/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=SHALLOWEST --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/Problem04_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:09:32,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:09:32,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:09:32,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:09:32,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:09:32,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:09:32,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:09:32,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:09:32,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:09:32,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:09:32,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:09:32,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:09:32,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:09:32,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:09:32,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:09:32,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:09:32,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:09:32,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:09:32,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:09:32,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:09:32,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:09:32,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:09:32,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:09:32,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:09:32,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:09:32,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:09:32,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:09:32,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:09:32,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:09:32,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:09:32,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:09:32,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:09:32,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:09:32,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:09:32,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:09:32,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:09:32,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:09:32,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:09:32,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:09:32,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:09:32,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:09:32,237 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 [2020-10-26 21:09:32,287 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:09:32,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:09:32,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:09:32,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:09:32,293 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:09:32,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:09:32,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:09:32,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:09:32,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:09:32,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:09:32,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:09:32,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:09:32,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:09:32,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:09:32,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:09:32,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:09:32,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:09:32,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:09:32,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:09:32,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:09:32,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:09:32,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:09:32,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:09:32,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:09:32,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:09:32,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:09:32,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:09:32,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:09:32,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:09:32,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:09:32,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:09:32,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:09:32,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:09:32,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:09:32,808 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:09:32,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label55.c [2020-10-26 21:09:32,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b5690efc/8ce41ccae21c41b7b8a05e7950df87ba/FLAG8f64b3b37 [2020-10-26 21:09:33,983 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:09:33,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label55.c [2020-10-26 21:09:34,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b5690efc/8ce41ccae21c41b7b8a05e7950df87ba/FLAG8f64b3b37 [2020-10-26 21:09:34,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8b5690efc/8ce41ccae21c41b7b8a05e7950df87ba [2020-10-26 21:09:34,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:09:34,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:09:34,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:09:34,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:09:34,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:09:34,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:09:34" (1/1) ... [2020-10-26 21:09:34,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d2294d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:34, skipping insertion in model container [2020-10-26 21:09:34,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:09:34" (1/1) ... [2020-10-26 21:09:34,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:09:34,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:09:36,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:09:36,128 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:09:36,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:09:36,942 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:09:36,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36 WrapperNode [2020-10-26 21:09:36,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:09:36,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:09:36,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:09:36,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:09:36,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36" (1/1) ... [2020-10-26 21:09:36,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36" (1/1) ... [2020-10-26 21:09:37,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36" (1/1) ... [2020-10-26 21:09:37,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36" (1/1) ... [2020-10-26 21:09:37,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36" (1/1) ... [2020-10-26 21:09:37,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36" (1/1) ... [2020-10-26 21:09:37,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36" (1/1) ... [2020-10-26 21:09:37,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:09:37,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:09:37,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:09:37,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:09:37,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36" (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 [2020-10-26 21:09:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:09:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:09:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:09:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:09:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:09:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:09:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:09:37,353 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:09:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:09:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:09:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:09:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:09:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:09:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:09:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:09:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:09:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:09:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:09:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:09:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:09:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:09:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:09:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:09:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:09:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:09:42,918 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:09:42,919 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:09:42,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:09:42 BoogieIcfgContainer [2020-10-26 21:09:42,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:09:42,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:09:42,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:09:42,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:09:42,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:09:34" (1/3) ... [2020-10-26 21:09:42,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e596558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:09:42, skipping insertion in model container [2020-10-26 21:09:42,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:09:36" (2/3) ... [2020-10-26 21:09:42,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e596558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:09:42, skipping insertion in model container [2020-10-26 21:09:42,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:09:42" (3/3) ... [2020-10-26 21:09:42,937 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label55.c [2020-10-26 21:09:42,951 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:09:42,957 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:09:42,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:09:43,014 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:09:43,015 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:09:43,015 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:09:43,015 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:09:43,015 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:09:43,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:09:43,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:09:43,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:09:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:09:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2020-10-26 21:09:43,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:43,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:43,126 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:43,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:43,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1513128040, now seen corresponding path program 1 times [2020-10-26 21:09:43,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:43,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122142361] [2020-10-26 21:09:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:44,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:49,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:49,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 803 [2020-10-26 21:09:49,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5128 [2020-10-26 21:09:49,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:09:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:09:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 794 [2020-10-26 21:09:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:09:50,221 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:09:50,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:50,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:50,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:50,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:50,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:50,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 21:09:50,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:50,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:09:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:09:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:09:51,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122142361] [2020-10-26 21:09:51,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:09:51,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:09:51,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227290755] [2020-10-26 21:09:51,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:09:51,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:51,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:09:51,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:09:51,364 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 4 states. [2020-10-26 21:09:51,629 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:10:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:10:02,411 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-26 21:10:02,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:10:02,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 787 [2020-10-26 21:10:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:10:02,466 INFO L225 Difference]: With dead ends: 2677 [2020-10-26 21:10:02,466 INFO L226 Difference]: Without dead ends: 1703 [2020-10-26 21:10:02,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:10:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-26 21:10:02,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-26 21:10:02,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-26 21:10:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3006 transitions. [2020-10-26 21:10:02,691 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3006 transitions. Word has length 787 [2020-10-26 21:10:02,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:10:02,695 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3006 transitions. [2020-10-26 21:10:02,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:10:02,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3006 transitions. [2020-10-26 21:10:02,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2020-10-26 21:10:02,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:10:02,731 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:10:02,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:10:02,733 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:10:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:10:02,735 INFO L82 PathProgramCache]: Analyzing trace with hash -950410122, now seen corresponding path program 1 times [2020-10-26 21:10:02,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:10:02,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354963567] [2020-10-26 21:10:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:10:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:02,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:06,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:08,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:08,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 813 [2020-10-26 21:10:08,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:10:08,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-26 21:10:08,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:10:08,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:08,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:10:08,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-26 21:10:08,808 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:10:08,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:08,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:08,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:08,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:08,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:08,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:10:08,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-26 21:10:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:08,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:08,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:10:08,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:08,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 21:10:08,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:10:08,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:10:09,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354963567] [2020-10-26 21:10:09,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:10:09,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:10:09,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647091779] [2020-10-26 21:10:09,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:10:09,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:10:09,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:10:09,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:10:09,362 INFO L87 Difference]: Start difference. First operand 1690 states and 3006 transitions. Second operand 8 states. [2020-10-26 21:10:09,521 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:10:12,054 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-10-26 21:10:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:10:22,917 INFO L93 Difference]: Finished difference Result 4321 states and 7580 transitions. [2020-10-26 21:10:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:10:22,923 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 795 [2020-10-26 21:10:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:10:22,939 INFO L225 Difference]: With dead ends: 4321 [2020-10-26 21:10:22,939 INFO L226 Difference]: Without dead ends: 2637 [2020-10-26 21:10:22,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:10:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2020-10-26 21:10:23,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2568. [2020-10-26 21:10:23,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2568 states. [2020-10-26 21:10:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 4260 transitions. [2020-10-26 21:10:23,048 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 4260 transitions. Word has length 795 [2020-10-26 21:10:23,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:10:23,049 INFO L481 AbstractCegarLoop]: Abstraction has 2568 states and 4260 transitions. [2020-10-26 21:10:23,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:10:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 4260 transitions. [2020-10-26 21:10:23,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 801 [2020-10-26 21:10:23,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:10:23,062 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:10:23,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:10:23,062 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:10:23,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:10:23,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1452454043, now seen corresponding path program 1 times [2020-10-26 21:10:23,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:10:23,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994310259] [2020-10-26 21:10:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:10:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:27,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:28,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:28,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 818 [2020-10-26 21:10:28,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:10:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-26 21:10:28,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:28,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:10:28,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:28,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 21:10:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:28,626 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:10:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:28,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:28,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:28,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:28,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:28,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 21:10:28,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:28,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:28,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:10:28,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:28,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:28,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-26 21:10:28,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 21:10:28,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:10:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:10:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:10:29,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994310259] [2020-10-26 21:10:29,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:10:29,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:10:29,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925838127] [2020-10-26 21:10:29,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:10:29,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:10:29,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:10:29,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:10:29,635 INFO L87 Difference]: Start difference. First operand 2568 states and 4260 transitions. Second operand 7 states. [2020-10-26 21:10:32,656 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:10:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:10:42,649 INFO L93 Difference]: Finished difference Result 7948 states and 13316 transitions. [2020-10-26 21:10:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:10:42,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 800 [2020-10-26 21:10:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:10:42,680 INFO L225 Difference]: With dead ends: 7948 [2020-10-26 21:10:42,680 INFO L226 Difference]: Without dead ends: 5386 [2020-10-26 21:10:42,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:10:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2020-10-26 21:10:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 5297. [2020-10-26 21:10:42,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5297 states. [2020-10-26 21:10:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5297 states to 5297 states and 7863 transitions. [2020-10-26 21:10:42,876 INFO L78 Accepts]: Start accepts. Automaton has 5297 states and 7863 transitions. Word has length 800 [2020-10-26 21:10:42,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:10:42,877 INFO L481 AbstractCegarLoop]: Abstraction has 5297 states and 7863 transitions. [2020-10-26 21:10:42,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:10:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5297 states and 7863 transitions. [2020-10-26 21:10:42,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2020-10-26 21:10:42,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:10:42,897 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:10:42,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:10:42,897 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:10:42,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:10:42,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1819912803, now seen corresponding path program 1 times [2020-10-26 21:10:42,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:10:42,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399686717] [2020-10-26 21:10:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:10:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:42,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:45,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:48,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:48,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-26 21:10:48,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:10:48,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-26 21:10:48,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:10:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:48,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:10:48,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:48,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:48,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:48,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:48,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:48,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:48,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:48,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:48,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:48,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:48,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:10:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:48,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 21:10:48,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-26 21:10:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:10:48,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399686717] [2020-10-26 21:10:48,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:10:48,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:10:48,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342584872] [2020-10-26 21:10:48,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:10:48,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:10:48,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:10:48,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:10:48,989 INFO L87 Difference]: Start difference. First operand 5297 states and 7863 transitions. Second operand 7 states. [2020-10-26 21:10:49,136 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-26 21:10:57,039 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-26 21:11:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:11:02,812 INFO L93 Difference]: Finished difference Result 12719 states and 19551 transitions. [2020-10-26 21:11:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 21:11:02,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 804 [2020-10-26 21:11:02,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:11:02,860 INFO L225 Difference]: With dead ends: 12719 [2020-10-26 21:11:02,860 INFO L226 Difference]: Without dead ends: 7428 [2020-10-26 21:11:02,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:11:02,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7428 states. [2020-10-26 21:11:03,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7428 to 7153. [2020-10-26 21:11:03,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7153 states. [2020-10-26 21:11:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 10206 transitions. [2020-10-26 21:11:03,196 INFO L78 Accepts]: Start accepts. Automaton has 7153 states and 10206 transitions. Word has length 804 [2020-10-26 21:11:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:11:03,197 INFO L481 AbstractCegarLoop]: Abstraction has 7153 states and 10206 transitions. [2020-10-26 21:11:03,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:11:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7153 states and 10206 transitions. [2020-10-26 21:11:03,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2020-10-26 21:11:03,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:11:03,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:11:03,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:11:03,225 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:11:03,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:11:03,225 INFO L82 PathProgramCache]: Analyzing trace with hash 858753048, now seen corresponding path program 1 times [2020-10-26 21:11:03,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:11:03,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512960345] [2020-10-26 21:11:03,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:11:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:03,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:04,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:08,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:08,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 841 [2020-10-26 21:11:08,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:11:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-26 21:11:08,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:11:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:11:08,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 21:11:08,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:11:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:08,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:08,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:08,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:11:08,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:11:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:11:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:11:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:08,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:11:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:08,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:08,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:08,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:08,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:11:08,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:11:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 21:11:08,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:11:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:11:08,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:11:08,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:08,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:11:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:09,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:09,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 21:11:09,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:11:09,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:11:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:11:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-26 21:11:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:11:09,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512960345] [2020-10-26 21:11:09,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:11:09,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:11:09,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920511203] [2020-10-26 21:11:09,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:11:09,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:11:09,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:11:09,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:11:09,757 INFO L87 Difference]: Start difference. First operand 7153 states and 10206 transitions. Second operand 8 states. [2020-10-26 21:11:17,992 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-26 21:11:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:11:23,724 INFO L93 Difference]: Finished difference Result 18180 states and 26339 transitions. [2020-10-26 21:11:23,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:11:23,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 821 [2020-10-26 21:11:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:11:23,779 INFO L225 Difference]: With dead ends: 18180 [2020-10-26 21:11:23,779 INFO L226 Difference]: Without dead ends: 11033 [2020-10-26 21:11:23,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:11:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11033 states. [2020-10-26 21:11:24,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11033 to 10736. [2020-10-26 21:11:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10736 states. [2020-10-26 21:11:24,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10736 states to 10736 states and 14477 transitions. [2020-10-26 21:11:24,166 INFO L78 Accepts]: Start accepts. Automaton has 10736 states and 14477 transitions. Word has length 821 [2020-10-26 21:11:24,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:11:24,166 INFO L481 AbstractCegarLoop]: Abstraction has 10736 states and 14477 transitions. [2020-10-26 21:11:24,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:11:24,167 INFO L276 IsEmpty]: Start isEmpty. Operand 10736 states and 14477 transitions. [2020-10-26 21:11:24,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2020-10-26 21:11:24,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:11:24,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:11:24,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:11:24,206 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:11:24,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:11:24,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1587737236, now seen corresponding path program 1 times [2020-10-26 21:11:24,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:11:24,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605707824] [2020-10-26 21:11:24,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:11:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:26,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:28,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:28,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 843 [2020-10-26 21:11:28,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:11:28,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4539 [2020-10-26 21:11:28,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:11:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:11:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-26 21:11:28,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:29,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:11:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:29,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:29,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:29,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:11:29,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:29,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:11:29,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:11:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:11:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:29,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:11:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:29,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:29,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:29,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:11:29,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:29,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 21:11:29,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:11:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:29,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:11:29,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:29,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:11:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:29,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:29,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:29,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-26 21:11:29,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:29,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:11:29,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:29,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:11:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:29,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:11:29,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:33,707 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-26 21:11:33,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605707824] [2020-10-26 21:11:33,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:11:33,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:11:33,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988093818] [2020-10-26 21:11:33,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 21:11:33,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:11:33,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 21:11:33,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:11:33,711 INFO L87 Difference]: Start difference. First operand 10736 states and 14477 transitions. Second operand 5 states. [2020-10-26 21:11:34,127 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-26 21:11:45,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:11:45,297 INFO L93 Difference]: Finished difference Result 22365 states and 30353 transitions. [2020-10-26 21:11:45,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:11:45,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 823 [2020-10-26 21:11:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:11:45,334 INFO L225 Difference]: With dead ends: 22365 [2020-10-26 21:11:45,334 INFO L226 Difference]: Without dead ends: 10714 [2020-10-26 21:11:45,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:11:45,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10714 states. [2020-10-26 21:11:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10714 to 10668. [2020-10-26 21:11:45,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10668 states. [2020-10-26 21:11:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10668 states to 10668 states and 12380 transitions. [2020-10-26 21:11:45,619 INFO L78 Accepts]: Start accepts. Automaton has 10668 states and 12380 transitions. Word has length 823 [2020-10-26 21:11:45,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:11:45,619 INFO L481 AbstractCegarLoop]: Abstraction has 10668 states and 12380 transitions. [2020-10-26 21:11:45,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 21:11:45,620 INFO L276 IsEmpty]: Start isEmpty. Operand 10668 states and 12380 transitions. [2020-10-26 21:11:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 880 [2020-10-26 21:11:45,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:11:45,655 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:11:45,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:11:45,655 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:11:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:11:45,656 INFO L82 PathProgramCache]: Analyzing trace with hash 136230020, now seen corresponding path program 1 times [2020-10-26 21:11:45,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:11:45,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911327526] [2020-10-26 21:11:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:11:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:46,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:50,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 899 [2020-10-26 21:11:50,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:11:50,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-26 21:11:50,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 21:11:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:11:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 866 [2020-10-26 21:11:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:51,405 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:11:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:11:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:51,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:51,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:11:51,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:51,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 21:11:51,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:51,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:11:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:51,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:11:51,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:51,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:11:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:51,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:51,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:51,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:11:51,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:11:51,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 21:11:51,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:11:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:11:51,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:11:51,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:11:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:11:51,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:11:51,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:11:51,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:11:51,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:11:51,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-26 21:11:51,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:11:51,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:11:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:11:51,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:11:51,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:11:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 21:11:52,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911327526] [2020-10-26 21:11:52,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:11:52,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:11:52,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017992295] [2020-10-26 21:11:52,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:11:52,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:11:52,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:11:52,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:11:52,587 INFO L87 Difference]: Start difference. First operand 10668 states and 12380 transitions. Second operand 7 states. [2020-10-26 21:11:52,877 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:11:53,976 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:12:08,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:12:08,160 INFO L93 Difference]: Finished difference Result 39224 states and 48499 transitions. [2020-10-26 21:12:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:12:08,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 879 [2020-10-26 21:12:08,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:12:08,254 INFO L225 Difference]: With dead ends: 39224 [2020-10-26 21:12:08,254 INFO L226 Difference]: Without dead ends: 28562 [2020-10-26 21:12:08,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:12:08,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28562 states. [2020-10-26 21:12:08,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28562 to 28524. [2020-10-26 21:12:08,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28524 states. [2020-10-26 21:12:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28524 states to 28524 states and 34350 transitions. [2020-10-26 21:12:09,023 INFO L78 Accepts]: Start accepts. Automaton has 28524 states and 34350 transitions. Word has length 879 [2020-10-26 21:12:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:12:09,024 INFO L481 AbstractCegarLoop]: Abstraction has 28524 states and 34350 transitions. [2020-10-26 21:12:09,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:12:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 28524 states and 34350 transitions. [2020-10-26 21:12:09,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2020-10-26 21:12:09,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:12:09,115 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:12:09,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:12:09,115 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:12:09,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:12:09,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1526353205, now seen corresponding path program 1 times [2020-10-26 21:12:09,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:12:09,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069196611] [2020-10-26 21:12:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:12:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:10,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:14,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:14,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 906 [2020-10-26 21:12:14,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:12:14,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 21:12:14,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:12:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:12:14,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 21:12:14,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:14,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:12:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:14,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:14,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:14,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:12:14,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:14,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 21:12:14,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:12:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:12:14,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:14,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:12:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:14,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:14,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:14,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:14,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:12:14,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:12:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 21:12:14,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:12:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:12:14,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:12:14,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:14,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:12:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:14,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:14,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:14,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:12:14,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:14,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 21:12:14,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:12:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:12:14,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 21:12:14,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-26 21:12:15,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069196611] [2020-10-26 21:12:15,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:12:15,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:12:15,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673924082] [2020-10-26 21:12:15,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:12:15,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:12:15,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:12:15,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:12:15,213 INFO L87 Difference]: Start difference. First operand 28524 states and 34350 transitions. Second operand 8 states. [2020-10-26 21:12:15,341 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:12:18,570 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:12:24,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:12:24,978 INFO L93 Difference]: Finished difference Result 75195 states and 96331 transitions. [2020-10-26 21:12:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:12:24,979 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 886 [2020-10-26 21:12:24,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:12:25,155 INFO L225 Difference]: With dead ends: 75195 [2020-10-26 21:12:25,156 INFO L226 Difference]: Without dead ends: 46681 [2020-10-26 21:12:25,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:12:25,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46681 states. [2020-10-26 21:12:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46681 to 46415. [2020-10-26 21:12:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46415 states. [2020-10-26 21:12:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46415 states to 46415 states and 57834 transitions. [2020-10-26 21:12:26,485 INFO L78 Accepts]: Start accepts. Automaton has 46415 states and 57834 transitions. Word has length 886 [2020-10-26 21:12:26,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:12:26,486 INFO L481 AbstractCegarLoop]: Abstraction has 46415 states and 57834 transitions. [2020-10-26 21:12:26,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:12:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 46415 states and 57834 transitions. [2020-10-26 21:12:26,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2020-10-26 21:12:26,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:12:26,647 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:12:26,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:12:26,647 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:12:26,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:12:26,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1424637228, now seen corresponding path program 1 times [2020-10-26 21:12:26,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:12:26,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895538951] [2020-10-26 21:12:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:12:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:27,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:29,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 951 [2020-10-26 21:12:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:12:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-26 21:12:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:12:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-26 21:12:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 791 [2020-10-26 21:12:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:32,887 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:12:32,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:12:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:32,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:32,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:32,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:12:32,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:32,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:12:32,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:32,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:32,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:12:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:32,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:32,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:12:32,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:12:32,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:32,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:12:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:32,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:33,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:33,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:12:33,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 21:12:33,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:12:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-26 21:12:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-26 21:12:33,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895538951] [2020-10-26 21:12:33,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:12:33,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:12:33,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403426887] [2020-10-26 21:12:33,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 21:12:33,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:12:33,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 21:12:33,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:12:33,910 INFO L87 Difference]: Start difference. First operand 46415 states and 57834 transitions. Second operand 5 states. [2020-10-26 21:12:34,698 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:12:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:12:42,870 INFO L93 Difference]: Finished difference Result 112195 states and 144370 transitions. [2020-10-26 21:12:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:12:42,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 931 [2020-10-26 21:12:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:12:43,420 INFO L225 Difference]: With dead ends: 112195 [2020-10-26 21:12:43,420 INFO L226 Difference]: Without dead ends: 65790 [2020-10-26 21:12:43,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:12:43,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65790 states. [2020-10-26 21:12:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65790 to 65783. [2020-10-26 21:12:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65783 states. [2020-10-26 21:12:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65783 states to 65783 states and 81199 transitions. [2020-10-26 21:12:45,554 INFO L78 Accepts]: Start accepts. Automaton has 65783 states and 81199 transitions. Word has length 931 [2020-10-26 21:12:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:12:45,555 INFO L481 AbstractCegarLoop]: Abstraction has 65783 states and 81199 transitions. [2020-10-26 21:12:45,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 21:12:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 65783 states and 81199 transitions. [2020-10-26 21:12:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2020-10-26 21:12:45,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:12:45,975 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:12:45,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 21:12:45,975 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:12:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:12:45,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1750446843, now seen corresponding path program 1 times [2020-10-26 21:12:45,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:12:45,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078857162] [2020-10-26 21:12:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:12:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:46,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:48,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:51,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:51,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1056 [2020-10-26 21:12:51,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:12:51,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-26 21:12:51,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:12:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:12:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-26 21:12:51,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:12:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:51,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:51,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:51,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:12:51,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 21:12:51,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:51,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:51,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:51,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:12:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:51,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:51,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:51,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:12:51,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:51,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 21:12:51,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:12:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:12:51,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:12:51,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:12:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:51,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:51,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:51,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-26 21:12:51,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:12:51,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-26 21:12:51,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:12:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:12:51,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 21:12:51,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:51,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-26 21:12:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:51,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:51,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:51,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-26 21:12:51,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 21:12:51,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:12:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:12:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-26 21:12:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:52,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-26 21:12:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:12:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:12:52,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:12:52,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 21:12:52,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:12:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:12:52,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:12:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:12:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 21:12:52,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:12:52,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:12:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 287 proven. 99 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-26 21:12:52,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078857162] [2020-10-26 21:12:52,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:12:52,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:12:52,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901779785] [2020-10-26 21:12:52,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:12:52,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:12:52,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:12:52,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:12:52,945 INFO L87 Difference]: Start difference. First operand 65783 states and 81199 transitions. Second operand 8 states. [2020-10-26 21:12:53,088 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:12:56,622 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:13:03,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:13:03,344 INFO L93 Difference]: Finished difference Result 147566 states and 183925 transitions. [2020-10-26 21:13:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:13:03,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1032 [2020-10-26 21:13:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:13:03,580 INFO L225 Difference]: With dead ends: 147566 [2020-10-26 21:13:03,581 INFO L226 Difference]: Without dead ends: 81793 [2020-10-26 21:13:03,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:13:03,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81793 states.