/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/Problem05_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:21:20,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:21:20,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:21:20,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:21:20,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:21:20,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:21:20,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:21:20,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:21:20,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:21:20,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:21:20,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:21:20,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:21:20,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:21:20,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:21:20,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:21:20,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:21:20,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:21:20,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:21:20,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:21:20,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:21:20,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:21:20,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:21:20,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:21:20,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:21:20,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:21:20,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:21:20,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:21:20,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:21:20,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:21:20,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:21:20,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:21:20,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:21:20,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:21:20,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:21:20,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:21:20,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:21:20,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:21:20,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:21:20,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:21:20,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:21:20,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:21:20,287 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 21:21:20,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:21:20,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:21:20,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:21:20,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:21:20,341 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:21:20,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:21:20,341 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:21:20,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:21:20,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:21:20,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:21:20,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:21:20,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:21:20,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:21:20,344 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:21:20,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:21:20,344 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:21:20,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:21:20,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:21:20,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:21:20,345 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:21:20,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:21:20,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:21:20,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:21:20,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:21:20,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:21:20,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:21:20,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:21:20,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:21:20,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:21:20,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:21:20,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:21:20,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:21:20,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:21:20,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:21:20,782 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:21:20,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label46.c [2020-10-26 21:21:20,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2190015d4/c2bc6f78b8604b5eb096e617c2be4e67/FLAG222c9c0ae [2020-10-26 21:21:22,308 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:21:22,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label46.c [2020-10-26 21:21:22,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2190015d4/c2bc6f78b8604b5eb096e617c2be4e67/FLAG222c9c0ae [2020-10-26 21:21:22,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2190015d4/c2bc6f78b8604b5eb096e617c2be4e67 [2020-10-26 21:21:22,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:21:22,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:21:22,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:21:22,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:21:22,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:21:22,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:21:22" (1/1) ... [2020-10-26 21:21:22,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfc022e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:22, skipping insertion in model container [2020-10-26 21:21:22,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:21:22" (1/1) ... [2020-10-26 21:21:22,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:21:22,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:21:25,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:21:25,149 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:21:26,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:21:26,417 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:21:26,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26 WrapperNode [2020-10-26 21:21:26,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:21:26,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:21:26,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:21:26,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:21:26,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26" (1/1) ... [2020-10-26 21:21:26,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26" (1/1) ... [2020-10-26 21:21:26,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26" (1/1) ... [2020-10-26 21:21:26,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26" (1/1) ... [2020-10-26 21:21:26,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26" (1/1) ... [2020-10-26 21:21:26,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26" (1/1) ... [2020-10-26 21:21:26,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26" (1/1) ... [2020-10-26 21:21:27,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:21:27,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:21:27,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:21:27,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:21:27,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26" (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 21:21:27,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:21:27,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:21:27,148 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:21:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:21:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:21:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:21:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:21:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:21:27,149 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-26 21:21:27,150 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-26 21:21:27,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-26 21:21:27,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:21:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:21:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:21:27,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:21:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:21:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:21:27,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-26 21:21:27,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-26 21:21:27,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-26 21:21:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:21:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:21:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:21:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:21:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:21:27,154 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:21:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:21:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:21:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:21:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:21:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:21:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:21:27,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:21:36,999 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:21:37,000 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:21:37,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:37 BoogieIcfgContainer [2020-10-26 21:21:37,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:21:37,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:21:37,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:21:37,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:21:37,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:21:22" (1/3) ... [2020-10-26 21:21:37,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e89eb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:21:37, skipping insertion in model container [2020-10-26 21:21:37,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:21:26" (2/3) ... [2020-10-26 21:21:37,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e89eb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:21:37, skipping insertion in model container [2020-10-26 21:21:37,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:21:37" (3/3) ... [2020-10-26 21:21:37,015 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46.c [2020-10-26 21:21:37,027 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:21:37,033 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:21:37,047 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:21:37,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:21:37,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:21:37,086 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:21:37,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:21:37,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:21:37,086 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:21:37,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:21:37,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:21:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-26 21:21:37,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2020-10-26 21:21:37,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:21:37,283 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:37,284 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:21:37,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:21:37,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1857665487, now seen corresponding path program 1 times [2020-10-26 21:21:37,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:21:37,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541259566] [2020-10-26 21:21:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:21:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:21:39,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:21:43,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:21:43,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1735 [2020-10-26 21:21:43,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:21:43,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-26 21:21:43,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:21:43,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 21:21:43,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:21:43,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1726 [2020-10-26 21:21:43,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 21:21:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:21:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:21:45,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:21:45,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:21:45,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:21:45,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:21:45,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:21:45,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:21:45,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:21:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:21:45,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:21:45,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:21:48,439 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 21:21:48,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541259566] [2020-10-26 21:21:48,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:21:48,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 21:21:48,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043997541] [2020-10-26 21:21:48,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 21:21:48,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:21:48,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 21:21:48,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:21:48,469 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 5 states. [2020-10-26 21:22:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:22:13,179 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-26 21:22:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:22:13,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1711 [2020-10-26 21:22:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:22:13,252 INFO L225 Difference]: With dead ends: 6315 [2020-10-26 21:22:13,252 INFO L226 Difference]: Without dead ends: 4025 [2020-10-26 21:22:13,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:22:13,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-26 21:22:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-26 21:22:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-26 21:22:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-26 21:22:13,538 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1711 [2020-10-26 21:22:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:22:13,543 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-26 21:22:13,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 21:22:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-26 21:22:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1721 [2020-10-26 21:22:13,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:22:13,818 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:13,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:22:13,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:22:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:22:13,820 INFO L82 PathProgramCache]: Analyzing trace with hash 695879861, now seen corresponding path program 1 times [2020-10-26 21:22:13,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:22:13,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907108269] [2020-10-26 21:22:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:22:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:14,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:16,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:19,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:22:19,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1746 [2020-10-26 21:22:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:22:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5155 [2020-10-26 21:22:19,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:22:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:22:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:22:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 21:22:19,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:22:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:22:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:20,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:20,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:22:20,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:22:20,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:22:20,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:22:20,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:22:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:22:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:22:20,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:22:20,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:22:20,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:22:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:20,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:20,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:22:20,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:22:20,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:22:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-26 21:22:20,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:22:20,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:22:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:22:20,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:22:20,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:22:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:22:21,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907108269] [2020-10-26 21:22:21,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:22:21,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:22:21,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143598124] [2020-10-26 21:22:21,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:22:21,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:22:21,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:22:21,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:22:21,767 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 7 states. [2020-10-26 21:22:21,921 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-26 21:22:52,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:22:52,818 INFO L93 Difference]: Finished difference Result 11930 states and 19289 transitions. [2020-10-26 21:22:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:22:52,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1720 [2020-10-26 21:22:52,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:22:52,863 INFO L225 Difference]: With dead ends: 11930 [2020-10-26 21:22:52,863 INFO L226 Difference]: Without dead ends: 7938 [2020-10-26 21:22:52,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:22:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2020-10-26 21:22:53,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 7745. [2020-10-26 21:22:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7745 states. [2020-10-26 21:22:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 11187 transitions. [2020-10-26 21:22:53,107 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 11187 transitions. Word has length 1720 [2020-10-26 21:22:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:22:53,107 INFO L481 AbstractCegarLoop]: Abstraction has 7745 states and 11187 transitions. [2020-10-26 21:22:53,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:22:53,108 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 11187 transitions. [2020-10-26 21:22:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2020-10-26 21:22:53,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:22:53,172 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:22:53,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:22:53,173 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:22:53,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:22:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash -418151879, now seen corresponding path program 1 times [2020-10-26 21:22:53,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:22:53,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639563771] [2020-10-26 21:22:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:22:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:54,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:58,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:22:58,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1748 [2020-10-26 21:22:58,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:22:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 21:22:58,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:22:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:22:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:22:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:22:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:22:59,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:22:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:59,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:59,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:22:59,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:22:59,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:22:59,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:22:59,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:22:59,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:22:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:22:59,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:22:59,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:22:59,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:22:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:22:59,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:22:59,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:22:59,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:22:59,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:22:59,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:22:59,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:22:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:22:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:22:59,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:22:59,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:23:00,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639563771] [2020-10-26 21:23:00,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:23:00,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:23:00,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414684607] [2020-10-26 21:23:00,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:23:00,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:23:00,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:23:00,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:23:00,876 INFO L87 Difference]: Start difference. First operand 7745 states and 11187 transitions. Second operand 7 states. [2020-10-26 21:23:31,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:23:31,590 INFO L93 Difference]: Finished difference Result 23218 states and 34235 transitions. [2020-10-26 21:23:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:23:31,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1722 [2020-10-26 21:23:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:23:31,679 INFO L225 Difference]: With dead ends: 23218 [2020-10-26 21:23:31,679 INFO L226 Difference]: Without dead ends: 15479 [2020-10-26 21:23:31,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:23:31,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15479 states. [2020-10-26 21:23:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15479 to 15254. [2020-10-26 21:23:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15254 states. [2020-10-26 21:23:32,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15254 states to 15254 states and 20619 transitions. [2020-10-26 21:23:32,154 INFO L78 Accepts]: Start accepts. Automaton has 15254 states and 20619 transitions. Word has length 1722 [2020-10-26 21:23:32,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:23:32,157 INFO L481 AbstractCegarLoop]: Abstraction has 15254 states and 20619 transitions. [2020-10-26 21:23:32,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:23:32,158 INFO L276 IsEmpty]: Start isEmpty. Operand 15254 states and 20619 transitions. [2020-10-26 21:23:32,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1734 [2020-10-26 21:23:32,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:23:32,233 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:23:32,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:23:32,233 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:23:32,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:23:32,235 INFO L82 PathProgramCache]: Analyzing trace with hash -278694512, now seen corresponding path program 1 times [2020-10-26 21:23:32,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:23:32,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622388575] [2020-10-26 21:23:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:23:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:23:32,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:35,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:37,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:23:37,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1759 [2020-10-26 21:23:37,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:23:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-26 21:23:37,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:23:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:23:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:23:37,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 21:23:37,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:38,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:23:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:23:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:38,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:23:38,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:23:38,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:23:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:23:38,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:23:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:23:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:23:38,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:23:38,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:38,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:23:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:23:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:23:38,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:23:38,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:23:38,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:23:38,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-26 21:23:38,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:23:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:23:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:23:38,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:23:38,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:23:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:23:39,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622388575] [2020-10-26 21:23:39,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:23:39,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:23:39,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399944715] [2020-10-26 21:23:39,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:23:39,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:23:39,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:23:39,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:23:39,819 INFO L87 Difference]: Start difference. First operand 15254 states and 20619 transitions. Second operand 7 states. [2020-10-26 21:24:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:24:08,443 INFO L93 Difference]: Finished difference Result 39478 states and 55196 transitions. [2020-10-26 21:24:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 21:24:08,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1733 [2020-10-26 21:24:08,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:24:08,544 INFO L225 Difference]: With dead ends: 39478 [2020-10-26 21:24:08,544 INFO L226 Difference]: Without dead ends: 24230 [2020-10-26 21:24:08,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:24:08,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24230 states. [2020-10-26 21:24:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24230 to 23185. [2020-10-26 21:24:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23185 states. [2020-10-26 21:24:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23185 states to 23185 states and 29824 transitions. [2020-10-26 21:24:09,314 INFO L78 Accepts]: Start accepts. Automaton has 23185 states and 29824 transitions. Word has length 1733 [2020-10-26 21:24:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:24:09,315 INFO L481 AbstractCegarLoop]: Abstraction has 23185 states and 29824 transitions. [2020-10-26 21:24:09,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:24:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 23185 states and 29824 transitions. [2020-10-26 21:24:09,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1840 [2020-10-26 21:24:09,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:24:09,423 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:09,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:24:09,424 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:24:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:24:09,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2131702213, now seen corresponding path program 1 times [2020-10-26 21:24:09,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:24:09,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322996414] [2020-10-26 21:24:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:24:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:09,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:11,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:14,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:14,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1867 [2020-10-26 21:24:14,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:24:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5250 [2020-10-26 21:24:14,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:24:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:24:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 21:24:14,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:24:15,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:24:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:15,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:15,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:24:15,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:24:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:24:15,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:24:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:24:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:24:15,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:24:15,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:24:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:15,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:15,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:15,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:24:15,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:24:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-26 21:24:15,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:24:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:24:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 21:24:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:24:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 21:24:15,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:15,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:15,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:24:15,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:24:15,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:24:15,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 21:24:15,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:24:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:24:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:24:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:24:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:24:17,362 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 21:24:17,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322996414] [2020-10-26 21:24:17,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:24:17,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 21:24:17,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882397053] [2020-10-26 21:24:17,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:24:17,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:24:17,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:24:17,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:24:17,367 INFO L87 Difference]: Start difference. First operand 23185 states and 29824 transitions. Second operand 7 states. [2020-10-26 21:24:49,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:24:49,587 INFO L93 Difference]: Finished difference Result 67489 states and 92213 transitions. [2020-10-26 21:24:49,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:24:49,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1839 [2020-10-26 21:24:49,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:24:49,748 INFO L225 Difference]: With dead ends: 67489 [2020-10-26 21:24:49,748 INFO L226 Difference]: Without dead ends: 44310 [2020-10-26 21:24:49,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:24:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44310 states. [2020-10-26 21:24:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44310 to 44044. [2020-10-26 21:24:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44044 states. [2020-10-26 21:24:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44044 states to 44044 states and 56514 transitions. [2020-10-26 21:24:50,958 INFO L78 Accepts]: Start accepts. Automaton has 44044 states and 56514 transitions. Word has length 1839 [2020-10-26 21:24:50,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:24:50,959 INFO L481 AbstractCegarLoop]: Abstraction has 44044 states and 56514 transitions. [2020-10-26 21:24:50,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:24:50,959 INFO L276 IsEmpty]: Start isEmpty. Operand 44044 states and 56514 transitions. [2020-10-26 21:24:51,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1847 [2020-10-26 21:24:51,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:24:51,388 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:51,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:24:51,392 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:24:51,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:24:51,396 INFO L82 PathProgramCache]: Analyzing trace with hash 3024266, now seen corresponding path program 1 times [2020-10-26 21:24:51,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:24:51,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688068042] [2020-10-26 21:24:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:24:52,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:24:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:52,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:24:54,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking...