/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=DEEPEST --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/Problem17_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:59:23,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:59:23,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:59:24,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:59:24,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:59:24,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:59:24,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:59:24,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:59:24,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:59:24,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:59:24,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:59:24,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:59:24,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:59:24,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:59:24,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:59:24,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:59:24,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:59:24,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:59:24,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:59:24,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:59:24,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:59:24,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:59:24,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:59:24,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:59:24,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:59:24,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:59:24,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:59:24,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:59:24,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:59:24,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:59:24,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:59:24,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:59:24,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:59:24,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:59:24,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:59:24,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:59:24,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:59:24,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:59:24,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:59:24,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:59:24,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:59:24,180 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 [2020-10-27 18:59:24,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:59:24,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:59:24,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:59:24,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:59:24,245 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:59:24,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:59:24,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:59:24,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:59:24,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:59:24,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:59:24,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:59:24,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:59:24,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:59:24,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:59:24,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:59:24,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:59:24,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:59:24,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:59:24,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:59:24,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:59:24,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:59:24,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:59:24,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:59:24,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:59:24,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:59:24,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:59:24,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:59:24,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:59:24,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:59:24,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:59:24,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:59:24,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:59:24,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:59:24,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:59:24,745 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:59:24,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45.c [2020-10-27 18:59:24,838 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a60944119/20a3ebc68d2a4729ab99189aa484ef7b/FLAGa9bb3649f [2020-10-27 18:59:25,873 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:59:25,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label45.c [2020-10-27 18:59:25,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a60944119/20a3ebc68d2a4729ab99189aa484ef7b/FLAGa9bb3649f [2020-10-27 18:59:26,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a60944119/20a3ebc68d2a4729ab99189aa484ef7b [2020-10-27 18:59:26,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:59:26,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:59:26,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:59:26,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:59:26,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:59:26,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:59:26" (1/1) ... [2020-10-27 18:59:26,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b84106f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:26, skipping insertion in model container [2020-10-27 18:59:26,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:59:26" (1/1) ... [2020-10-27 18:59:26,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:59:26,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:59:27,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:59:27,758 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:59:28,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:59:28,341 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:59:28,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28 WrapperNode [2020-10-27 18:59:28,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:59:28,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:59:28,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:59:28,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:59:28,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28" (1/1) ... [2020-10-27 18:59:28,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28" (1/1) ... [2020-10-27 18:59:28,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28" (1/1) ... [2020-10-27 18:59:28,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28" (1/1) ... [2020-10-27 18:59:28,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28" (1/1) ... [2020-10-27 18:59:28,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28" (1/1) ... [2020-10-27 18:59:28,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28" (1/1) ... [2020-10-27 18:59:28,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:59:28,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:59:28,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:59:28,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:59:28,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28" (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 [2020-10-27 18:59:28,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:59:28,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:59:28,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:59:28,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:59:28,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:59:28,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:59:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:59:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:59:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:59:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:59:28,905 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:59:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:59:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:59:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:59:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:59:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:59:28,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:59:28,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:59:28,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:59:28,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:59:28,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:59:39,208 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:59:39,208 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:59:39,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:59:39 BoogieIcfgContainer [2020-10-27 18:59:39,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:59:39,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:59:39,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:59:39,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:59:39,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:59:26" (1/3) ... [2020-10-27 18:59:39,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672b7d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:59:39, skipping insertion in model container [2020-10-27 18:59:39,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:59:28" (2/3) ... [2020-10-27 18:59:39,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@672b7d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:59:39, skipping insertion in model container [2020-10-27 18:59:39,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:59:39" (3/3) ... [2020-10-27 18:59:39,225 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label45.c [2020-10-27 18:59:39,243 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:59:39,251 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:59:39,270 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:59:39,314 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:59:39,314 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:59:39,315 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:59:39,315 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:59:39,315 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:59:39,315 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:59:39,315 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:59:39,315 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:59:39,356 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-27 18:59:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 18:59:39,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:59:39,369 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] [2020-10-27 18:59:39,369 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:59:39,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:59:39,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1049082253, now seen corresponding path program 1 times [2020-10-27 18:59:39,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:59:39,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59520635] [2020-10-27 18:59:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:59:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:40,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:40,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 18:59:40,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:59:40,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-27 18:59:40,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:59:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:59:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 18:59:40,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:59:40,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:59:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:59:40,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:59:40,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:59:40,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:59:40,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:59:40,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 18:59:40,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:59:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:59:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:59:40,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:59:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:59:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:59:40,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59520635] [2020-10-27 18:59:40,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:59:40,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 18:59:40,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51066310] [2020-10-27 18:59:40,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:59:40,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:59:40,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:59:40,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:59:40,867 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 5 states. [2020-10-27 19:00:00,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:00:00,159 INFO L93 Difference]: Finished difference Result 2207 states and 4069 transitions. [2020-10-27 19:00:00,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:00:00,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-27 19:00:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:00:00,190 INFO L225 Difference]: With dead ends: 2207 [2020-10-27 19:00:00,190 INFO L226 Difference]: Without dead ends: 1502 [2020-10-27 19:00:00,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:00:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-10-27 19:00:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1467. [2020-10-27 19:00:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2020-10-27 19:00:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2358 transitions. [2020-10-27 19:00:00,392 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2358 transitions. Word has length 57 [2020-10-27 19:00:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:00:00,395 INFO L481 AbstractCegarLoop]: Abstraction has 1467 states and 2358 transitions. [2020-10-27 19:00:00,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:00:00,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2358 transitions. [2020-10-27 19:00:00,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 19:00:00,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:00:00,415 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:00:00,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:00:00,415 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:00:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:00:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1255911102, now seen corresponding path program 1 times [2020-10-27 19:00:00,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:00:00,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991596801] [2020-10-27 19:00:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:00:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:02,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:02,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 19:00:02,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:00:02,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-10-27 19:00:02,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:02,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:00:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 19:00:02,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:00:02,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:00:02,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:00:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:02,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:02,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:00:02,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:02,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:00:02,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:00:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:02,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:00:02,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:02,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:00:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:02,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:02,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:02,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 19:00:02,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 19:00:02,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:00:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:02,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 19:00:02,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:00:02,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991596801] [2020-10-27 19:00:02,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:00:02,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:00:02,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192483712] [2020-10-27 19:00:02,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:00:02,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:00:02,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:00:02,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:00:02,541 INFO L87 Difference]: Start difference. First operand 1467 states and 2358 transitions. Second operand 5 states. [2020-10-27 19:00:14,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:00:14,582 INFO L93 Difference]: Finished difference Result 4272 states and 6949 transitions. [2020-10-27 19:00:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:00:14,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 19:00:14,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:00:14,603 INFO L225 Difference]: With dead ends: 4272 [2020-10-27 19:00:14,603 INFO L226 Difference]: Without dead ends: 2811 [2020-10-27 19:00:14,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:00:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2020-10-27 19:00:14,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2799. [2020-10-27 19:00:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2020-10-27 19:00:14,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4168 transitions. [2020-10-27 19:00:14,706 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4168 transitions. Word has length 139 [2020-10-27 19:00:14,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:00:14,707 INFO L481 AbstractCegarLoop]: Abstraction has 2799 states and 4168 transitions. [2020-10-27 19:00:14,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:00:14,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4168 transitions. [2020-10-27 19:00:14,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 19:00:14,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:00:14,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:00:14,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:00:14,711 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:00:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:00:14,712 INFO L82 PathProgramCache]: Analyzing trace with hash 272714050, now seen corresponding path program 1 times [2020-10-27 19:00:14,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:00:14,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912811191] [2020-10-27 19:00:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:00:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:14,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:15,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:15,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:16,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:16,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 19:00:16,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:00:16,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1504 [2020-10-27 19:00:16,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:16,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:00:16,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-27 19:00:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 19:00:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:16,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:00:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:16,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:16,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:00:16,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:16,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:00:16,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:16,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:00:16,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:16,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:00:16,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:16,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:00:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:16,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:16,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 19:00:16,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 19:00:16,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:00:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:16,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 19:00:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:16,912 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:00:16,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912811191] [2020-10-27 19:00:16,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:00:16,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:00:16,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528162785] [2020-10-27 19:00:16,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:00:16,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:00:16,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:00:16,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:00:16,918 INFO L87 Difference]: Start difference. First operand 2799 states and 4168 transitions. Second operand 5 states. [2020-10-27 19:00:19,730 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-27 19:00:27,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:00:27,612 INFO L93 Difference]: Finished difference Result 4759 states and 7219 transitions. [2020-10-27 19:00:27,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:00:27,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-27 19:00:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:00:27,644 INFO L225 Difference]: With dead ends: 4759 [2020-10-27 19:00:27,645 INFO L226 Difference]: Without dead ends: 2811 [2020-10-27 19:00:27,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:00:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2020-10-27 19:00:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2799. [2020-10-27 19:00:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2020-10-27 19:00:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4165 transitions. [2020-10-27 19:00:27,754 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4165 transitions. Word has length 141 [2020-10-27 19:00:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:00:27,756 INFO L481 AbstractCegarLoop]: Abstraction has 2799 states and 4165 transitions. [2020-10-27 19:00:27,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:00:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4165 transitions. [2020-10-27 19:00:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 19:00:27,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:00:27,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:00:27,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:00:27,760 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:00:27,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:00:27,763 INFO L82 PathProgramCache]: Analyzing trace with hash -36917010, now seen corresponding path program 1 times [2020-10-27 19:00:27,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:00:27,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511271848] [2020-10-27 19:00:27,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:00:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:28,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:28,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 19:00:28,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:00:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-10-27 19:00:28,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:00:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 19:00:28,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:00:28,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:28,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:00:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:28,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:28,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:00:28,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:00:28,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:00:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:00:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:28,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:00:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:29,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:29,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:29,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 19:00:29,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:29,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-27 19:00:29,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:29,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:00:29,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:29,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 19:00:29,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:00:29,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511271848] [2020-10-27 19:00:29,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:00:29,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:00:29,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072287798] [2020-10-27 19:00:29,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:00:29,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:00:29,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:00:29,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:00:29,169 INFO L87 Difference]: Start difference. First operand 2799 states and 4165 transitions. Second operand 5 states. [2020-10-27 19:00:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:00:43,589 INFO L93 Difference]: Finished difference Result 8237 states and 12449 transitions. [2020-10-27 19:00:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:00:43,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-27 19:00:43,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:00:43,631 INFO L225 Difference]: With dead ends: 8237 [2020-10-27 19:00:43,631 INFO L226 Difference]: Without dead ends: 5444 [2020-10-27 19:00:43,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:00:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5444 states. [2020-10-27 19:00:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5444 to 5434. [2020-10-27 19:00:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5434 states. [2020-10-27 19:00:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 7360 transitions. [2020-10-27 19:00:43,828 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 7360 transitions. Word has length 142 [2020-10-27 19:00:43,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:00:43,829 INFO L481 AbstractCegarLoop]: Abstraction has 5434 states and 7360 transitions. [2020-10-27 19:00:43,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:00:43,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 7360 transitions. [2020-10-27 19:00:43,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 19:00:43,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:00:43,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:00:43,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:00:43,833 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:00:43,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:00:43,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1728025542, now seen corresponding path program 1 times [2020-10-27 19:00:43,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:00:43,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568693215] [2020-10-27 19:00:43,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:00:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:43,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:44,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:45,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:48,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:48,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 19:00:48,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:00:48,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4890 [2020-10-27 19:00:48,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:48,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:00:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-27 19:00:48,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:00:48,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:00:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:00:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:48,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:48,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:00:48,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:48,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:00:48,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:00:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:00:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:00:48,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:00:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:00:49,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:00:49,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:00:49,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 19:00:49,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:00:49,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-27 19:00:49,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:00:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:00:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:00:49,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 19:00:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:00:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:00:49,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568693215] [2020-10-27 19:00:49,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:00:49,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:00:49,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491024826] [2020-10-27 19:00:49,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:00:49,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:00:49,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:00:49,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:00:49,262 INFO L87 Difference]: Start difference. First operand 5434 states and 7360 transitions. Second operand 5 states. [2020-10-27 19:01:04,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:01:04,198 INFO L93 Difference]: Finished difference Result 9537 states and 13397 transitions. [2020-10-27 19:01:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:01:04,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-27 19:01:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:01:04,239 INFO L225 Difference]: With dead ends: 9537 [2020-10-27 19:01:04,239 INFO L226 Difference]: Without dead ends: 5877 [2020-10-27 19:01:04,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:01:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5877 states. [2020-10-27 19:01:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5877 to 5436. [2020-10-27 19:01:04,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5436 states. [2020-10-27 19:01:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5436 states to 5436 states and 7373 transitions. [2020-10-27 19:01:04,430 INFO L78 Accepts]: Start accepts. Automaton has 5436 states and 7373 transitions. Word has length 143 [2020-10-27 19:01:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:01:04,430 INFO L481 AbstractCegarLoop]: Abstraction has 5436 states and 7373 transitions. [2020-10-27 19:01:04,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:01:04,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5436 states and 7373 transitions. [2020-10-27 19:01:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 19:01:04,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:01:04,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:01:04,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:01:04,435 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:01:04,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:01:04,435 INFO L82 PathProgramCache]: Analyzing trace with hash 634796238, now seen corresponding path program 1 times [2020-10-27 19:01:04,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:01:04,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65170615] [2020-10-27 19:01:04,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:01:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:06,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:06,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-27 19:01:06,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:01:06,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-27 19:01:06,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:01:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 19:01:06,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:01:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:06,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:01:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:06,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:06,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:01:06,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:01:06,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:01:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:01:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:01:06,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:01:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:06,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:06,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 19:01:06,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:06,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 19:01:06,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:06,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:01:06,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:06,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-27 19:01:06,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:01:06,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65170615] [2020-10-27 19:01:06,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:01:06,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:01:06,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860475848] [2020-10-27 19:01:06,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:01:06,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:01:06,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:01:06,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:01:06,549 INFO L87 Difference]: Start difference. First operand 5436 states and 7373 transitions. Second operand 5 states. [2020-10-27 19:01:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:01:25,735 INFO L93 Difference]: Finished difference Result 10858 states and 15415 transitions. [2020-10-27 19:01:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:01:25,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 19:01:25,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:01:25,771 INFO L225 Difference]: With dead ends: 10858 [2020-10-27 19:01:25,772 INFO L226 Difference]: Without dead ends: 7195 [2020-10-27 19:01:25,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:01:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2020-10-27 19:01:25,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 7184. [2020-10-27 19:01:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7184 states. [2020-10-27 19:01:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 9646 transitions. [2020-10-27 19:01:25,984 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 9646 transitions. Word has length 147 [2020-10-27 19:01:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:01:25,984 INFO L481 AbstractCegarLoop]: Abstraction has 7184 states and 9646 transitions. [2020-10-27 19:01:25,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:01:25,985 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 9646 transitions. [2020-10-27 19:01:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 19:01:25,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:01:25,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:01:25,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:01:25,989 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:01:25,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:01:25,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1746309970, now seen corresponding path program 1 times [2020-10-27 19:01:25,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:01:25,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866645704] [2020-10-27 19:01:25,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:01:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:26,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:26,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 19:01:26,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:01:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-10-27 19:01:26,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:01:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 19:01:26,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:01:26,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:27,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:01:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:27,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:27,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:01:27,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:27,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:01:27,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:01:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:27,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:01:27,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:01:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:27,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:27,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-27 19:01:27,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:27,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 19:01:27,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:27,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:01:27,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:27,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 19:01:27,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:01:27,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866645704] [2020-10-27 19:01:27,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:01:27,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:01:27,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271339078] [2020-10-27 19:01:27,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:01:27,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:01:27,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:01:27,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:01:27,318 INFO L87 Difference]: Start difference. First operand 7184 states and 9646 transitions. Second operand 5 states. [2020-10-27 19:01:47,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:01:47,299 INFO L93 Difference]: Finished difference Result 17428 states and 24264 transitions. [2020-10-27 19:01:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:01:47,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 19:01:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:01:47,361 INFO L225 Difference]: With dead ends: 17428 [2020-10-27 19:01:47,361 INFO L226 Difference]: Without dead ends: 12016 [2020-10-27 19:01:47,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:01:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2020-10-27 19:01:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 12005. [2020-10-27 19:01:47,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12005 states. [2020-10-27 19:01:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12005 states to 12005 states and 15338 transitions. [2020-10-27 19:01:47,705 INFO L78 Accepts]: Start accepts. Automaton has 12005 states and 15338 transitions. Word has length 149 [2020-10-27 19:01:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:01:47,706 INFO L481 AbstractCegarLoop]: Abstraction has 12005 states and 15338 transitions. [2020-10-27 19:01:47,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:01:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 12005 states and 15338 transitions. [2020-10-27 19:01:47,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 19:01:47,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:01:47,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:01:47,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:01:47,712 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:01:47,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:01:47,713 INFO L82 PathProgramCache]: Analyzing trace with hash 529332934, now seen corresponding path program 1 times [2020-10-27 19:01:47,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:01:47,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508642751] [2020-10-27 19:01:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:01:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:48,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:48,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:48,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 19:01:48,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:01:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 997 [2020-10-27 19:01:48,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:01:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 19:01:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:01:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:01:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:48,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:48,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:48,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:01:48,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:48,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:01:48,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:01:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:48,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:01:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:48,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:01:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:01:49,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:01:49,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:01:49,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 19:01:49,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:01:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 19:01:49,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:01:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:01:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:01:49,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 19:01:49,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:01:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:01:49,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508642751] [2020-10-27 19:01:49,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:01:49,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:01:49,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023431175] [2020-10-27 19:01:49,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:01:49,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:01:49,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:01:49,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:01:49,170 INFO L87 Difference]: Start difference. First operand 12005 states and 15338 transitions. Second operand 5 states. [2020-10-27 19:01:52,414 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 19:02:07,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:02:07,072 INFO L93 Difference]: Finished difference Result 26202 states and 34418 transitions. [2020-10-27 19:02:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:02:07,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 19:02:07,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:02:07,143 INFO L225 Difference]: With dead ends: 26202 [2020-10-27 19:02:07,143 INFO L226 Difference]: Without dead ends: 15972 [2020-10-27 19:02:07,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:02:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15972 states. [2020-10-27 19:02:07,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15972 to 15960. [2020-10-27 19:02:07,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15960 states. [2020-10-27 19:02:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15960 states to 15960 states and 19983 transitions. [2020-10-27 19:02:07,604 INFO L78 Accepts]: Start accepts. Automaton has 15960 states and 19983 transitions. Word has length 154 [2020-10-27 19:02:07,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:02:07,605 INFO L481 AbstractCegarLoop]: Abstraction has 15960 states and 19983 transitions. [2020-10-27 19:02:07,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:02:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 15960 states and 19983 transitions. [2020-10-27 19:02:07,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-27 19:02:07,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:02:07,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:02:07,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:02:07,613 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:02:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:02:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1660981425, now seen corresponding path program 1 times [2020-10-27 19:02:07,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:02:07,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169302076] [2020-10-27 19:02:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:02:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:07,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:07,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:09,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:09,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-27 19:02:09,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:02:09,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1233 [2020-10-27 19:02:09,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:02:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-27 19:02:09,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:02:09,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:09,175 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:02:09,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:02:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:09,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:09,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:02:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:02:09,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:02:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:02:09,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:09,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:02:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:09,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:09,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:09,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 19:02:09,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:09,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-27 19:02:09,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:02:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 19:02:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:02:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:02:09,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169302076] [2020-10-27 19:02:09,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:02:09,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 19:02:09,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020935560] [2020-10-27 19:02:09,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:02:09,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:02:09,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:02:09,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:02:09,581 INFO L87 Difference]: Start difference. First operand 15960 states and 19983 transitions. Second operand 5 states. [2020-10-27 19:02:10,363 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-27 19:02:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:02:33,065 INFO L93 Difference]: Finished difference Result 38465 states and 49539 transitions. [2020-10-27 19:02:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:02:33,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 177 [2020-10-27 19:02:33,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:02:33,154 INFO L225 Difference]: With dead ends: 38465 [2020-10-27 19:02:33,155 INFO L226 Difference]: Without dead ends: 22511 [2020-10-27 19:02:33,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:02:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22511 states. [2020-10-27 19:02:33,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22511 to 22070. [2020-10-27 19:02:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22070 states. [2020-10-27 19:02:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22070 states to 22070 states and 27150 transitions. [2020-10-27 19:02:33,704 INFO L78 Accepts]: Start accepts. Automaton has 22070 states and 27150 transitions. Word has length 177 [2020-10-27 19:02:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:02:33,705 INFO L481 AbstractCegarLoop]: Abstraction has 22070 states and 27150 transitions. [2020-10-27 19:02:33,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:02:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 22070 states and 27150 transitions. [2020-10-27 19:02:33,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-27 19:02:33,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:02:33,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:02:33,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:02:33,718 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:02:33,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:02:33,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2124479219, now seen corresponding path program 1 times [2020-10-27 19:02:33,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:02:33,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012400502] [2020-10-27 19:02:33,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:02:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:33,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:35,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:36,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:36,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-27 19:02:36,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:02:36,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2367 [2020-10-27 19:02:36,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:02:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-27 19:02:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:02:36,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:36,378 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:02:36,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:02:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:36,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:36,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:36,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:02:36,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:36,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:02:36,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:02:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:02:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:02:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:02:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:02:36,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:02:36,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 19:02:36,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:02:36,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-27 19:02:36,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:02:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:02:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:02:36,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 19:02:36,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:02:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:02:36,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012400502] [2020-10-27 19:02:36,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:02:36,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:02:36,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944685173] [2020-10-27 19:02:36,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:02:36,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:02:36,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:02:36,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:02:36,794 INFO L87 Difference]: Start difference. First operand 22070 states and 27150 transitions. Second operand 5 states. [2020-10-27 19:02:41,317 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 19:03:01,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:03:01,692 INFO L93 Difference]: Finished difference Result 45454 states and 56562 transitions. [2020-10-27 19:03:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:03:01,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 198 [2020-10-27 19:03:01,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:03:01,808 INFO L225 Difference]: With dead ends: 45454 [2020-10-27 19:03:01,809 INFO L226 Difference]: Without dead ends: 26028 [2020-10-27 19:03:01,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:03:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26028 states. [2020-10-27 19:03:02,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26028 to 26003. [2020-10-27 19:03:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26003 states. [2020-10-27 19:03:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26003 states to 26003 states and 31937 transitions. [2020-10-27 19:03:02,589 INFO L78 Accepts]: Start accepts. Automaton has 26003 states and 31937 transitions. Word has length 198 [2020-10-27 19:03:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:03:02,590 INFO L481 AbstractCegarLoop]: Abstraction has 26003 states and 31937 transitions. [2020-10-27 19:03:02,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:03:02,590 INFO L276 IsEmpty]: Start isEmpty. Operand 26003 states and 31937 transitions. [2020-10-27 19:03:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-27 19:03:02,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:03:02,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:03:02,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:03:02,607 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:03:02,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:03:02,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1358642945, now seen corresponding path program 1 times [2020-10-27 19:03:02,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:03:02,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386568897] [2020-10-27 19:03:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:03:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:02,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:03,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:07,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:07,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:07,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-27 19:03:07,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 19:03:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 19:03:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:03:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-27 19:03:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:03:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:07,908 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 19:03:07,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:03:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:07,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:07,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:07,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:03:07,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:03:07,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:03:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:03:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:07,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:03:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:07,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:08,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:08,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:03:08,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:03:08,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:03:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:03:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:08,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 19:03:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:03:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:03:08,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:03:08,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 19:03:08,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:03:08,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 19:03:08,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:03:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:03:08,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:03:08,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 19:03:08,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:03:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 19:03:08,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386568897] [2020-10-27 19:03:08,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:03:08,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:03:08,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366876726] [2020-10-27 19:03:08,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:03:08,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:03:08,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:03:08,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:03:08,229 INFO L87 Difference]: Start difference. First operand 26003 states and 31937 transitions. Second operand 5 states. [2020-10-27 19:03:08,434 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 66