/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 15:13:49,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 15:13:49,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 15:13:49,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 15:13:49,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 15:13:49,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 15:13:49,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 15:13:49,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 15:13:49,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 15:13:49,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 15:13:49,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 15:13:49,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 15:13:49,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 15:13:49,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 15:13:49,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 15:13:49,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 15:13:49,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 15:13:49,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 15:13:49,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 15:13:49,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 15:13:49,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 15:13:49,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 15:13:49,139 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 15:13:49,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 15:13:49,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 15:13:49,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 15:13:49,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 15:13:49,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 15:13:49,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 15:13:49,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 15:13:49,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 15:13:49,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 15:13:49,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 15:13:49,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 15:13:49,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 15:13:49,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 15:13:49,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 15:13:49,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 15:13:49,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 15:13:49,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 15:13:49,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 15:13:49,180 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 [2020-10-28 15:13:49,234 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 15:13:49,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 15:13:49,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 15:13:49,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 15:13:49,240 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 15:13:49,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 15:13:49,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 15:13:49,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 15:13:49,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 15:13:49,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 15:13:49,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 15:13:49,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 15:13:49,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 15:13:49,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 15:13:49,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 15:13:49,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 15:13:49,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 15:13:49,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 15:13:49,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 15:13:49,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 15:13:49,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 15:13:49,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:13:49,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 15:13:49,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 15:13:49,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 15:13:49,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 15:13:49,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 15:13:49,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 15:13:49,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 15:13:49,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 15:13:49,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 15:13:49,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 15:13:49,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 15:13:49,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 15:13:49,711 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 15:13:49,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c [2020-10-28 15:13:49,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cfc403c1/84deb93226e745dd863a8a32da0f93cf/FLAG6b7ad9ddc [2020-10-28 15:13:50,500 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 15:13:50,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested_delay_nd.c [2020-10-28 15:13:50,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cfc403c1/84deb93226e745dd863a8a32da0f93cf/FLAG6b7ad9ddc [2020-10-28 15:13:50,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6cfc403c1/84deb93226e745dd863a8a32da0f93cf [2020-10-28 15:13:50,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 15:13:50,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 15:13:50,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 15:13:50,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 15:13:50,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 15:13:50,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:13:50" (1/1) ... [2020-10-28 15:13:50,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fec487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:50, skipping insertion in model container [2020-10-28 15:13:50,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 03:13:50" (1/1) ... [2020-10-28 15:13:50,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 15:13:50,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 15:13:51,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:13:51,064 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 15:13:51,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 15:13:51,101 INFO L208 MainTranslator]: Completed translation [2020-10-28 15:13:51,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51 WrapperNode [2020-10-28 15:13:51,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 15:13:51,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 15:13:51,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 15:13:51,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 15:13:51,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51" (1/1) ... [2020-10-28 15:13:51,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51" (1/1) ... [2020-10-28 15:13:51,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51" (1/1) ... [2020-10-28 15:13:51,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51" (1/1) ... [2020-10-28 15:13:51,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51" (1/1) ... [2020-10-28 15:13:51,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51" (1/1) ... [2020-10-28 15:13:51,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51" (1/1) ... [2020-10-28 15:13:51,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 15:13:51,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 15:13:51,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 15:13:51,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 15:13:51,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 15:13:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 15:13:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 15:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 15:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 15:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 15:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 15:13:51,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 15:13:51,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 15:13:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 15:13:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 15:13:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 15:13:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 15:13:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 15:13:51,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 15:13:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 15:13:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 15:13:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 15:13:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 15:13:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 15:13:51,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 15:13:51,490 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 15:13:51,490 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 15:13:51,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:13:51 BoogieIcfgContainer [2020-10-28 15:13:51,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 15:13:51,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 15:13:51,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 15:13:51,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 15:13:51,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 03:13:50" (1/3) ... [2020-10-28 15:13:51,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f4fcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:13:51, skipping insertion in model container [2020-10-28 15:13:51,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 03:13:51" (2/3) ... [2020-10-28 15:13:51,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f4fcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 03:13:51, skipping insertion in model container [2020-10-28 15:13:51,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 03:13:51" (3/3) ... [2020-10-28 15:13:51,502 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_delay_nd.c [2020-10-28 15:13:51,516 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 15:13:51,521 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 15:13:51,572 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 15:13:51,635 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 15:13:51,635 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 15:13:51,636 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 15:13:51,636 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 15:13:51,636 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 15:13:51,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 15:13:51,636 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 15:13:51,637 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 15:13:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-28 15:13:51,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 15:13:51,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:51,677 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] [2020-10-28 15:13:51,677 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:51,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:51,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1391196817, now seen corresponding path program 1 times [2020-10-28 15:13:51,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:51,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288000752] [2020-10-28 15:13:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:52,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:52,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:52,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 15:13:52,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:13:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-28 15:13:52,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:52,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:52,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 15:13:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 15:13:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:52,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:52,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:52,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:13:52,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:52,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:13:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:52,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:52,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:52,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:13:52,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:52,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:13:52,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:52,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 15:13:52,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:52,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:52,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288000752] [2020-10-28 15:13:52,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:13:52,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 15:13:52,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950378191] [2020-10-28 15:13:52,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 15:13:52,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 15:13:53,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:13:53,010 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-28 15:13:53,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:53,143 INFO L93 Difference]: Finished difference Result 55 states and 77 transitions. [2020-10-28 15:13:53,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 15:13:53,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-28 15:13:53,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:53,153 INFO L225 Difference]: With dead ends: 55 [2020-10-28 15:13:53,153 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 15:13:53,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 15:13:53,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 15:13:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 15:13:53,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 15:13:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-28 15:13:53,197 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2020-10-28 15:13:53,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:53,198 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-28 15:13:53,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 15:13:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-28 15:13:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 15:13:53,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:53,199 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] [2020-10-28 15:13:53,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 15:13:53,200 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:53,201 INFO L82 PathProgramCache]: Analyzing trace with hash 299815842, now seen corresponding path program 1 times [2020-10-28 15:13:53,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:53,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895644537] [2020-10-28 15:13:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:53,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 15:13:53,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 15:13:53,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-28 15:13:53,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:53,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:53,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:13:53,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:13:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 15:13:53,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:53,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:53,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:53,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:53,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 15:13:53,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:53,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:13:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:53,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:13:53,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:13:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:53,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:13:53,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:13:53,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:53,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:13:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:13:53,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:53,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895644537] [2020-10-28 15:13:53,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:13:53,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:13:53,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370556018] [2020-10-28 15:13:53,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:13:53,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:53,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:13:53,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:13:53,636 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 5 states. [2020-10-28 15:13:53,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:53,828 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2020-10-28 15:13:53,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:13:53,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 15:13:53,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:53,831 INFO L225 Difference]: With dead ends: 53 [2020-10-28 15:13:53,831 INFO L226 Difference]: Without dead ends: 37 [2020-10-28 15:13:53,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:13:53,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-28 15:13:53,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-28 15:13:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 15:13:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2020-10-28 15:13:53,846 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 22 [2020-10-28 15:13:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:53,847 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2020-10-28 15:13:53,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:13:53,847 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2020-10-28 15:13:53,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 15:13:53,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:53,849 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] [2020-10-28 15:13:53,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 15:13:53,849 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:53,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:53,850 INFO L82 PathProgramCache]: Analyzing trace with hash 357074144, now seen corresponding path program 1 times [2020-10-28 15:13:53,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:53,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181568163] [2020-10-28 15:13:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:53,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:53,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 15:13:53,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:13:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 15:13:53,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:53,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:13:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:13:53,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 15:13:53,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:54,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:54,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:54,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:54,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:54,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:54,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 15:13:54,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:54,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:13:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:54,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:13:54,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:54,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:13:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:54,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:54,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:13:54,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:54,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:13:54,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:54,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:13:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:13:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:54,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181568163] [2020-10-28 15:13:54,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:13:54,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:13:54,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588102103] [2020-10-28 15:13:54,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:13:54,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:54,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:13:54,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:13:54,097 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 5 states. [2020-10-28 15:13:54,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:54,266 INFO L93 Difference]: Finished difference Result 69 states and 97 transitions. [2020-10-28 15:13:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 15:13:54,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 15:13:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:54,268 INFO L225 Difference]: With dead ends: 69 [2020-10-28 15:13:54,268 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 15:13:54,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:13:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 15:13:54,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-28 15:13:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 15:13:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-10-28 15:13:54,279 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 22 [2020-10-28 15:13:54,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:54,279 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-10-28 15:13:54,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:13:54,279 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-10-28 15:13:54,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 15:13:54,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:54,280 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] [2020-10-28 15:13:54,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 15:13:54,281 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:54,281 INFO L82 PathProgramCache]: Analyzing trace with hash 513104896, now seen corresponding path program 1 times [2020-10-28 15:13:54,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:54,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717514898] [2020-10-28 15:13:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:54,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:54,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:54,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:54,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:54,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:54,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:55,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:13:55,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 15:13:55,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-10-28 15:13:55,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:55,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 15:13:55,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 15:13:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 15:13:55,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:13:55,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:55,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:55,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:55,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:13:55,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:55,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:55,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:55,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:55,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:13:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:55,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:55,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:13:55,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:55,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:13:55,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:55,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:55,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:55,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717514898] [2020-10-28 15:13:55,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:13:55,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 15:13:55,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878818946] [2020-10-28 15:13:55,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 15:13:55,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:55,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 15:13:55,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:13:55,377 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 5 states. [2020-10-28 15:13:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:55,524 INFO L93 Difference]: Finished difference Result 92 states and 132 transitions. [2020-10-28 15:13:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 15:13:55,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-28 15:13:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:55,527 INFO L225 Difference]: With dead ends: 92 [2020-10-28 15:13:55,527 INFO L226 Difference]: Without dead ends: 65 [2020-10-28 15:13:55,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 15:13:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-28 15:13:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2020-10-28 15:13:55,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 15:13:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2020-10-28 15:13:55,542 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 25 [2020-10-28 15:13:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:55,542 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2020-10-28 15:13:55,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 15:13:55,543 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2020-10-28 15:13:55,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 15:13:55,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:55,544 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] [2020-10-28 15:13:55,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 15:13:55,544 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:55,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:55,545 INFO L82 PathProgramCache]: Analyzing trace with hash 404822848, now seen corresponding path program 1 times [2020-10-28 15:13:55,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:55,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381444079] [2020-10-28 15:13:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:55,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 15:13:55,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 15:13:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 15:13:55,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:55,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:13:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 15:13:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 15:13:55,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:55,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:55,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:55,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:55,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:55,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:13:55,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:55,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:55,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:55,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:13:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:55,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:55,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:13:55,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:55,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:13:55,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:55,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:55,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:55,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:55,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 15:13:55,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381444079] [2020-10-28 15:13:55,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:13:55,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 15:13:55,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196729529] [2020-10-28 15:13:55,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 15:13:55,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:55,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 15:13:55,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:13:55,752 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand 4 states. [2020-10-28 15:13:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:55,850 INFO L93 Difference]: Finished difference Result 94 states and 131 transitions. [2020-10-28 15:13:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 15:13:55,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-28 15:13:55,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:55,854 INFO L225 Difference]: With dead ends: 94 [2020-10-28 15:13:55,854 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 15:13:55,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:13:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 15:13:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-10-28 15:13:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-28 15:13:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2020-10-28 15:13:55,873 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 25 [2020-10-28 15:13:55,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:55,873 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2020-10-28 15:13:55,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 15:13:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2020-10-28 15:13:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 15:13:55,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:55,875 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] [2020-10-28 15:13:55,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 15:13:55,876 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:55,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:55,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1382771180, now seen corresponding path program 1 times [2020-10-28 15:13:55,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:55,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8614766] [2020-10-28 15:13:55,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:55,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:55,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:56,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:56,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:56,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:56,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:56,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:56,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:13:56,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 15:13:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1091 [2020-10-28 15:13:56,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:56,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:13:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 15:13:56,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:13:56,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:57,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:57,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:13:57,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:57,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:57,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:13:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:57,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:57,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:13:57,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:13:57,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:57,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:13:57,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:57,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:13:57,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:57,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8614766] [2020-10-28 15:13:57,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:13:57,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 15:13:57,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512730464] [2020-10-28 15:13:57,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 15:13:57,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:57,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 15:13:57,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:13:57,071 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand 4 states. [2020-10-28 15:13:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:57,166 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2020-10-28 15:13:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 15:13:57,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-28 15:13:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:57,168 INFO L225 Difference]: With dead ends: 78 [2020-10-28 15:13:57,168 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 15:13:57,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 15:13:57,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 15:13:57,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-10-28 15:13:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 15:13:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-10-28 15:13:57,178 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 26 [2020-10-28 15:13:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:57,178 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-10-28 15:13:57,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 15:13:57,178 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-10-28 15:13:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 15:13:57,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:57,179 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] [2020-10-28 15:13:57,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 15:13:57,180 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:57,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:57,180 INFO L82 PathProgramCache]: Analyzing trace with hash 449494484, now seen corresponding path program 1 times [2020-10-28 15:13:57,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:57,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119752189] [2020-10-28 15:13:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:57,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:57,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:58,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:58,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:13:58,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 15:13:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1368 [2020-10-28 15:13:58,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:58,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:13:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:13:58,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 15:13:58,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:58,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:13:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:58,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:58,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:58,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:13:58,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 15:13:58,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:58,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:13:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:13:58,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:13:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:58,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:58,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:58,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:13:58,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:13:58,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:13:58,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:58,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:13:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:13:58,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:13:58,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:13:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:13:58,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119752189] [2020-10-28 15:13:58,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:13:58,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 15:13:58,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700554775] [2020-10-28 15:13:58,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:13:58,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:13:58,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:13:58,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:13:58,686 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 7 states. [2020-10-28 15:13:59,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:13:59,112 INFO L93 Difference]: Finished difference Result 138 states and 178 transitions. [2020-10-28 15:13:59,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:13:59,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-28 15:13:59,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:13:59,114 INFO L225 Difference]: With dead ends: 138 [2020-10-28 15:13:59,114 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 15:13:59,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:13:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 15:13:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2020-10-28 15:13:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-28 15:13:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2020-10-28 15:13:59,128 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 26 [2020-10-28 15:13:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:13:59,129 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2020-10-28 15:13:59,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:13:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2020-10-28 15:13:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-28 15:13:59,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:13:59,130 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] [2020-10-28 15:13:59,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 15:13:59,131 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:13:59,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:13:59,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1129552854, now seen corresponding path program 1 times [2020-10-28 15:13:59,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:13:59,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019090884] [2020-10-28 15:13:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:13:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:13:59,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:59,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:59,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:13:59,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:13:59,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-28 15:13:59,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:13:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-28 15:13:59,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:13:59,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:13:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:13:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:13:59,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 15:13:59,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:14:00,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:00,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:00,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:00,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 15:14:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:14:00,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:00,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:00,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:00,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:00,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:00,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:14:00,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:00,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:14:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:00,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019090884] [2020-10-28 15:14:00,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:00,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 15:14:00,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703550191] [2020-10-28 15:14:00,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:14:00,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:00,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:14:00,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:14:00,073 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 6 states. [2020-10-28 15:14:00,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:00,345 INFO L93 Difference]: Finished difference Result 195 states and 257 transitions. [2020-10-28 15:14:00,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:14:00,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-28 15:14:00,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:00,347 INFO L225 Difference]: With dead ends: 195 [2020-10-28 15:14:00,347 INFO L226 Difference]: Without dead ends: 118 [2020-10-28 15:14:00,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:14:00,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-28 15:14:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 103. [2020-10-28 15:14:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 15:14:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 130 transitions. [2020-10-28 15:14:00,376 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 130 transitions. Word has length 26 [2020-10-28 15:14:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:00,376 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 130 transitions. [2020-10-28 15:14:00,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:14:00,377 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 130 transitions. [2020-10-28 15:14:00,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 15:14:00,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:00,379 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 15:14:00,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 15:14:00,379 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1642077450, now seen corresponding path program 2 times [2020-10-28 15:14:00,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:00,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802797608] [2020-10-28 15:14:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:00,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:00,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:02,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:02,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 15:14:02,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 15:14:02,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1704 [2020-10-28 15:14:02,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:02,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:14:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:14:02,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 15:14:02,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:02,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:02,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:02,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:02,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:02,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:14:02,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:02,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:02,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:02,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:02,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:02,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:02,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:02,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:02,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:14:02,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:02,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:02,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:02,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802797608] [2020-10-28 15:14:02,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:02,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 15:14:02,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451147139] [2020-10-28 15:14:02,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:14:02,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:02,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:14:02,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:14:02,210 INFO L87 Difference]: Start difference. First operand 103 states and 130 transitions. Second operand 7 states. [2020-10-28 15:14:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:02,445 INFO L93 Difference]: Finished difference Result 233 states and 303 transitions. [2020-10-28 15:14:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:14:02,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-28 15:14:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:02,447 INFO L225 Difference]: With dead ends: 233 [2020-10-28 15:14:02,448 INFO L226 Difference]: Without dead ends: 142 [2020-10-28 15:14:02,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:14:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-28 15:14:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2020-10-28 15:14:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-28 15:14:02,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 156 transitions. [2020-10-28 15:14:02,479 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 156 transitions. Word has length 29 [2020-10-28 15:14:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:02,479 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 156 transitions. [2020-10-28 15:14:02,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:14:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 156 transitions. [2020-10-28 15:14:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 15:14:02,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:02,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:02,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 15:14:02,481 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:02,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:02,481 INFO L82 PathProgramCache]: Analyzing trace with hash -534198314, now seen corresponding path program 3 times [2020-10-28 15:14:02,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:02,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236540367] [2020-10-28 15:14:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:02,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:02,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:04,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:04,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 15:14:04,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:14:04,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2170 [2020-10-28 15:14:04,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:04,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:14:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:14:04,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 15:14:04,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:04,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:04,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:04,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:04,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:14:04,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:04,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:04,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:04,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:04,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:04,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:04,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:04,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:04,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:14:04,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:04,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:04,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:04,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:04,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [236540367] [2020-10-28 15:14:04,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:04,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:14:04,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073629312] [2020-10-28 15:14:04,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:14:04,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:04,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:14:04,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:14:04,796 INFO L87 Difference]: Start difference. First operand 125 states and 156 transitions. Second operand 8 states. [2020-10-28 15:14:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:05,083 INFO L93 Difference]: Finished difference Result 279 states and 357 transitions. [2020-10-28 15:14:05,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:14:05,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-28 15:14:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:05,085 INFO L225 Difference]: With dead ends: 279 [2020-10-28 15:14:05,085 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 15:14:05,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:14:05,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 15:14:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2020-10-28 15:14:05,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-28 15:14:05,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 184 transitions. [2020-10-28 15:14:05,103 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 184 transitions. Word has length 32 [2020-10-28 15:14:05,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:05,104 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 184 transitions. [2020-10-28 15:14:05,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:14:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 184 transitions. [2020-10-28 15:14:05,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 15:14:05,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:05,108 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:05,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 15:14:05,108 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:05,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:05,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1764439798, now seen corresponding path program 4 times [2020-10-28 15:14:05,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:05,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409449114] [2020-10-28 15:14:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:05,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:05,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:07,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:07,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 15:14:07,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:14:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2410 [2020-10-28 15:14:07,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:07,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 15:14:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:14:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 15:14:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:07,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:07,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:07,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:14:07,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:07,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:07,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:07,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:07,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:07,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:07,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:14:07,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:07,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:07,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:07,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409449114] [2020-10-28 15:14:07,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:07,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:14:07,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324759723] [2020-10-28 15:14:07,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:14:07,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:07,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:14:07,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:14:07,679 INFO L87 Difference]: Start difference. First operand 149 states and 184 transitions. Second operand 9 states. [2020-10-28 15:14:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:07,993 INFO L93 Difference]: Finished difference Result 327 states and 413 transitions. [2020-10-28 15:14:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:14:07,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-28 15:14:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:07,995 INFO L225 Difference]: With dead ends: 327 [2020-10-28 15:14:07,995 INFO L226 Difference]: Without dead ends: 190 [2020-10-28 15:14:07,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-28 15:14:07,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-28 15:14:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2020-10-28 15:14:08,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-28 15:14:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 212 transitions. [2020-10-28 15:14:08,010 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 212 transitions. Word has length 35 [2020-10-28 15:14:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:08,012 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 212 transitions. [2020-10-28 15:14:08,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:14:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 212 transitions. [2020-10-28 15:14:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 15:14:08,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:08,017 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:08,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 15:14:08,018 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:08,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:08,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1533866966, now seen corresponding path program 5 times [2020-10-28 15:14:08,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:08,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349765187] [2020-10-28 15:14:08,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:08,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:08,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:09,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:09,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 15:14:09,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:14:09,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1740 [2020-10-28 15:14:09,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:09,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:14:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:14:09,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 15:14:09,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:09,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:09,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:09,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:09,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 15:14:09,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:09,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:09,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:09,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:09,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:09,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:09,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:09,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:09,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:14:09,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:09,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:09,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:09,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:09,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 15:14:09,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349765187] [2020-10-28 15:14:09,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:09,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 15:14:09,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49048551] [2020-10-28 15:14:09,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 15:14:09,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:09,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 15:14:09,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 15:14:09,926 INFO L87 Difference]: Start difference. First operand 173 states and 212 transitions. Second operand 10 states. [2020-10-28 15:14:10,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:10,215 INFO L93 Difference]: Finished difference Result 375 states and 469 transitions. [2020-10-28 15:14:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 15:14:10,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-28 15:14:10,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:10,218 INFO L225 Difference]: With dead ends: 375 [2020-10-28 15:14:10,218 INFO L226 Difference]: Without dead ends: 214 [2020-10-28 15:14:10,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-28 15:14:10,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-28 15:14:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 197. [2020-10-28 15:14:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-28 15:14:10,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 240 transitions. [2020-10-28 15:14:10,237 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 240 transitions. Word has length 38 [2020-10-28 15:14:10,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:10,237 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 240 transitions. [2020-10-28 15:14:10,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 15:14:10,237 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 240 transitions. [2020-10-28 15:14:10,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 15:14:10,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:10,239 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:10,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 15:14:10,239 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:10,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:10,240 INFO L82 PathProgramCache]: Analyzing trace with hash 191335158, now seen corresponding path program 6 times [2020-10-28 15:14:10,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:10,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020137900] [2020-10-28 15:14:10,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:10,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:12,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 15:14:12,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 15:14:12,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1775 [2020-10-28 15:14:12,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:12,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:12,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 15:14:12,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 15:14:12,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 15:14:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 15:14:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:12,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:12,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:12,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 15:14:12,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:12,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:12,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:12,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:12,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:12,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:14:12,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:12,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:12,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:12,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:12,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-28 15:14:12,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020137900] [2020-10-28 15:14:12,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:12,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 15:14:12,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641415046] [2020-10-28 15:14:12,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 15:14:12,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:12,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 15:14:12,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:14:12,283 INFO L87 Difference]: Start difference. First operand 197 states and 240 transitions. Second operand 9 states. [2020-10-28 15:14:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:12,623 INFO L93 Difference]: Finished difference Result 296 states and 361 transitions. [2020-10-28 15:14:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 15:14:12,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-28 15:14:12,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:12,625 INFO L225 Difference]: With dead ends: 296 [2020-10-28 15:14:12,626 INFO L226 Difference]: Without dead ends: 293 [2020-10-28 15:14:12,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:14:12,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-28 15:14:12,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292. [2020-10-28 15:14:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-28 15:14:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 356 transitions. [2020-10-28 15:14:12,647 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 356 transitions. Word has length 41 [2020-10-28 15:14:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:12,647 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 356 transitions. [2020-10-28 15:14:12,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 15:14:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 356 transitions. [2020-10-28 15:14:12,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 15:14:12,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:12,648 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:12,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 15:14:12,648 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:12,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:12,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1850110198, now seen corresponding path program 1 times [2020-10-28 15:14:12,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:12,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885869662] [2020-10-28 15:14:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:12,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:12,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:13,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:13,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:13,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:13,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:17,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:17,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 15:14:17,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 15:14:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 15:14:17,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:17,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:14:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:14:17,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 15:14:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:17,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:17,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:17,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:17,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:17,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:17,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:14:17,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:17,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:17,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:17,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:17,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:17,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:17,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:17,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:17,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:17,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:14:17,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:17,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:17,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:17,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:17,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:17,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-28 15:14:17,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885869662] [2020-10-28 15:14:17,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 15:14:17,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 15:14:17,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210340993] [2020-10-28 15:14:17,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:14:17,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:17,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:14:17,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:14:17,800 INFO L87 Difference]: Start difference. First operand 292 states and 356 transitions. Second operand 6 states. [2020-10-28 15:14:17,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:17,987 INFO L93 Difference]: Finished difference Result 479 states and 590 transitions. [2020-10-28 15:14:17,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 15:14:17,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-28 15:14:17,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:17,990 INFO L225 Difference]: With dead ends: 479 [2020-10-28 15:14:17,990 INFO L226 Difference]: Without dead ends: 381 [2020-10-28 15:14:17,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:14:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-28 15:14:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2020-10-28 15:14:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-28 15:14:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 466 transitions. [2020-10-28 15:14:18,019 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 466 transitions. Word has length 41 [2020-10-28 15:14:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:18,019 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 466 transitions. [2020-10-28 15:14:18,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:14:18,020 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 466 transitions. [2020-10-28 15:14:18,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 15:14:18,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:18,021 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 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] [2020-10-28 15:14:18,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 15:14:18,021 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:18,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2080346384, now seen corresponding path program 1 times [2020-10-28 15:14:18,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:18,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604375399] [2020-10-28 15:14:18,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:18,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:18,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:19,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:20,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:21,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:21,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:21,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:22,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:23,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:23,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 15:14:23,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-28 15:14:23,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 15:14:23,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:23,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 15:14:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:14:23,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 15:14:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:23,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:23,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:23,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:23,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:23,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 15:14:23,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:23,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:23,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:23,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:23,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:23,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:23,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:23,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:23,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:14:23,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:23,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:23,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:23,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:23,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 15:14:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:23,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:23,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:23,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:14:23,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:23,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:23,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:23,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 3 proven. 126 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-28 15:14:23,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604375399] [2020-10-28 15:14:23,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:23,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 15:14:23,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65205907] [2020-10-28 15:14:23,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 15:14:23,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:23,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 15:14:23,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 15:14:23,179 INFO L87 Difference]: Start difference. First operand 381 states and 466 transitions. Second operand 7 states. [2020-10-28 15:14:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:23,449 INFO L93 Difference]: Finished difference Result 742 states and 914 transitions. [2020-10-28 15:14:23,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:14:23,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-28 15:14:23,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:23,453 INFO L225 Difference]: With dead ends: 742 [2020-10-28 15:14:23,453 INFO L226 Difference]: Without dead ends: 557 [2020-10-28 15:14:23,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 15:14:23,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2020-10-28 15:14:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 468. [2020-10-28 15:14:23,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-28 15:14:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 574 transitions. [2020-10-28 15:14:23,490 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 574 transitions. Word has length 70 [2020-10-28 15:14:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:23,490 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 574 transitions. [2020-10-28 15:14:23,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 15:14:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 574 transitions. [2020-10-28 15:14:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 15:14:23,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:23,492 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:23,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 15:14:23,492 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:23,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1004789558, now seen corresponding path program 2 times [2020-10-28 15:14:23,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:23,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343925153] [2020-10-28 15:14:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:23,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:23,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:23,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:23,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:24,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:24,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:26,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:26,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:28,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:28,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 15:14:28,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 15:14:28,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 15:14:28,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:28,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 15:14:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 15:14:28,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 15:14:28,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:28,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:28,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:28,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:28,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 15:14:28,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:28,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:28,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 15:14:28,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:28,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:28,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:28,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:28,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:28,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:28,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 15:14:28,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:28,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:28,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:28,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 15:14:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:28,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:28,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:28,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:14:28,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:28,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 15:14:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:28,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:28,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:28,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:28,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:28,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:14:28,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:28,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:28,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:28,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 6 proven. 379 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-28 15:14:28,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343925153] [2020-10-28 15:14:28,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:28,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 15:14:28,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906275533] [2020-10-28 15:14:28,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 15:14:28,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:28,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 15:14:28,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 15:14:28,690 INFO L87 Difference]: Start difference. First operand 468 states and 574 transitions. Second operand 8 states. [2020-10-28 15:14:28,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:28,992 INFO L93 Difference]: Finished difference Result 829 states and 1022 transitions. [2020-10-28 15:14:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 15:14:28,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2020-10-28 15:14:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:29,000 INFO L225 Difference]: With dead ends: 829 [2020-10-28 15:14:29,000 INFO L226 Difference]: Without dead ends: 644 [2020-10-28 15:14:29,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 15:14:29,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2020-10-28 15:14:29,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 555. [2020-10-28 15:14:29,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-10-28 15:14:29,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 682 transitions. [2020-10-28 15:14:29,050 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 682 transitions. Word has length 99 [2020-10-28 15:14:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:29,050 INFO L481 AbstractCegarLoop]: Abstraction has 555 states and 682 transitions. [2020-10-28 15:14:29,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 15:14:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 682 transitions. [2020-10-28 15:14:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 15:14:29,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 15:14:29,059 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 15:14:29,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 15:14:29,059 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 15:14:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 15:14:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1819003600, now seen corresponding path program 3 times [2020-10-28 15:14:29,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 15:14:29,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055238135] [2020-10-28 15:14:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 15:14:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:29,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:29,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:29,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:29,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:29,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:29,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:31,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:31,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:32,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:34,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:34,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 15:14:34,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 15:14:34,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 15:14:34,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:34,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 15:14:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 15:14:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 15:14:34,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:34,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 15:14:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:34,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:34,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:34,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 15:14:34,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:34,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:14:34,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:34,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:34,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:34,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:34,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:34,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 15:14:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:34,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:34,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:34,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:14:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:34,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:34,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:34,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:34,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 15:14:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:34,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:34,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:34,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:34,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:14:34,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:34,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:34,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 15:14:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:34,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:34,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:34,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:34,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:34,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 15:14:34,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:34,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 15:14:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 15:14:34,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 15:14:34,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:34,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 15:14:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 15:14:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 15:14:34,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 15:14:34,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 15:14:34,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 15:14:34,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 15:14:34,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 15:14:34,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 15:14:34,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 15:14:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 15:14:34,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 15:14:34,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 15:14:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 984 backedges. 639 proven. 24 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2020-10-28 15:14:34,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055238135] [2020-10-28 15:14:34,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 15:14:34,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 15:14:34,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862660710] [2020-10-28 15:14:34,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 15:14:34,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 15:14:34,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 15:14:34,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 15:14:34,223 INFO L87 Difference]: Start difference. First operand 555 states and 682 transitions. Second operand 6 states. [2020-10-28 15:14:34,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 15:14:34,549 INFO L93 Difference]: Finished difference Result 754 states and 925 transitions. [2020-10-28 15:14:34,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 15:14:34,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2020-10-28 15:14:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 15:14:34,550 INFO L225 Difference]: With dead ends: 754 [2020-10-28 15:14:34,550 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 15:14:34,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-28 15:14:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 15:14:34,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 15:14:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 15:14:34,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 15:14:34,554 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 128 [2020-10-28 15:14:34,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 15:14:34,554 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 15:14:34,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 15:14:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 15:14:34,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 15:14:34,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 15:14:34,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 15:14:34,922 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 39 [2020-10-28 15:14:35,405 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-10-28 15:14:35,448 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 15:14:35,448 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 15:14:35,448 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 15:14:35,448 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 15:14:35,449 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:14:35,449 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~last~0 |old(~last~0)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 15:14:35,449 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:14:35,450 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 15:14:35,450 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~SIZE~0 200000) (<= (+ ~last~0 200000) ~SIZE~0)) [2020-10-28 15:14:35,450 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 15:14:35,450 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 15:14:35,450 INFO L277 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-10-28 15:14:35,450 INFO L274 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-28 15:14:35,450 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2020-10-28 15:14:35,450 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-10-28 15:14:35,451 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 29) no Hoare annotation was computed. [2020-10-28 15:14:35,451 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 20 47) no Hoare annotation was computed. [2020-10-28 15:14:35,451 INFO L270 CegarLoopResult]: At program point L27-3(lines 27 29) the Hoare annotation is: (let ((.cse2 (<= (+ main_~c~0 1) ~SIZE~0))) (let ((.cse4 (<= 1 main_~st~0)) (.cse1 (<= (+ main_~d~0 199999) ~SIZE~0)) (.cse0 (+ ~last~0 1)) (.cse3 (= main_~b~0 main_~a~0)) (.cse5 (or (= ~SIZE~0 main_~c~0) .cse2))) (or (and (<= .cse0 ~SIZE~0) .cse1 .cse2 .cse3 .cse4) (and .cse3 .cse5 (= main_~d~0 0) .cse4) (and .cse1 (<= .cse0 main_~c~0) (<= main_~st~0 0) .cse3 .cse5) (not (<= (+ |old(~last~0)| 200000) ~SIZE~0)) (not (= ~SIZE~0 200000))))) [2020-10-28 15:14:35,451 INFO L277 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-10-28 15:14:35,451 INFO L274 CegarLoopResult]: For program point L27-4(lines 25 45) no Hoare annotation was computed. [2020-10-28 15:14:35,451 INFO L274 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-10-28 15:14:35,451 INFO L270 CegarLoopResult]: At program point L44(lines 25 45) the Hoare annotation is: (let ((.cse0 (= main_~b~0 main_~a~0))) (or (and .cse0 (= main_~d~0 0)) (and (<= (+ ~last~0 1) ~SIZE~0) (<= (+ main_~d~0 199999) ~SIZE~0) (= ~SIZE~0 main_~c~0) .cse0) (not (<= (+ |old(~last~0)| 200000) ~SIZE~0)) (not (= ~SIZE~0 200000)))) [2020-10-28 15:14:35,451 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-28 15:14:35,452 INFO L274 CegarLoopResult]: For program point L36-2(lines 25 45) no Hoare annotation was computed. [2020-10-28 15:14:35,452 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-28 15:14:35,452 INFO L274 CegarLoopResult]: For program point L25-2(lines 25 45) no Hoare annotation was computed. [2020-10-28 15:14:35,452 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 20 47) no Hoare annotation was computed. [2020-10-28 15:14:35,452 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 20 47) the Hoare annotation is: (or (= ~last~0 |old(~last~0)|) (not (<= (+ |old(~last~0)| 200000) ~SIZE~0)) (not (= ~SIZE~0 200000))) [2020-10-28 15:14:35,452 INFO L274 CegarLoopResult]: For program point L30-1(lines 25 45) no Hoare annotation was computed. [2020-10-28 15:14:35,452 INFO L270 CegarLoopResult]: At program point L39-1(lines 39 42) the Hoare annotation is: (let ((.cse0 (= ~SIZE~0 main_~c~0)) (.cse1 (= main_~b~0 main_~a~0))) (or (and .cse0 .cse1 (= main_~d~0 0)) (and (<= (+ ~last~0 1) ~SIZE~0) (<= (+ main_~d~0 199999) ~SIZE~0) .cse0 .cse1) (not (<= (+ |old(~last~0)| 200000) ~SIZE~0)) (not (= ~SIZE~0 200000)))) [2020-10-28 15:14:35,452 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 10 15) the Hoare annotation is: true [2020-10-28 15:14:35,452 INFO L270 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (= ~SIZE~0 200000))) [2020-10-28 15:14:35,453 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-10-28 15:14:35,453 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 15:14:35,453 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 10 15) no Hoare annotation was computed. [2020-10-28 15:14:35,453 INFO L274 CegarLoopResult]: For program point L11-2(lines 10 15) no Hoare annotation was computed. [2020-10-28 15:14:35,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 03:14:35 BoogieIcfgContainer [2020-10-28 15:14:35,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 15:14:35,490 INFO L168 Benchmark]: Toolchain (without parser) took 44644.67 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 126.3 MB in the beginning and 383.3 MB in the end (delta: -257.1 MB). Peak memory consumption was 246.5 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:35,491 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 15:14:35,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:35,497 INFO L168 Benchmark]: Boogie Preprocessor took 37.15 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:35,498 INFO L168 Benchmark]: RCFGBuilder took 351.61 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 98.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:35,498 INFO L168 Benchmark]: TraceAbstraction took 43994.69 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 98.2 MB in the beginning and 383.3 MB in the end (delta: -285.1 MB). Peak memory consumption was 218.2 MB. Max. memory is 8.0 GB. [2020-10-28 15:14:35,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.15 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 351.61 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 98.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 43994.69 ms. Allocated memory was 151.0 MB in the beginning and 653.3 MB in the end (delta: 502.3 MB). Free memory was 98.2 MB in the beginning and 383.3 MB in the end (delta: -285.1 MB). Peak memory consumption was 218.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((b == a && d == 0) || (((last + 1 <= SIZE && d + 199999 <= SIZE) && SIZE == c) && b == a)) || !(\old(last) + 200000 <= SIZE)) || !(SIZE == 200000) - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((((last + 1 <= SIZE && d + 199999 <= SIZE) && c + 1 <= SIZE) && b == a) && 1 <= st) || (((b == a && (SIZE == c || c + 1 <= SIZE)) && d == 0) && 1 <= st)) || ((((d + 199999 <= SIZE && last + 1 <= c) && st <= 0) && b == a) && (SIZE == c || c + 1 <= SIZE))) || !(\old(last) + 200000 <= SIZE)) || !(SIZE == 200000) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 42.9s, OverallIterations: 17, TraceHistogramMax: 24, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 414 SDtfs, 867 SDslu, 262 SDs, 0 SdLazy, 1653 SolverSat, 214 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=555occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 309 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 142 PreInvPairs, 209 NumberOfFragments, 225 HoareAnnotationTreeSize, 142 FomulaSimplifications, 94282 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 12 FomulaSimplificationsInter, 625 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 37.6s InterpolantComputationTime, 707 NumberOfCodeBlocks, 707 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 690 ConstructedInterpolants, 0 QuantifiedInterpolants, 158230 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 1317/1938 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...