/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:39:56,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:39:56,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:39:56,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:39:56,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:39:56,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:39:56,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:39:56,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:39:56,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:39:56,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:39:56,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:39:56,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:39:56,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:39:56,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:39:56,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:39:56,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:39:56,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:39:56,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:39:56,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:39:56,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:39:56,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:39:56,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:39:56,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:39:56,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:39:56,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:39:56,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:39:56,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:39:56,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:39:56,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:39:56,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:39:56,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:39:56,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:39:56,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:39:56,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:39:56,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:39:56,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:39:56,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:39:56,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:39:56,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:39:56,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:39:56,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:39:56,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:39:56,260 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:39:56,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:39:56,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:39:56,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:39:56,263 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:39:56,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:39:56,263 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:39:56,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:39:56,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:39:56,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:39:56,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:39:56,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:39:56,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:39:56,266 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:39:56,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:39:56,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:39:56,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:39:56,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:39:56,267 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:39:56,267 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:39:56,267 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:39:56,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:39:56,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:39:56,268 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:39:56,268 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:39:56,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:39:56,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:39:56,269 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:39:56,269 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:39:56,269 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:39:56,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:39:56,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:39:56,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:39:56,745 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:39:56,746 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:39:56,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label03.c [2020-10-29 07:39:56,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16349909f/3ab1c90a84a9429eb779f85fc8642729/FLAG131dc9c7b [2020-10-29 07:39:57,666 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:39:57,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label03.c [2020-10-29 07:39:57,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16349909f/3ab1c90a84a9429eb779f85fc8642729/FLAG131dc9c7b [2020-10-29 07:39:57,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16349909f/3ab1c90a84a9429eb779f85fc8642729 [2020-10-29 07:39:57,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:39:57,819 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:39:57,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:39:57,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:39:57,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:39:57,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:39:57" (1/1) ... [2020-10-29 07:39:57,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a7665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:57, skipping insertion in model container [2020-10-29 07:39:57,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:39:57" (1/1) ... [2020-10-29 07:39:57,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:39:57,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:39:58,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:39:58,802 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:39:59,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:39:59,125 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:39:59,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59 WrapperNode [2020-10-29 07:39:59,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:39:59,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:39:59,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:39:59,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:39:59,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59" (1/1) ... [2020-10-29 07:39:59,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59" (1/1) ... [2020-10-29 07:39:59,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59" (1/1) ... [2020-10-29 07:39:59,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59" (1/1) ... [2020-10-29 07:39:59,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59" (1/1) ... [2020-10-29 07:39:59,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59" (1/1) ... [2020-10-29 07:39:59,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59" (1/1) ... [2020-10-29 07:39:59,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:39:59,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:39:59,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:39:59,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:39:59,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:39:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:39:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:39:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:39:59,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:39:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:39:59,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:39:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:39:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:39:59,485 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:39:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:39:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:39:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:39:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:39:59,486 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:39:59,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:39:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:39:59,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:40:02,794 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:40:02,795 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:40:02,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:40:02 BoogieIcfgContainer [2020-10-29 07:40:02,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:40:02,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:40:02,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:40:02,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:40:02,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:39:57" (1/3) ... [2020-10-29 07:40:02,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e853ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:40:02, skipping insertion in model container [2020-10-29 07:40:02,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:39:59" (2/3) ... [2020-10-29 07:40:02,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e853ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:40:02, skipping insertion in model container [2020-10-29 07:40:02,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:40:02" (3/3) ... [2020-10-29 07:40:02,808 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label03.c [2020-10-29 07:40:02,848 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:40:02,855 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:40:02,870 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:40:02,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:40:02,917 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:40:02,918 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:40:02,918 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:40:02,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:40:02,918 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:40:02,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:40:02,918 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:40:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:40:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 07:40:02,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:02,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:02,975 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:02,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:02,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1926237015, now seen corresponding path program 1 times [2020-10-29 07:40:02,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:02,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495803484] [2020-10-29 07:40:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:03,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:03,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:03,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 07:40:03,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:03,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-29 07:40:03,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:03,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 07:40:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:40:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:03,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:03,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:03,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:03,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:03,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:03,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:40:03,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:03,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:03,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:03,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:03,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495803484] [2020-10-29 07:40:03,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:04,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:40:04,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69086723] [2020-10-29 07:40:04,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:40:04,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:04,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:40:04,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:40:04,025 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:40:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:13,246 INFO L93 Difference]: Finished difference Result 1250 states and 2231 transitions. [2020-10-29 07:40:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:40:13,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-29 07:40:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:13,276 INFO L225 Difference]: With dead ends: 1250 [2020-10-29 07:40:13,276 INFO L226 Difference]: Without dead ends: 730 [2020-10-29 07:40:13,286 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 [2020-10-29 07:40:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-10-29 07:40:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 713. [2020-10-29 07:40:13,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-29 07:40:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1207 transitions. [2020-10-29 07:40:13,454 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1207 transitions. Word has length 30 [2020-10-29 07:40:13,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:13,455 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1207 transitions. [2020-10-29 07:40:13,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:40:13,455 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1207 transitions. [2020-10-29 07:40:13,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 07:40:13,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:13,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:13,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:40:13,467 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:13,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:13,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1477747010, now seen corresponding path program 1 times [2020-10-29 07:40:13,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:13,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191509316] [2020-10-29 07:40:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:15,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:15,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:40:15,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1738 [2020-10-29 07:40:15,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:15,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:15,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:15,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:40:15,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:15,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:15,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:15,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:15,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:15,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:40:15,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:15,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:15,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:15,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:15,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:40:15,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:15,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:15,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:15,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:40:15,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 07:40:15,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:15,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:15,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:40:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:15,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191509316] [2020-10-29 07:40:15,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:15,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:40:15,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399663617] [2020-10-29 07:40:15,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:15,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:15,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:15,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:15,811 INFO L87 Difference]: Start difference. First operand 713 states and 1207 transitions. Second operand 7 states. [2020-10-29 07:40:26,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:26,811 INFO L93 Difference]: Finished difference Result 1776 states and 3021 transitions. [2020-10-29 07:40:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:40:26,812 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-29 07:40:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:26,820 INFO L225 Difference]: With dead ends: 1776 [2020-10-29 07:40:26,820 INFO L226 Difference]: Without dead ends: 1069 [2020-10-29 07:40:26,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:40:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2020-10-29 07:40:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1042. [2020-10-29 07:40:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1042 states. [2020-10-29 07:40:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1042 states to 1042 states and 1663 transitions. [2020-10-29 07:40:26,871 INFO L78 Accepts]: Start accepts. Automaton has 1042 states and 1663 transitions. Word has length 99 [2020-10-29 07:40:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:26,872 INFO L481 AbstractCegarLoop]: Abstraction has 1042 states and 1663 transitions. [2020-10-29 07:40:26,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1042 states and 1663 transitions. [2020-10-29 07:40:26,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 07:40:26,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:26,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:26,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:40:26,875 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:26,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1049700542, now seen corresponding path program 1 times [2020-10-29 07:40:26,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:26,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139331363] [2020-10-29 07:40:26,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:26,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:27,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:27,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:40:27,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:40:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-10-29 07:40:27,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:27,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:40:27,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:28,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:28,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:28,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:28,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:28,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:40:28,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:28,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:28,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:28,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:28,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:28,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 07:40:28,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:28,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 07:40:28,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:28,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:40:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:28,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139331363] [2020-10-29 07:40:28,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:28,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:40:28,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946613634] [2020-10-29 07:40:28,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:28,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:28,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:28,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:28,301 INFO L87 Difference]: Start difference. First operand 1042 states and 1663 transitions. Second operand 7 states. [2020-10-29 07:40:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:36,687 INFO L93 Difference]: Finished difference Result 2759 states and 4517 transitions. [2020-10-29 07:40:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:40:36,689 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2020-10-29 07:40:36,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:36,700 INFO L225 Difference]: With dead ends: 2759 [2020-10-29 07:40:36,701 INFO L226 Difference]: Without dead ends: 1723 [2020-10-29 07:40:36,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:40:36,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-10-29 07:40:36,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1658. [2020-10-29 07:40:36,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1658 states. [2020-10-29 07:40:36,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2310 transitions. [2020-10-29 07:40:36,780 INFO L78 Accepts]: Start accepts. Automaton has 1658 states and 2310 transitions. Word has length 100 [2020-10-29 07:40:36,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:36,780 INFO L481 AbstractCegarLoop]: Abstraction has 1658 states and 2310 transitions. [2020-10-29 07:40:36,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:36,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1658 states and 2310 transitions. [2020-10-29 07:40:36,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 07:40:36,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:36,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:36,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:40:36,783 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:36,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:36,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1889059206, now seen corresponding path program 1 times [2020-10-29 07:40:36,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:36,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841267273] [2020-10-29 07:40:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:40:37,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:37,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-29 07:40:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:40:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:40:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:37,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 07:40:37,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:37,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:37,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:37,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:37,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:37,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:37,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 07:40:37,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:37,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 07:40:37,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:37,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:37,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:40:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:38,031 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:40:38,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841267273] [2020-10-29 07:40:38,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:40:38,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:40:38,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514117090] [2020-10-29 07:40:38,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:40:38,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:38,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:40:38,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:40:38,041 INFO L87 Difference]: Start difference. First operand 1658 states and 2310 transitions. Second operand 7 states. [2020-10-29 07:40:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:40:47,680 INFO L93 Difference]: Finished difference Result 4307 states and 6254 transitions. [2020-10-29 07:40:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:40:47,681 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-29 07:40:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:40:47,702 INFO L225 Difference]: With dead ends: 4307 [2020-10-29 07:40:47,702 INFO L226 Difference]: Without dead ends: 2962 [2020-10-29 07:40:47,707 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 [2020-10-29 07:40:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2020-10-29 07:40:47,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 2305. [2020-10-29 07:40:47,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2305 states. [2020-10-29 07:40:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3064 transitions. [2020-10-29 07:40:47,807 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3064 transitions. Word has length 104 [2020-10-29 07:40:47,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:40:47,808 INFO L481 AbstractCegarLoop]: Abstraction has 2305 states and 3064 transitions. [2020-10-29 07:40:47,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:40:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3064 transitions. [2020-10-29 07:40:47,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-29 07:40:47,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:40:47,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:40:47,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:40:47,823 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:40:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:40:47,823 INFO L82 PathProgramCache]: Analyzing trace with hash 998791190, now seen corresponding path program 1 times [2020-10-29 07:40:47,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:40:47,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542859858] [2020-10-29 07:40:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:40:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:48,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:48,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:49,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:49,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-29 07:40:49,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:40:49,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1950 [2020-10-29 07:40:49,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:49,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:49,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:40:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:40:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-29 07:40:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:40:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:50,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:50,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:40:50,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:50,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:40:50,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:50,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:40:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:40:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:40:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:40:50,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:40:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:40:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:40:50,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:40:50,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:40:50,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:40:50,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-29 07:40:50,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:40:50,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:40:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:40:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:40:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:40:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:40:51,222 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:40:51,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542859858] [2020-10-29 07:40:51,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:40:51,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:40:51,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487116402] [2020-10-29 07:40:51,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:40:51,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:40:51,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:40:51,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:40:51,228 INFO L87 Difference]: Start difference. First operand 2305 states and 3064 transitions. Second operand 6 states. [2020-10-29 07:41:02,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:02,459 INFO L93 Difference]: Finished difference Result 5572 states and 7694 transitions. [2020-10-29 07:41:02,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:41:02,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 304 [2020-10-29 07:41:02,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:02,484 INFO L225 Difference]: With dead ends: 5572 [2020-10-29 07:41:02,484 INFO L226 Difference]: Without dead ends: 4211 [2020-10-29 07:41:02,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:41:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4211 states. [2020-10-29 07:41:02,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4211 to 4189. [2020-10-29 07:41:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4189 states. [2020-10-29 07:41:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 5258 transitions. [2020-10-29 07:41:02,620 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 5258 transitions. Word has length 304 [2020-10-29 07:41:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:02,621 INFO L481 AbstractCegarLoop]: Abstraction has 4189 states and 5258 transitions. [2020-10-29 07:41:02,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:41:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 5258 transitions. [2020-10-29 07:41:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-29 07:41:02,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:02,632 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:02,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:41:02,633 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:02,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:02,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1625179114, now seen corresponding path program 1 times [2020-10-29 07:41:02,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:02,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993726243] [2020-10-29 07:41:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:03,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:07,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:07,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-29 07:41:07,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:41:07,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 07:41:07,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:07,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:41:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:07,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:41:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:07,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:08,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:08,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:08,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:08,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:41:08,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:08,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:08,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:08,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:08,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:08,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:08,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:08,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:41:08,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-29 07:41:08,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:08,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:08,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:08,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:41:08,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:41:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:41:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:08,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:09,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:09,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:41:09,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 07:41:09,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:09,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:41:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:09,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:09,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-29 07:41:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:09,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:09,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:09,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:41:09,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:09,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:41:09,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:09,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 07:41:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 66 proven. 156 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:41:09,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993726243] [2020-10-29 07:41:09,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:09,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:09,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658948074] [2020-10-29 07:41:09,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:09,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:09,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:09,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:09,689 INFO L87 Difference]: Start difference. First operand 4189 states and 5258 transitions. Second operand 7 states. [2020-10-29 07:41:21,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:21,310 INFO L93 Difference]: Finished difference Result 8770 states and 11061 transitions. [2020-10-29 07:41:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:41:21,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-29 07:41:21,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:21,335 INFO L225 Difference]: With dead ends: 8770 [2020-10-29 07:41:21,336 INFO L226 Difference]: Without dead ends: 4894 [2020-10-29 07:41:21,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:41:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4894 states. [2020-10-29 07:41:21,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4894 to 4834. [2020-10-29 07:41:21,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4834 states. [2020-10-29 07:41:21,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 5971 transitions. [2020-10-29 07:41:21,480 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 5971 transitions. Word has length 396 [2020-10-29 07:41:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:21,480 INFO L481 AbstractCegarLoop]: Abstraction has 4834 states and 5971 transitions. [2020-10-29 07:41:21,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:41:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 5971 transitions. [2020-10-29 07:41:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-29 07:41:21,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:21,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:21,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:41:21,491 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:21,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1664337993, now seen corresponding path program 1 times [2020-10-29 07:41:21,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:21,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010970201] [2020-10-29 07:41:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:21,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:22,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:23,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:26,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:26,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-29 07:41:26,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:41:26,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 07:41:26,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:26,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:41:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:41:26,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 404 [2020-10-29 07:41:26,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:26,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:26,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:26,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:26,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:26,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:41:26,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:26,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:26,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:26,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:26,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:41:26,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:26,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:27,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:27,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:41:27,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:27,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 07:41:27,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:27,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:27,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:41:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:27,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:41:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:27,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:28,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:28,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:41:28,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:28,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-10-29 07:41:28,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:28,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:28,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:28,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:28,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:41:28,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 18 proven. 117 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:41:28,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010970201] [2020-10-29 07:41:28,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:28,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:41:28,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038761104] [2020-10-29 07:41:28,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:41:28,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:28,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:41:28,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:41:28,669 INFO L87 Difference]: Start difference. First operand 4834 states and 5971 transitions. Second operand 8 states. [2020-10-29 07:41:47,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:41:47,507 INFO L93 Difference]: Finished difference Result 10948 states and 14583 transitions. [2020-10-29 07:41:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:41:47,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 399 [2020-10-29 07:41:47,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:41:47,556 INFO L225 Difference]: With dead ends: 10948 [2020-10-29 07:41:47,556 INFO L226 Difference]: Without dead ends: 8304 [2020-10-29 07:41:47,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:41:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8304 states. [2020-10-29 07:41:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8304 to 7658. [2020-10-29 07:41:47,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7658 states. [2020-10-29 07:41:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7658 states to 7658 states and 9635 transitions. [2020-10-29 07:41:47,867 INFO L78 Accepts]: Start accepts. Automaton has 7658 states and 9635 transitions. Word has length 399 [2020-10-29 07:41:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:41:47,868 INFO L481 AbstractCegarLoop]: Abstraction has 7658 states and 9635 transitions. [2020-10-29 07:41:47,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:41:47,869 INFO L276 IsEmpty]: Start isEmpty. Operand 7658 states and 9635 transitions. [2020-10-29 07:41:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-29 07:41:47,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:41:47,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:41:47,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:41:47,878 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:41:47,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:41:47,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1767009472, now seen corresponding path program 1 times [2020-10-29 07:41:47,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:41:47,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439790997] [2020-10-29 07:41:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:41:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:50,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 417 [2020-10-29 07:41:50,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:41:50,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2021 [2020-10-29 07:41:50,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:50,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:50,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:50,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:41:50,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:41:50,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:41:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:50,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:41:50,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:50,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:41:50,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:50,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:41:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:41:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:50,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:41:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:50,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:50,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:41:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:50,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 07:41:50,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:50,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:41:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:41:50,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:41:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:50,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:41:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:41:50,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:41:50,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:41:50,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 07:41:50,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:41:50,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 07:41:50,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:41:50,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:41:50,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:41:50,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:41:50,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:41:50,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:41:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:41:51,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439790997] [2020-10-29 07:41:51,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:41:51,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:41:51,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481850758] [2020-10-29 07:41:51,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:41:51,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:41:51,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:41:51,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:41:51,165 INFO L87 Difference]: Start difference. First operand 7658 states and 9635 transitions. Second operand 7 states. [2020-10-29 07:42:06,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:06,631 INFO L93 Difference]: Finished difference Result 17877 states and 23593 transitions. [2020-10-29 07:42:06,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:42:06,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 403 [2020-10-29 07:42:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:06,688 INFO L225 Difference]: With dead ends: 17877 [2020-10-29 07:42:06,689 INFO L226 Difference]: Without dead ends: 10841 [2020-10-29 07:42:06,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:42:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10841 states. [2020-10-29 07:42:06,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10841 to 10777. [2020-10-29 07:42:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10777 states. [2020-10-29 07:42:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10777 states to 10777 states and 13402 transitions. [2020-10-29 07:42:07,115 INFO L78 Accepts]: Start accepts. Automaton has 10777 states and 13402 transitions. Word has length 403 [2020-10-29 07:42:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:07,116 INFO L481 AbstractCegarLoop]: Abstraction has 10777 states and 13402 transitions. [2020-10-29 07:42:07,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 10777 states and 13402 transitions. [2020-10-29 07:42:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-29 07:42:07,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:07,136 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:07,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:42:07,136 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:07,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:07,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1920389788, now seen corresponding path program 1 times [2020-10-29 07:42:07,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:07,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363282622] [2020-10-29 07:42:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:07,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:12,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:12,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-29 07:42:12,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 07:42:12,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:12,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:42:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:42:12,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:12,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:12,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:12,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:12,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:12,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:12,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:12,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:12,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:12,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:12,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:12,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:12,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:42:12,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:12,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:42:12,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:12,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:12,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:12,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:12,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:12,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:42:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:12,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:12,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:12,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:12,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:12,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:42:12,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:12,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:12,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:12,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:12,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:42:12,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:12,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:42:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:13,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:13,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:13,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:42:13,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 07:42:13,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:13,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:13,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:42:13,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:42:13,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363282622] [2020-10-29 07:42:13,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:13,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:13,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179799023] [2020-10-29 07:42:13,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:13,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:13,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:13,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:13,305 INFO L87 Difference]: Start difference. First operand 10777 states and 13402 transitions. Second operand 7 states. [2020-10-29 07:42:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:24,575 INFO L93 Difference]: Finished difference Result 21006 states and 26449 transitions. [2020-10-29 07:42:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:42:24,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 498 [2020-10-29 07:42:24,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:24,624 INFO L225 Difference]: With dead ends: 21006 [2020-10-29 07:42:24,624 INFO L226 Difference]: Without dead ends: 10851 [2020-10-29 07:42:24,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:42:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10851 states. [2020-10-29 07:42:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10851 to 10809. [2020-10-29 07:42:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10809 states. [2020-10-29 07:42:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10809 states to 10809 states and 12999 transitions. [2020-10-29 07:42:24,937 INFO L78 Accepts]: Start accepts. Automaton has 10809 states and 12999 transitions. Word has length 498 [2020-10-29 07:42:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:24,938 INFO L481 AbstractCegarLoop]: Abstraction has 10809 states and 12999 transitions. [2020-10-29 07:42:24,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:24,939 INFO L276 IsEmpty]: Start isEmpty. Operand 10809 states and 12999 transitions. [2020-10-29 07:42:24,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-29 07:42:24,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:24,950 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:24,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:42:24,950 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:24,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:24,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1965792494, now seen corresponding path program 1 times [2020-10-29 07:42:24,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:24,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587244277] [2020-10-29 07:42:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:30,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:30,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-29 07:42:30,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:42:30,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4950 [2020-10-29 07:42:30,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:30,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:30,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:30,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:42:30,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:42:30,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:30,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:30,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:30,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:30,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:30,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:30,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:42:30,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:30,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:30,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:30,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:30,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:30,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:30,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:42:30,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:30,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 07:42:30,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:30,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:30,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:30,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:30,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:30,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:42:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:30,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:30,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:30,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:42:30,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:30,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:42:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:30,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:42:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:30,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:30,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:30,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 07:42:30,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:30,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 07:42:30,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:30,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:30,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:42:30,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:42:31,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587244277] [2020-10-29 07:42:31,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:31,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:42:31,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556511659] [2020-10-29 07:42:31,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:42:31,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:31,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:42:31,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:42:31,090 INFO L87 Difference]: Start difference. First operand 10809 states and 12999 transitions. Second operand 7 states. [2020-10-29 07:42:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:42:43,613 INFO L93 Difference]: Finished difference Result 23587 states and 29212 transitions. [2020-10-29 07:42:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:42:43,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 514 [2020-10-29 07:42:43,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:42:43,682 INFO L225 Difference]: With dead ends: 23587 [2020-10-29 07:42:43,682 INFO L226 Difference]: Without dead ends: 13400 [2020-10-29 07:42:43,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:42:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13400 states. [2020-10-29 07:42:44,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13400 to 13373. [2020-10-29 07:42:44,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13373 states. [2020-10-29 07:42:44,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13373 states to 13373 states and 16142 transitions. [2020-10-29 07:42:44,124 INFO L78 Accepts]: Start accepts. Automaton has 13373 states and 16142 transitions. Word has length 514 [2020-10-29 07:42:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:42:44,126 INFO L481 AbstractCegarLoop]: Abstraction has 13373 states and 16142 transitions. [2020-10-29 07:42:44,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:42:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand 13373 states and 16142 transitions. [2020-10-29 07:42:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2020-10-29 07:42:44,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:42:44,146 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:42:44,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:42:44,146 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:42:44,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:42:44,147 INFO L82 PathProgramCache]: Analyzing trace with hash -644469140, now seen corresponding path program 1 times [2020-10-29 07:42:44,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:42:44,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444312302] [2020-10-29 07:42:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:42:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:44,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:48,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 633 [2020-10-29 07:42:49,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:42:49,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 07:42:49,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:42:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:42:49,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-29 07:42:49,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:42:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:42:49,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:42:49,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:49,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:49,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:42:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:49,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:49,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:42:49,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 07:42:49,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:49,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:42:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:49,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:42:49,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:42:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:49,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:50,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:50,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:42:50,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-29 07:42:50,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:50,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:42:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:42:50,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:42:50,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:50,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:42:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:50,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 07:42:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:42:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 07:42:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:50,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-29 07:42:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:50,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-29 07:42:50,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:42:50,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:42:50,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:42:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 07:42:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:42:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 07:42:50,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:42:50,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:42:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:42:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:42:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 07:42:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:42:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 485 proven. 4 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-10-29 07:42:50,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444312302] [2020-10-29 07:42:50,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:42:50,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:42:50,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293331035] [2020-10-29 07:42:50,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:42:50,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:42:50,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:42:50,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:42:50,859 INFO L87 Difference]: Start difference. First operand 13373 states and 16142 transitions. Second operand 8 states. [2020-10-29 07:43:00,567 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:43:09,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:09,380 INFO L93 Difference]: Finished difference Result 31573 states and 40187 transitions. [2020-10-29 07:43:09,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 07:43:09,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 615 [2020-10-29 07:43:09,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:09,467 INFO L225 Difference]: With dead ends: 31573 [2020-10-29 07:43:09,467 INFO L226 Difference]: Without dead ends: 18814 [2020-10-29 07:43:09,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:43:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18814 states. [2020-10-29 07:43:09,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18814 to 18398. [2020-10-29 07:43:09,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18398 states. [2020-10-29 07:43:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18398 states to 18398 states and 21977 transitions. [2020-10-29 07:43:10,005 INFO L78 Accepts]: Start accepts. Automaton has 18398 states and 21977 transitions. Word has length 615 [2020-10-29 07:43:10,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:10,006 INFO L481 AbstractCegarLoop]: Abstraction has 18398 states and 21977 transitions. [2020-10-29 07:43:10,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:43:10,006 INFO L276 IsEmpty]: Start isEmpty. Operand 18398 states and 21977 transitions. [2020-10-29 07:43:10,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2020-10-29 07:43:10,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:10,143 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:10,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:43:10,143 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:10,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:10,145 INFO L82 PathProgramCache]: Analyzing trace with hash -67124445, now seen corresponding path program 1 times [2020-10-29 07:43:10,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:10,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101672429] [2020-10-29 07:43:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:10,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:10,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:15,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:15,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 695 [2020-10-29 07:43:15,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:43:15,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 07:43:15,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:15,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:43:15,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 07:43:15,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:15,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:15,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:15,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:15,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:15,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:43:15,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:15,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:15,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:15,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:15,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:15,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:15,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:15,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:43:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:43:15,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:15,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:43:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:43:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-29 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:16,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-29 07:43:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:16,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-10-29 07:43:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:16,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:16,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:16,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:43:16,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:16,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:43:16,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:16,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:43:16,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:16,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:16,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 555 [2020-10-29 07:43:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:16,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:16,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:43:16,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:43:16,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:16,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-29 07:43:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 286 proven. 176 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2020-10-29 07:43:17,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101672429] [2020-10-29 07:43:17,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:43:17,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:43:17,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958195930] [2020-10-29 07:43:17,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:43:17,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:17,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:43:17,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:43:17,411 INFO L87 Difference]: Start difference. First operand 18398 states and 21977 transitions. Second operand 7 states. [2020-10-29 07:43:19,975 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:43:22,920 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:43:35,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:43:35,463 INFO L93 Difference]: Finished difference Result 38376 states and 45804 transitions. [2020-10-29 07:43:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:43:35,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 677 [2020-10-29 07:43:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:43:35,539 INFO L225 Difference]: With dead ends: 38376 [2020-10-29 07:43:35,539 INFO L226 Difference]: Without dead ends: 20289 [2020-10-29 07:43:35,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:43:35,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2020-10-29 07:43:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 20259. [2020-10-29 07:43:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20259 states. [2020-10-29 07:43:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20259 states to 20259 states and 23879 transitions. [2020-10-29 07:43:36,016 INFO L78 Accepts]: Start accepts. Automaton has 20259 states and 23879 transitions. Word has length 677 [2020-10-29 07:43:36,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:43:36,017 INFO L481 AbstractCegarLoop]: Abstraction has 20259 states and 23879 transitions. [2020-10-29 07:43:36,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:43:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 20259 states and 23879 transitions. [2020-10-29 07:43:36,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2020-10-29 07:43:36,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:36,039 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:36,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:43:36,039 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:36,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:36,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1633975141, now seen corresponding path program 1 times [2020-10-29 07:43:36,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:36,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568670709] [2020-10-29 07:43:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:36,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:39,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 707 [2020-10-29 07:43:39,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:43:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3205 [2020-10-29 07:43:39,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:39,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-29 07:43:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:43:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:39,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:39,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:39,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:39,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:43:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:39,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:39,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 07:43:39,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:39,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:43:39,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:39,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:43:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:43:39,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:39,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-29 07:43:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:39,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:43:39,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 07:43:39,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:39,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-29 07:43:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:43:40,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-29 07:43:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:40,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:40,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:43:40,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:43:40,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:40,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:43:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:43:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:43:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0