/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:54:57,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:54:57,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:54:57,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:54:57,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:54:57,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:54:57,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:54:57,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:54:57,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:54:57,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:54:57,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:54:57,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:54:57,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:54:57,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:54:57,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:54:57,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:54:57,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:54:57,993 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:54:57,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:54:58,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:54:58,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:54:58,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:54:58,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:54:58,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:54:58,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:54:58,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:54:58,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:54:58,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:54:58,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:54:58,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:54:58,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:54:58,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:54:58,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:54:58,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:54:58,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:54:58,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:54:58,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:54:58,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:54:58,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:54:58,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:54:58,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:54:58,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:54:58,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:54:58,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:54:58,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:54:58,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:54:58,147 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:54:58,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:54:58,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:54:58,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:54:58,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:54:58,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:54:58,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:54:58,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:54:58,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:54:58,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:54:58,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:54:58,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:54:58,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:54:58,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:54:58,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:54:58,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:54:58,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:54:58,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:54:58,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:54:58,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:54:58,154 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:54:58,154 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:54:58,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:54:58,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:54:58,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:54:58,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:54:58,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:54:58,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:54:58,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:54:58,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:54:58,627 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:54:58,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label35.c [2020-10-28 13:54:58,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78b6e9be6/8a7aec29b8d04a4b87a452888633fe59/FLAG5749b9869 [2020-10-28 13:54:59,812 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:54:59,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label35.c [2020-10-28 13:54:59,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78b6e9be6/8a7aec29b8d04a4b87a452888633fe59/FLAG5749b9869 [2020-10-28 13:55:00,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78b6e9be6/8a7aec29b8d04a4b87a452888633fe59 [2020-10-28 13:55:00,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:55:00,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:55:00,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:55:00,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:55:00,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:55:00,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:55:00" (1/1) ... [2020-10-28 13:55:00,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87a6fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:00, skipping insertion in model container [2020-10-28 13:55:00,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:55:00" (1/1) ... [2020-10-28 13:55:00,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:55:00,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:55:01,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:55:01,697 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:55:02,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:55:02,256 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:55:02,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02 WrapperNode [2020-10-28 13:55:02,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:55:02,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:55:02,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:55:02,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:55:02,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02" (1/1) ... [2020-10-28 13:55:02,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02" (1/1) ... [2020-10-28 13:55:02,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02" (1/1) ... [2020-10-28 13:55:02,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02" (1/1) ... [2020-10-28 13:55:02,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02" (1/1) ... [2020-10-28 13:55:02,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02" (1/1) ... [2020-10-28 13:55:02,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02" (1/1) ... [2020-10-28 13:55:02,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:55:02,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:55:02,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:55:02,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:55:02,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:55:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:55:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:55:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:55:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:55:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:55:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:55:02,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:55:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:55:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:55:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:55:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:55:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:55:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:55:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:55:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:55:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:55:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:55:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:55:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:55:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:55:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:55:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:55:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:55:06,707 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:55:06,707 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:55:06,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:55:06 BoogieIcfgContainer [2020-10-28 13:55:06,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:55:06,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:55:06,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:55:06,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:55:06,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:55:00" (1/3) ... [2020-10-28 13:55:06,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b8ca1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:55:06, skipping insertion in model container [2020-10-28 13:55:06,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:55:02" (2/3) ... [2020-10-28 13:55:06,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b8ca1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:55:06, skipping insertion in model container [2020-10-28 13:55:06,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:55:06" (3/3) ... [2020-10-28 13:55:06,720 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label35.c [2020-10-28 13:55:06,733 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:55:06,739 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:55:06,754 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:55:06,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:55:06,788 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:55:06,788 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:55:06,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:55:06,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:55:06,788 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:55:06,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:55:06,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:55:06,823 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:55:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 13:55:06,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:06,831 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] [2020-10-28 13:55:06,831 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:06,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:06,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1510701488, now seen corresponding path program 1 times [2020-10-28 13:55:06,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:06,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956737408] [2020-10-28 13:55:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:07,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:07,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:07,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 13:55:07,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:07,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 496 [2020-10-28 13:55:07,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:07,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:55:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:55:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 13:55:07,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:55:07,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:07,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:07,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:07,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:07,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:07,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:55:07,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:07,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:07,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:55:07,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:55:07,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956737408] [2020-10-28 13:55:07,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:55:07,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:55:07,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239347750] [2020-10-28 13:55:07,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:55:07,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:07,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:55:07,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:55:07,791 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-28 13:55:16,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:16,979 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-28 13:55:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:55:16,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-28 13:55:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:17,013 INFO L225 Difference]: With dead ends: 2275 [2020-10-28 13:55:17,013 INFO L226 Difference]: Without dead ends: 1433 [2020-10-28 13:55:17,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:55:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-28 13:55:17,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-28 13:55:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-28 13:55:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2230 transitions. [2020-10-28 13:55:17,202 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2230 transitions. Word has length 21 [2020-10-28 13:55:17,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:17,202 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2230 transitions. [2020-10-28 13:55:17,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:55:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2230 transitions. [2020-10-28 13:55:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 13:55:17,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:17,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:55:17,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:55:17,208 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:17,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:17,209 INFO L82 PathProgramCache]: Analyzing trace with hash -741319159, now seen corresponding path program 1 times [2020-10-28 13:55:17,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:17,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37513167] [2020-10-28 13:55:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:17,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:18,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:18,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 13:55:18,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:55:18,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-28 13:55:18,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:18,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:55:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:55:18,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:55:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:55:18,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:18,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:18,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:18,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:55:18,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:18,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:55:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:18,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:18,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:18,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:55:18,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 13:55:18,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:18,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:18,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:55:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:55:18,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37513167] [2020-10-28 13:55:18,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:55:18,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:55:18,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912861783] [2020-10-28 13:55:18,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:18,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:18,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:18,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:18,463 INFO L87 Difference]: Start difference. First operand 1426 states and 2230 transitions. Second operand 7 states. [2020-10-28 13:55:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:29,708 INFO L93 Difference]: Finished difference Result 4354 states and 6840 transitions. [2020-10-28 13:55:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:55:29,709 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-28 13:55:29,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:29,726 INFO L225 Difference]: With dead ends: 4354 [2020-10-28 13:55:29,726 INFO L226 Difference]: Without dead ends: 2934 [2020-10-28 13:55:29,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:55:29,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2020-10-28 13:55:29,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2879. [2020-10-28 13:55:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2879 states. [2020-10-28 13:55:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3877 transitions. [2020-10-28 13:55:29,828 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3877 transitions. Word has length 91 [2020-10-28 13:55:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:29,829 INFO L481 AbstractCegarLoop]: Abstraction has 2879 states and 3877 transitions. [2020-10-28 13:55:29,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:55:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3877 transitions. [2020-10-28 13:55:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 13:55:29,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:29,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:55:29,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:55:29,834 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:29,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:29,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1467700431, now seen corresponding path program 1 times [2020-10-28 13:55:29,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:29,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237220662] [2020-10-28 13:55:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:30,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:30,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:30,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:55:30,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:55:30,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-10-28 13:55:30,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:30,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:55:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:55:30,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:55:30,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:30,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:30,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:30,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:30,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:30,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:55:30,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:30,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:30,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:55:30,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:55:30,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:30,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:30,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:31,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:31,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:55:31,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:31,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:55:31,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:31,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:31,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:55:31,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:55:31,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237220662] [2020-10-28 13:55:31,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:55:31,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:55:31,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404826596] [2020-10-28 13:55:31,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:31,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:31,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:31,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:31,192 INFO L87 Difference]: Start difference. First operand 2879 states and 3877 transitions. Second operand 7 states. [2020-10-28 13:55:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:43,196 INFO L93 Difference]: Finished difference Result 8802 states and 12016 transitions. [2020-10-28 13:55:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:55:43,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-28 13:55:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:43,234 INFO L225 Difference]: With dead ends: 8802 [2020-10-28 13:55:43,234 INFO L226 Difference]: Without dead ends: 5929 [2020-10-28 13:55:43,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:55:43,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5929 states. [2020-10-28 13:55:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5929 to 5842. [2020-10-28 13:55:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5842 states. [2020-10-28 13:55:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 7282 transitions. [2020-10-28 13:55:43,452 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 7282 transitions. Word has length 111 [2020-10-28 13:55:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:43,454 INFO L481 AbstractCegarLoop]: Abstraction has 5842 states and 7282 transitions. [2020-10-28 13:55:43,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:55:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 7282 transitions. [2020-10-28 13:55:43,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-28 13:55:43,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:43,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:55:43,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:55:43,468 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:43,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:43,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1857973832, now seen corresponding path program 1 times [2020-10-28 13:55:43,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:43,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988863002] [2020-10-28 13:55:43,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:43,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:44,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:46,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:46,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-28 13:55:46,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:55:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3130 [2020-10-28 13:55:46,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:46,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:55:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:55:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:55:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:46,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:46,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:46,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:46,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:55:46,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:46,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:46,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:55:46,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:46,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:47,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:47,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:55:47,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:47,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 13:55:47,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:47,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:47,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:55:47,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:55:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 13:55:47,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:47,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:47,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:55:47,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:47,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:55:47,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:47,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:55:47,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:47,428 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:55:47,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988863002] [2020-10-28 13:55:47,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:55:47,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:55:47,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124593168] [2020-10-28 13:55:47,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:47,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:47,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:47,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:47,431 INFO L87 Difference]: Start difference. First operand 5842 states and 7282 transitions. Second operand 7 states. [2020-10-28 13:55:56,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:56,957 INFO L93 Difference]: Finished difference Result 12600 states and 15574 transitions. [2020-10-28 13:55:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:55:56,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-10-28 13:55:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:56,999 INFO L225 Difference]: With dead ends: 12600 [2020-10-28 13:55:56,999 INFO L226 Difference]: Without dead ends: 6764 [2020-10-28 13:55:57,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:55:57,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2020-10-28 13:55:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6623. [2020-10-28 13:55:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6623 states. [2020-10-28 13:55:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 8088 transitions. [2020-10-28 13:55:57,187 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 8088 transitions. Word has length 216 [2020-10-28 13:55:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:57,188 INFO L481 AbstractCegarLoop]: Abstraction has 6623 states and 8088 transitions. [2020-10-28 13:55:57,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:55:57,189 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 8088 transitions. [2020-10-28 13:55:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-28 13:55:57,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:57,198 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:55:57,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:55:57,199 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:57,199 INFO L82 PathProgramCache]: Analyzing trace with hash -602391433, now seen corresponding path program 1 times [2020-10-28 13:55:57,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:57,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278020540] [2020-10-28 13:55:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:57,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:58,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:01,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:01,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-28 13:56:01,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:56:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3805 [2020-10-28 13:56:01,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:01,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:56:01,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:56:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:01,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:01,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:01,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:01,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:01,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:56:01,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:01,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:01,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:01,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:01,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:01,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:01,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:01,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:56:01,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:01,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:56:01,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:01,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:01,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:01,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:56:01,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:56:01,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:56:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:01,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:01,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:01,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:56:01,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:01,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 13:56:01,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:01,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:56:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:02,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 13:56:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:02,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:02,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:02,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:56:02,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:02,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:56:02,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:02,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:56:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 162 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 13:56:02,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278020540] [2020-10-28 13:56:02,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:02,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:56:02,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713181079] [2020-10-28 13:56:02,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:56:02,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:02,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:56:02,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:56:02,394 INFO L87 Difference]: Start difference. First operand 6623 states and 8088 transitions. Second operand 8 states. [2020-10-28 13:56:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:21,230 INFO L93 Difference]: Finished difference Result 21301 states and 27088 transitions. [2020-10-28 13:56:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 13:56:21,231 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 402 [2020-10-28 13:56:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:21,286 INFO L225 Difference]: With dead ends: 21301 [2020-10-28 13:56:21,286 INFO L226 Difference]: Without dead ends: 13116 [2020-10-28 13:56:21,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-28 13:56:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13116 states. [2020-10-28 13:56:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13116 to 10197. [2020-10-28 13:56:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10197 states. [2020-10-28 13:56:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10197 states to 10197 states and 11244 transitions. [2020-10-28 13:56:21,590 INFO L78 Accepts]: Start accepts. Automaton has 10197 states and 11244 transitions. Word has length 402 [2020-10-28 13:56:21,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:21,590 INFO L481 AbstractCegarLoop]: Abstraction has 10197 states and 11244 transitions. [2020-10-28 13:56:21,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:56:21,590 INFO L276 IsEmpty]: Start isEmpty. Operand 10197 states and 11244 transitions. [2020-10-28 13:56:21,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-28 13:56:21,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:21,600 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:56:21,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:56:21,600 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:21,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1020913088, now seen corresponding path program 1 times [2020-10-28 13:56:21,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:21,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468072976] [2020-10-28 13:56:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:21,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:22,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:26,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:26,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-28 13:56:26,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:56:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-28 13:56:26,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:26,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:56:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:56:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:26,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:26,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:26,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:26,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:56:26,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:26,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:26,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:26,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:27,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:27,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:56:27,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-28 13:56:27,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:27,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:27,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:56:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:27,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:56:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:27,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:27,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:27,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:56:27,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:56:27,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:27,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:56:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:27,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:56:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:27,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:27,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:56:27,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-28 13:56:27,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:27,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:56:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:56:27,991 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:56:27,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468072976] [2020-10-28 13:56:27,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:27,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:56:27,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102463758] [2020-10-28 13:56:27,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:27,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:27,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:27,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:27,995 INFO L87 Difference]: Start difference. First operand 10197 states and 11244 transitions. Second operand 7 states. [2020-10-28 13:56:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:37,859 INFO L93 Difference]: Finished difference Result 22706 states and 25684 transitions. [2020-10-28 13:56:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:56:37,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-28 13:56:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:37,899 INFO L225 Difference]: With dead ends: 22706 [2020-10-28 13:56:37,900 INFO L226 Difference]: Without dead ends: 13225 [2020-10-28 13:56:37,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:56:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13225 states. [2020-10-28 13:56:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13225 to 13148. [2020-10-28 13:56:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13148 states. [2020-10-28 13:56:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13148 states to 13148 states and 14691 transitions. [2020-10-28 13:56:38,197 INFO L78 Accepts]: Start accepts. Automaton has 13148 states and 14691 transitions. Word has length 418 [2020-10-28 13:56:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:38,199 INFO L481 AbstractCegarLoop]: Abstraction has 13148 states and 14691 transitions. [2020-10-28 13:56:38,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 13148 states and 14691 transitions. [2020-10-28 13:56:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-28 13:56:38,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:38,214 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:56:38,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:56:38,214 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:38,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:38,215 INFO L82 PathProgramCache]: Analyzing trace with hash 232422997, now seen corresponding path program 1 times [2020-10-28 13:56:38,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:38,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730167882] [2020-10-28 13:56:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:38,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:38,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:43,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:43,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 519 [2020-10-28 13:56:43,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:56:43,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:56:43,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:43,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:56:43,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:56:43,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:43,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:43,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:43,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:43,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:43,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:43,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:56:43,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:43,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:43,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:43,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:43,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:43,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:43,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:56:43,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:43,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:56:43,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:43,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:43,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:43,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:43,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:43,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:56:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:43,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:43,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:56:43,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:43,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:56:43,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:43,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:43,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:43,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:43,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:56:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:43,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:43,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:56:43,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:43,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:56:43,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:43,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:43,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:43,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:56:43,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:43,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:56:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:43,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:44,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:44,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:56:44,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:44,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:56:44,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:44,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:44,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:44,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:44,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:56:44,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 13:56:44,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730167882] [2020-10-28 13:56:44,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:44,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:56:44,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641159225] [2020-10-28 13:56:44,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:44,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:44,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:44,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:44,335 INFO L87 Difference]: Start difference. First operand 13148 states and 14691 transitions. Second operand 7 states. [2020-10-28 13:56:56,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:56,835 INFO L93 Difference]: Finished difference Result 28557 states and 32617 transitions. [2020-10-28 13:56:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:56:56,840 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 501 [2020-10-28 13:56:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:56,886 INFO L225 Difference]: With dead ends: 28557 [2020-10-28 13:56:56,887 INFO L226 Difference]: Without dead ends: 16125 [2020-10-28 13:56:56,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:56:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16125 states. [2020-10-28 13:56:57,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16125 to 16075. [2020-10-28 13:56:57,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16075 states. [2020-10-28 13:56:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16075 states to 16075 states and 17969 transitions. [2020-10-28 13:56:57,242 INFO L78 Accepts]: Start accepts. Automaton has 16075 states and 17969 transitions. Word has length 501 [2020-10-28 13:56:57,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:57,244 INFO L481 AbstractCegarLoop]: Abstraction has 16075 states and 17969 transitions. [2020-10-28 13:56:57,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:57,244 INFO L276 IsEmpty]: Start isEmpty. Operand 16075 states and 17969 transitions. [2020-10-28 13:56:57,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-10-28 13:56:57,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:57,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:56:57,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:56:57,259 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:57,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:57,260 INFO L82 PathProgramCache]: Analyzing trace with hash 191201137, now seen corresponding path program 1 times [2020-10-28 13:56:57,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:57,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499756565] [2020-10-28 13:56:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:57,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:57,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:02,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:02,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-28 13:57:02,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:57:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:57:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:02,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:57:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:57:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:02,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:02,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:02,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:02,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:02,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:02,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:57:02,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:02,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:02,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:02,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:02,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:57:02,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:02,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:57:02,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:02,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:02,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:02,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:02,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:02,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:57:02,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:02,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:57:02,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:02,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:02,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:02,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:57:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:02,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:02,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:02,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:57:02,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:02,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:57:02,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:02,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:02,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:57:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:02,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:57:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:02,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:03,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:57:03,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:57:03,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:03,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:57:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 13:57:03,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499756565] [2020-10-28 13:57:03,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:03,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:03,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133010117] [2020-10-28 13:57:03,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:03,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:03,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:03,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:03,366 INFO L87 Difference]: Start difference. First operand 16075 states and 17969 transitions. Second operand 7 states. [2020-10-28 13:57:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:15,514 INFO L93 Difference]: Finished difference Result 35979 states and 41131 transitions. [2020-10-28 13:57:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:57:15,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 515 [2020-10-28 13:57:15,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:15,572 INFO L225 Difference]: With dead ends: 35979 [2020-10-28 13:57:15,573 INFO L226 Difference]: Without dead ends: 20620 [2020-10-28 13:57:15,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:57:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20620 states. [2020-10-28 13:57:15,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20620 to 20445. [2020-10-28 13:57:15,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20445 states. [2020-10-28 13:57:15,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20445 states to 20445 states and 22811 transitions. [2020-10-28 13:57:15,974 INFO L78 Accepts]: Start accepts. Automaton has 20445 states and 22811 transitions. Word has length 515 [2020-10-28 13:57:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:15,975 INFO L481 AbstractCegarLoop]: Abstraction has 20445 states and 22811 transitions. [2020-10-28 13:57:15,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:57:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 20445 states and 22811 transitions. [2020-10-28 13:57:15,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-28 13:57:15,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:15,989 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:57:15,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:57:15,989 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:15,990 INFO L82 PathProgramCache]: Analyzing trace with hash 45007229, now seen corresponding path program 1 times [2020-10-28 13:57:15,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:15,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637937511] [2020-10-28 13:57:15,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:16,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:16,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:21,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:21,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 540 [2020-10-28 13:57:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:57:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-28 13:57:21,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:21,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:57:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:57:21,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:21,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:21,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:21,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:21,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:21,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:57:21,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:21,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:21,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:21,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:57:21,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:21,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:21,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:21,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:57:21,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:57:21,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:21,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:21,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:57:21,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:21,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:57:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:21,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:57:21,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:21,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:57:21,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:21,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:21,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:21,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:21,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:57:21,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:21,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:57:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:21,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:21,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:21,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:57:21,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:21,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:57:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:21,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 13:57:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 116 proven. 75 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 13:57:22,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637937511] [2020-10-28 13:57:22,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:22,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:22,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323893034] [2020-10-28 13:57:22,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:22,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:22,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:22,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:22,180 INFO L87 Difference]: Start difference. First operand 20445 states and 22811 transitions. Second operand 7 states. [2020-10-28 13:57:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:32,551 INFO L93 Difference]: Finished difference Result 52597 states and 60229 transitions. [2020-10-28 13:57:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:57:32,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 522 [2020-10-28 13:57:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:32,654 INFO L225 Difference]: With dead ends: 52597 [2020-10-28 13:57:32,654 INFO L226 Difference]: Without dead ends: 32868 [2020-10-28 13:57:32,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:57:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32868 states. [2020-10-28 13:57:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32868 to 32781. [2020-10-28 13:57:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32781 states. [2020-10-28 13:57:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32781 states to 32781 states and 37455 transitions. [2020-10-28 13:57:33,321 INFO L78 Accepts]: Start accepts. Automaton has 32781 states and 37455 transitions. Word has length 522 [2020-10-28 13:57:33,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:33,322 INFO L481 AbstractCegarLoop]: Abstraction has 32781 states and 37455 transitions. [2020-10-28 13:57:33,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:57:33,323 INFO L276 IsEmpty]: Start isEmpty. Operand 32781 states and 37455 transitions. [2020-10-28 13:57:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-28 13:57:33,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:33,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:57:33,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:57:33,342 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:33,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:33,342 INFO L82 PathProgramCache]: Analyzing trace with hash -169870227, now seen corresponding path program 1 times [2020-10-28 13:57:33,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:33,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169369901] [2020-10-28 13:57:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:33,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:33,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:34,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:38,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:38,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-28 13:57:38,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:57:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 13:57:38,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:38,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:57:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:57:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:38,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:57:38,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:38,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:38,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:38,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:38,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:38,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:57:38,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:57:38,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:38,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:57:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:38,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:38,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:38,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:38,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:57:38,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:38,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:57:38,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:38,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:38,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:38,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:38,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:57:38,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:57:39,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:57:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:39,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:39,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:57:39,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:39,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-28 13:57:39,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:39,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:57:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:39,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-28 13:57:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:39,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:39,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:39,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:57:39,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:57:39,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:39,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 13:57:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:39,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 162 proven. 95 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-28 13:57:39,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169369901] [2020-10-28 13:57:39,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:39,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:39,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779276965] [2020-10-28 13:57:39,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:39,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:39,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:39,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:39,741 INFO L87 Difference]: Start difference. First operand 32781 states and 37455 transitions. Second operand 7 states. [2020-10-28 13:57:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:57:51,019 INFO L93 Difference]: Finished difference Result 70259 states and 83047 transitions. [2020-10-28 13:57:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:57:51,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 546 [2020-10-28 13:57:51,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:57:51,143 INFO L225 Difference]: With dead ends: 70259 [2020-10-28 13:57:51,143 INFO L226 Difference]: Without dead ends: 38194 [2020-10-28 13:57:51,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:57:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38194 states. [2020-10-28 13:57:51,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38194 to 36370. [2020-10-28 13:57:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36370 states. [2020-10-28 13:57:52,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36370 states to 36370 states and 41283 transitions. [2020-10-28 13:57:52,012 INFO L78 Accepts]: Start accepts. Automaton has 36370 states and 41283 transitions. Word has length 546 [2020-10-28 13:57:52,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:57:52,013 INFO L481 AbstractCegarLoop]: Abstraction has 36370 states and 41283 transitions. [2020-10-28 13:57:52,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:57:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 36370 states and 41283 transitions. [2020-10-28 13:57:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2020-10-28 13:57:52,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:57:52,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:57:52,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:57:52,022 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:57:52,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:57:52,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1631509170, now seen corresponding path program 1 times [2020-10-28 13:57:52,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:57:52,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [649372948] [2020-10-28 13:57:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:57:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:52,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:52,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:57,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:57,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-28 13:57:57,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:57:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-28 13:57:57,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:57,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-10-28 13:57:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:57:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:57:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:57,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:57,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:57,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:57:57,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:57:57,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:57,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:57,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:57:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:57,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:57,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:57,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:57:57,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:57,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-28 13:57:57,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:57,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:57,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:57,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:57,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-28 13:57:57,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:57:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:57,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:57,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:57:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:57:57,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:57,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:57:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:57:57,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:57:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 13:57:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:57,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:57,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:57,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:57:57,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:57:57,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:57,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:57:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:57:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:57:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:58,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-28 13:57:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:57:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:57:58,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:57:58,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:57:58,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:57:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:57:58,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:57:58,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:57:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:57:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 13:57:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:57:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:57:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 162 proven. 95 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-28 13:57:58,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [649372948] [2020-10-28 13:57:58,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:57:58,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:57:58,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411045080] [2020-10-28 13:57:58,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:57:58,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:57:58,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:57:58,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:57:58,619 INFO L87 Difference]: Start difference. First operand 36370 states and 41283 transitions. Second operand 7 states. [2020-10-28 13:58:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:09,529 INFO L93 Difference]: Finished difference Result 74231 states and 84445 transitions. [2020-10-28 13:58:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:58:09,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 553 [2020-10-28 13:58:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:09,632 INFO L225 Difference]: With dead ends: 74231 [2020-10-28 13:58:09,632 INFO L226 Difference]: Without dead ends: 38577 [2020-10-28 13:58:09,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:58:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38577 states. [2020-10-28 13:58:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38577 to 38486. [2020-10-28 13:58:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38486 states. [2020-10-28 13:58:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38486 states to 38486 states and 43574 transitions. [2020-10-28 13:58:10,606 INFO L78 Accepts]: Start accepts. Automaton has 38486 states and 43574 transitions. Word has length 553 [2020-10-28 13:58:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:10,607 INFO L481 AbstractCegarLoop]: Abstraction has 38486 states and 43574 transitions. [2020-10-28 13:58:10,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:10,607 INFO L276 IsEmpty]: Start isEmpty. Operand 38486 states and 43574 transitions. [2020-10-28 13:58:10,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2020-10-28 13:58:10,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:10,625 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:58:10,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:58:10,625 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:10,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:10,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1155885698, now seen corresponding path program 1 times [2020-10-28 13:58:10,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:10,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747042778] [2020-10-28 13:58:10,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:10,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:13,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1119 [2020-10-28 13:58:13,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:58:13,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2335 [2020-10-28 13:58:13,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:13,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-28 13:58:13,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:58:13,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:13,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:58:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:13,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:13,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:58:13,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:13,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:58:13,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:13,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:13,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:13,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:13,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:13,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:13,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:58:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:13,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:58:13,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:13,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:58:13,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:13,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:13,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:13,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:13,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:58:13,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:13,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:58:13,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:13,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:13,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:13,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:13,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:13,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:13,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:58:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:13,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:13,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:13,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:58:13,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:58:13,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:13,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:13,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:13,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:58:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:14,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:14,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:14,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:58:14,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:14,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:58:14,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:14,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:14,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:14,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:58:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:14,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:14,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:58:14,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:58:14,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:14,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:58:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:14,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:58:14,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:14,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:58:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:14,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:14,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:58:14,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:58:14,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:14,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:58:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:58:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:58:14,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:14,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 13:58:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:14,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:14,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:58:14,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:58:14,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:58:14,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:58:14,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:58:14,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:58:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:58:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:58:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:58:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:58:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 936 backedges. 344 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-28 13:58:15,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747042778] [2020-10-28 13:58:15,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:58:15,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:58:15,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895318285] [2020-10-28 13:58:15,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:58:15,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:58:15,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:58:15,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:58:15,443 INFO L87 Difference]: Start difference. First operand 38486 states and 43574 transitions. Second operand 7 states. [2020-10-28 13:58:33,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:58:33,318 INFO L93 Difference]: Finished difference Result 83456 states and 95940 transitions. [2020-10-28 13:58:33,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:58:33,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1095 [2020-10-28 13:58:33,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:58:33,439 INFO L225 Difference]: With dead ends: 83456 [2020-10-28 13:58:33,439 INFO L226 Difference]: Without dead ends: 45686 [2020-10-28 13:58:33,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:58:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45686 states. [2020-10-28 13:58:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45686 to 44916. [2020-10-28 13:58:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44916 states. [2020-10-28 13:58:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44916 states to 44916 states and 50709 transitions. [2020-10-28 13:58:34,301 INFO L78 Accepts]: Start accepts. Automaton has 44916 states and 50709 transitions. Word has length 1095 [2020-10-28 13:58:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:58:34,303 INFO L481 AbstractCegarLoop]: Abstraction has 44916 states and 50709 transitions. [2020-10-28 13:58:34,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:58:34,303 INFO L276 IsEmpty]: Start isEmpty. Operand 44916 states and 50709 transitions. [2020-10-28 13:58:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2020-10-28 13:58:34,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:58:34,330 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:58:34,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:58:34,331 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:58:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:58:34,331 INFO L82 PathProgramCache]: Analyzing trace with hash 898244891, now seen corresponding path program 1 times [2020-10-28 13:58:34,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:58:34,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133156307] [2020-10-28 13:58:34,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:58:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:58:34,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:58:35,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking...