,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:23,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:23,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:23,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3073 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2589 trivial. 0 not checked. [2020-10-28 08:58:23,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722508139] [2020-10-28 08:58:23,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:23,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 08:58:23,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117332862] [2020-10-28 08:58:23,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 08:58:23,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:23,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 08:58:23,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 08:58:23,809 INFO L87 Difference]: Start difference. First operand 322 states and 329 transitions. Second operand 26 states. [2020-10-28 08:58:24,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:24,655 INFO L93 Difference]: Finished difference Result 583 states and 601 transitions. [2020-10-28 08:58:24,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 08:58:24,656 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 317 [2020-10-28 08:58:24,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:24,659 INFO L225 Difference]: With dead ends: 583 [2020-10-28 08:58:24,659 INFO L226 Difference]: Without dead ends: 340 [2020-10-28 08:58:24,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 08:58:24,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-28 08:58:24,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 334. [2020-10-28 08:58:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-28 08:58:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 341 transitions. [2020-10-28 08:58:24,669 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 341 transitions. Word has length 317 [2020-10-28 08:58:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:24,670 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 341 transitions. [2020-10-28 08:58:24,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 08:58:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 341 transitions. [2020-10-28 08:58:24,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-10-28 08:58:24,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:24,672 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:24,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 08:58:24,673 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:24,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1563887288, now seen corresponding path program 34 times [2020-10-28 08:58:24,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:24,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094266968] [2020-10-28 08:58:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:25,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:30,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:30,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 08:58:30,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:58:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5870 [2020-10-28 08:58:30,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:30,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 08:58:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 08:58:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:30,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:30,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:30,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:30,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:30,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:58:30,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:30,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:30,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:30,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3343 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 3174 trivial. 0 not checked. [2020-10-28 08:58:30,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094266968] [2020-10-28 08:58:30,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:30,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 08:58:30,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329103282] [2020-10-28 08:58:30,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 08:58:30,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:30,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 08:58:30,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:58:30,905 INFO L87 Difference]: Start difference. First operand 334 states and 341 transitions. Second operand 17 states. [2020-10-28 08:58:31,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:31,056 INFO L93 Difference]: Finished difference Result 638 states and 652 transitions. [2020-10-28 08:58:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:58:31,057 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 329 [2020-10-28 08:58:31,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:31,059 INFO L225 Difference]: With dead ends: 638 [2020-10-28 08:58:31,059 INFO L226 Difference]: Without dead ends: 337 [2020-10-28 08:58:31,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 08:58:31,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-28 08:58:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 336. [2020-10-28 08:58:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2020-10-28 08:58:31,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 343 transitions. [2020-10-28 08:58:31,069 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 343 transitions. Word has length 329 [2020-10-28 08:58:31,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:31,069 INFO L481 AbstractCegarLoop]: Abstraction has 336 states and 343 transitions. [2020-10-28 08:58:31,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 08:58:31,069 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 343 transitions. [2020-10-28 08:58:31,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-28 08:58:31,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:31,071 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:31,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 08:58:31,072 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:31,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:31,072 INFO L82 PathProgramCache]: Analyzing trace with hash -567702634, now seen corresponding path program 35 times [2020-10-28 08:58:31,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:31,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391105729] [2020-10-28 08:58:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:31,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:31,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:36,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:36,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-28 08:58:36,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 08:58:36,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5350 [2020-10-28 08:58:36,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:36,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:36,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 08:58:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 08:58:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 08:58:36,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0