/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:37:28,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:37:28,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:37:28,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:37:28,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:37:28,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:37:28,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:37:28,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:37:28,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:37:28,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:37:28,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:37:28,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:37:28,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:37:28,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:37:28,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:37:28,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:37:28,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:37:28,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:37:28,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:37:28,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:37:28,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:37:28,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:37:28,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:37:28,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:37:28,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:37:28,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:37:28,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:37:28,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:37:28,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:37:28,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:37:28,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:37:28,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:37:28,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:37:28,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:37:28,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:37:28,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:37:28,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:37:28,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:37:28,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:37:28,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:37:28,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:37:28,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:37:28,423 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:37:28,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:37:28,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:37:28,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:37:28,429 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:37:28,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:37:28,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:37:28,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:37:28,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:37:28,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:37:28,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:37:28,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:37:28,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:37:28,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:37:28,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:37:28,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:37:28,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:37:28,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:37:28,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:37:28,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:37:28,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:37:28,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:37:28,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:37:28,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:37:28,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:37:28,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:37:28,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:37:28,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:37:28,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:37:28,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:37:28,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:37:28,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:37:28,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:37:28,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:37:28,859 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:37:28,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-10-27 01:37:28,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d59add157/7e16069e70fe41929b20761ab2e6697a/FLAG59dd1110b [2020-10-27 01:37:29,716 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:37:29,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-10-27 01:37:29,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d59add157/7e16069e70fe41929b20761ab2e6697a/FLAG59dd1110b [2020-10-27 01:37:30,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d59add157/7e16069e70fe41929b20761ab2e6697a [2020-10-27 01:37:30,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:37:30,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:37:30,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:37:30,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:37:30,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:37:30,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:37:30" (1/1) ... [2020-10-27 01:37:30,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b33b144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30, skipping insertion in model container [2020-10-27 01:37:30,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:37:30" (1/1) ... [2020-10-27 01:37:30,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:37:30,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:37:30,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:37:30,450 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:37:30,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:37:30,542 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:37:30,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30 WrapperNode [2020-10-27 01:37:30,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:37:30,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:37:30,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:37:30,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:37:30,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30" (1/1) ... [2020-10-27 01:37:30,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30" (1/1) ... [2020-10-27 01:37:30,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30" (1/1) ... [2020-10-27 01:37:30,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30" (1/1) ... [2020-10-27 01:37:30,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30" (1/1) ... [2020-10-27 01:37:30,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30" (1/1) ... [2020-10-27 01:37:30,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30" (1/1) ... [2020-10-27 01:37:30,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:37:30,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:37:30,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:37:30,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:37:30,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:37:30,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:37:30,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:37:30,730 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:37:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 01:37:30,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:37:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:37:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:37:30,732 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:37:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:37:30,733 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 01:37:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:37:30,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:37:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:37:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:37:30,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:37:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:37:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:37:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:37:30,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:37:31,651 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:37:31,651 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 01:37:31,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:37:31 BoogieIcfgContainer [2020-10-27 01:37:31,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:37:31,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:37:31,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:37:31,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:37:31,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:37:30" (1/3) ... [2020-10-27 01:37:31,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac54ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:37:31, skipping insertion in model container [2020-10-27 01:37:31,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:37:30" (2/3) ... [2020-10-27 01:37:31,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac54ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:37:31, skipping insertion in model container [2020-10-27 01:37:31,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:37:31" (3/3) ... [2020-10-27 01:37:31,663 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-10-27 01:37:31,678 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:37:31,683 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:37:31,698 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:37:31,731 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:37:31,731 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:37:31,731 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:37:31,732 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:37:31,732 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:37:31,732 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:37:31,732 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:37:31,732 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:37:31,757 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-10-27 01:37:31,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 01:37:31,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:31,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:31,766 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:31,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:31,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1325857548, now seen corresponding path program 1 times [2020-10-27 01:37:31,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:31,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843880431] [2020-10-27 01:37:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:31,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:32,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 01:37:32,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:32,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-27 01:37:32,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:32,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:37:32,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:32,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 01:37:32,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 01:37:32,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:32,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:32,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 01:37:32,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:32,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:32,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:32,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:32,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843880431] [2020-10-27 01:37:32,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:32,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:37:32,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064709666] [2020-10-27 01:37:32,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:37:32,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:32,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:37:32,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:37:32,458 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 5 states. [2020-10-27 01:37:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:33,188 INFO L93 Difference]: Finished difference Result 148 states and 242 transitions. [2020-10-27 01:37:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:37:33,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-27 01:37:33,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:33,203 INFO L225 Difference]: With dead ends: 148 [2020-10-27 01:37:33,203 INFO L226 Difference]: Without dead ends: 109 [2020-10-27 01:37:33,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:37:33,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-27 01:37:33,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2020-10-27 01:37:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-27 01:37:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 140 transitions. [2020-10-27 01:37:33,268 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 140 transitions. Word has length 12 [2020-10-27 01:37:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:33,269 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 140 transitions. [2020-10-27 01:37:33,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:37:33,269 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 140 transitions. [2020-10-27 01:37:33,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:37:33,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:33,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:33,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:37:33,271 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:33,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:33,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1847835175, now seen corresponding path program 1 times [2020-10-27 01:37:33,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:33,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001392372] [2020-10-27 01:37:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:33,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:33,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:33,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:33,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 01:37:33,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:33,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-27 01:37:33,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:37:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:33,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:37:33,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:37:33,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:33,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:33,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:33,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:33,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:33,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 01:37:33,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:33,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:33,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:33,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:33,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001392372] [2020-10-27 01:37:33,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:33,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:37:33,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786017352] [2020-10-27 01:37:33,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:37:33,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:33,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:37:33,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:37:33,618 INFO L87 Difference]: Start difference. First operand 105 states and 140 transitions. Second operand 5 states. [2020-10-27 01:37:34,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:34,127 INFO L93 Difference]: Finished difference Result 110 states and 144 transitions. [2020-10-27 01:37:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:37:34,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-27 01:37:34,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:34,130 INFO L225 Difference]: With dead ends: 110 [2020-10-27 01:37:34,130 INFO L226 Difference]: Without dead ends: 101 [2020-10-27 01:37:34,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:37:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-27 01:37:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-10-27 01:37:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 01:37:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2020-10-27 01:37:34,144 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 13 [2020-10-27 01:37:34,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:34,145 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2020-10-27 01:37:34,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:37:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2020-10-27 01:37:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:37:34,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:34,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:34,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:37:34,146 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:34,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:34,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1911838937, now seen corresponding path program 1 times [2020-10-27 01:37:34,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:34,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664967001] [2020-10-27 01:37:34,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:34,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:34,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:34,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:34,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 01:37:34,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:34,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-27 01:37:34,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:37:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:34,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 01:37:34,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:34,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:34,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:34,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:34,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:37:34,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:34,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664967001] [2020-10-27 01:37:34,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:34,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:37:34,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243422338] [2020-10-27 01:37:34,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:37:34,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:34,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:37:34,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:37:34,607 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand 5 states. [2020-10-27 01:37:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:34,951 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2020-10-27 01:37:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:37:34,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-27 01:37:34,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:34,953 INFO L225 Difference]: With dead ends: 103 [2020-10-27 01:37:34,953 INFO L226 Difference]: Without dead ends: 100 [2020-10-27 01:37:34,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:37:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-27 01:37:34,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-27 01:37:34,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-27 01:37:34,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2020-10-27 01:37:34,965 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 16 [2020-10-27 01:37:34,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:34,965 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2020-10-27 01:37:34,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:37:34,966 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2020-10-27 01:37:34,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 01:37:34,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:34,967 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:34,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:37:34,967 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:34,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:34,968 INFO L82 PathProgramCache]: Analyzing trace with hash 862307371, now seen corresponding path program 1 times [2020-10-27 01:37:34,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:34,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598448164] [2020-10-27 01:37:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:34,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:35,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:35,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:35,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 01:37:35,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 01:37:35,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-27 01:37:35,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:37:35,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:35,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 01:37:35,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:37:35,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:35,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:35,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:35,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:35,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 01:37:35,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:35,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:35,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:35,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:35,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:37:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:35,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598448164] [2020-10-27 01:37:35,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:35,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:35,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322030357] [2020-10-27 01:37:35,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:35,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:35,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:35,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:35,533 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand 6 states. [2020-10-27 01:37:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:36,058 INFO L93 Difference]: Finished difference Result 102 states and 125 transitions. [2020-10-27 01:37:36,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:37:36,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-27 01:37:36,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:36,064 INFO L225 Difference]: With dead ends: 102 [2020-10-27 01:37:36,064 INFO L226 Difference]: Without dead ends: 97 [2020-10-27 01:37:36,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:37:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-27 01:37:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-27 01:37:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-27 01:37:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2020-10-27 01:37:36,074 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 17 [2020-10-27 01:37:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:36,075 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2020-10-27 01:37:36,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2020-10-27 01:37:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 01:37:36,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:36,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:36,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:37:36,076 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:36,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1372713766, now seen corresponding path program 1 times [2020-10-27 01:37:36,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:36,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952504111] [2020-10-27 01:37:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:36,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:36,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:36,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:37:36,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-27 01:37:36,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:37:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:37:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:36,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:36,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:36,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:37:36,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:36,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:36,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:36,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952504111] [2020-10-27 01:37:36,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:36,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:36,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317579373] [2020-10-27 01:37:36,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:36,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:36,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:36,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:36,376 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand 6 states. [2020-10-27 01:37:36,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:36,903 INFO L93 Difference]: Finished difference Result 113 states and 141 transitions. [2020-10-27 01:37:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:37:36,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-27 01:37:36,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:36,905 INFO L225 Difference]: With dead ends: 113 [2020-10-27 01:37:36,905 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 01:37:36,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:37:36,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 01:37:36,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 96. [2020-10-27 01:37:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-27 01:37:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2020-10-27 01:37:36,925 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 18 [2020-10-27 01:37:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:36,926 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2020-10-27 01:37:36,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:36,926 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2020-10-27 01:37:36,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 01:37:36,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:36,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:36,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:37:36,927 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:36,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1420427788, now seen corresponding path program 1 times [2020-10-27 01:37:36,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:36,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428048967] [2020-10-27 01:37:36,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:36,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:37,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:37,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:37:37,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:37,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 01:37:37,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:37,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:37:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 01:37:37,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:37,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:37,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:37,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:37,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:37:37,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:37,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428048967] [2020-10-27 01:37:37,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:37,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:37,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575690916] [2020-10-27 01:37:37,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:37,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:37,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:37,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:37,269 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand 6 states. [2020-10-27 01:37:37,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:37,826 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2020-10-27 01:37:37,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:37:37,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-27 01:37:37,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:37,829 INFO L225 Difference]: With dead ends: 98 [2020-10-27 01:37:37,829 INFO L226 Difference]: Without dead ends: 95 [2020-10-27 01:37:37,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:37:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-27 01:37:37,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-27 01:37:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-27 01:37:37,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2020-10-27 01:37:37,849 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 18 [2020-10-27 01:37:37,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:37,849 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2020-10-27 01:37:37,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2020-10-27 01:37:37,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:37:37,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:37,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:37,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 01:37:37,854 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:37,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:37,855 INFO L82 PathProgramCache]: Analyzing trace with hash -353431009, now seen corresponding path program 1 times [2020-10-27 01:37:37,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:37,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662847037] [2020-10-27 01:37:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:37,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:38,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:38,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:37:38,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:38,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-27 01:37:38,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 01:37:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:38,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:37:38,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:38,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:38,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:38,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:38,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:38,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:37:38,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:38,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:38,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:38,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:37:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:38,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662847037] [2020-10-27 01:37:38,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:38,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:38,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629298029] [2020-10-27 01:37:38,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:38,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:38,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:38,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:38,280 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand 6 states. [2020-10-27 01:37:38,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:38,770 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2020-10-27 01:37:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 01:37:38,770 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-27 01:37:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:38,772 INFO L225 Difference]: With dead ends: 114 [2020-10-27 01:37:38,772 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 01:37:38,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:37:38,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 01:37:38,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 94. [2020-10-27 01:37:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 01:37:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2020-10-27 01:37:38,790 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 19 [2020-10-27 01:37:38,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:38,791 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2020-10-27 01:37:38,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2020-10-27 01:37:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:37:38,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:38,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:38,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 01:37:38,793 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:38,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:38,793 INFO L82 PathProgramCache]: Analyzing trace with hash -395758440, now seen corresponding path program 1 times [2020-10-27 01:37:38,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:38,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906956117] [2020-10-27 01:37:38,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:38,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:38,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:39,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:39,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:37:39,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-27 01:37:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:37:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:39,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:37:39,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:39,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:39,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:39,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:37:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:39,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:39,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906956117] [2020-10-27 01:37:39,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:39,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:39,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820175760] [2020-10-27 01:37:39,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:39,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:39,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:39,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:39,218 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand 6 states. [2020-10-27 01:37:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:39,723 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2020-10-27 01:37:39,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:37:39,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-27 01:37:39,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:39,726 INFO L225 Difference]: With dead ends: 109 [2020-10-27 01:37:39,726 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 01:37:39,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:37:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 01:37:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 93. [2020-10-27 01:37:39,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-27 01:37:39,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2020-10-27 01:37:39,738 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 19 [2020-10-27 01:37:39,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:39,740 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2020-10-27 01:37:39,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2020-10-27 01:37:39,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:37:39,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:39,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:39,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 01:37:39,742 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:39,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:39,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1083413132, now seen corresponding path program 1 times [2020-10-27 01:37:39,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:39,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701221399] [2020-10-27 01:37:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:39,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:39,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:40,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:40,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 01:37:40,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:40,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 01:37:40,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:37:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:40,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:37:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:40,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:40,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:40,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:40,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:40,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:37:40,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:40,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:40,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701221399] [2020-10-27 01:37:40,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:40,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:40,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957433245] [2020-10-27 01:37:40,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:40,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:40,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:40,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:40,134 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand 6 states. [2020-10-27 01:37:40,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:40,606 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2020-10-27 01:37:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:37:40,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-27 01:37:40,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:40,608 INFO L225 Difference]: With dead ends: 95 [2020-10-27 01:37:40,608 INFO L226 Difference]: Without dead ends: 90 [2020-10-27 01:37:40,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:37:40,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-27 01:37:40,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-27 01:37:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-27 01:37:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2020-10-27 01:37:40,615 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 19 [2020-10-27 01:37:40,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:40,615 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2020-10-27 01:37:40,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2020-10-27 01:37:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 01:37:40,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:40,616 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] [2020-10-27 01:37:40,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 01:37:40,617 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:40,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:40,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1928350734, now seen corresponding path program 1 times [2020-10-27 01:37:40,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:40,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543299649] [2020-10-27 01:37:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:40,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:40,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:40,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 01:37:40,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:37:40,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 01:37:40,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 01:37:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:40,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 01:37:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:40,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:40,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:40,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:40,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:40,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:40,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:37:40,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:40,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:40,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:40,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:40,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543299649] [2020-10-27 01:37:40,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:40,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:40,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761458037] [2020-10-27 01:37:40,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:40,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:40,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:40,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:40,888 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand 6 states. [2020-10-27 01:37:41,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:41,408 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2020-10-27 01:37:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:37:41,409 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-27 01:37:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:41,410 INFO L225 Difference]: With dead ends: 106 [2020-10-27 01:37:41,410 INFO L226 Difference]: Without dead ends: 103 [2020-10-27 01:37:41,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:37:41,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-27 01:37:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2020-10-27 01:37:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-27 01:37:41,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2020-10-27 01:37:41,417 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 20 [2020-10-27 01:37:41,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:41,417 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2020-10-27 01:37:41,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:41,417 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2020-10-27 01:37:41,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 01:37:41,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:41,418 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] [2020-10-27 01:37:41,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 01:37:41,419 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:41,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:41,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1921473852, now seen corresponding path program 1 times [2020-10-27 01:37:41,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:41,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604628785] [2020-10-27 01:37:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:41,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:42,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:42,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:37:42,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:37:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-10-27 01:37:42,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:37:42,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 01:37:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:42,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:42,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:42,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:42,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:42,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:42,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:37:42,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:42,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:42,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:42,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:42,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:42,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604628785] [2020-10-27 01:37:42,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:42,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 01:37:42,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806774378] [2020-10-27 01:37:42,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:37:42,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:42,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:37:42,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:37:42,359 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand 5 states. [2020-10-27 01:37:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:42,664 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2020-10-27 01:37:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 01:37:42,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-27 01:37:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:42,666 INFO L225 Difference]: With dead ends: 91 [2020-10-27 01:37:42,666 INFO L226 Difference]: Without dead ends: 88 [2020-10-27 01:37:42,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 01:37:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-27 01:37:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-27 01:37:42,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-27 01:37:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 104 transitions. [2020-10-27 01:37:42,678 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 104 transitions. Word has length 21 [2020-10-27 01:37:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:42,679 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 104 transitions. [2020-10-27 01:37:42,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:37:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 104 transitions. [2020-10-27 01:37:42,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 01:37:42,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:42,680 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] [2020-10-27 01:37:42,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 01:37:42,680 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash -564054263, now seen corresponding path program 1 times [2020-10-27 01:37:42,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:42,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063686437] [2020-10-27 01:37:42,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:42,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:43,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:43,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 01:37:43,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 01:37:43,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-27 01:37:43,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:37:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:43,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 01:37:43,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:43,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:43,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:43,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:43,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:43,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 01:37:43,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:43,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:43,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063686437] [2020-10-27 01:37:43,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:43,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:43,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055511357] [2020-10-27 01:37:43,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:43,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:43,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:43,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:43,210 INFO L87 Difference]: Start difference. First operand 88 states and 104 transitions. Second operand 6 states. [2020-10-27 01:37:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:43,701 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-10-27 01:37:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:37:43,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-27 01:37:43,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:43,702 INFO L225 Difference]: With dead ends: 90 [2020-10-27 01:37:43,703 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 01:37:43,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:37:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 01:37:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-27 01:37:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 01:37:43,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-27 01:37:43,709 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 22 [2020-10-27 01:37:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:43,709 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-27 01:37:43,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-27 01:37:43,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:37:43,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:43,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:43,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 01:37:43,711 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:43,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:43,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1207699070, now seen corresponding path program 1 times [2020-10-27 01:37:43,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:43,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605958402] [2020-10-27 01:37:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:43,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:43,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:43,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:44,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:44,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:45,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:48,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:48,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 01:37:48,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 01:37:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 01:37:48,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:37:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:48,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 01:37:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:48,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:48,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:37:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:48,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605958402] [2020-10-27 01:37:48,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:48,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 01:37:48,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995866017] [2020-10-27 01:37:48,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:37:48,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:48,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:37:48,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:37:48,974 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 14 states. [2020-10-27 01:37:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:49,707 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-10-27 01:37:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:37:49,708 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-27 01:37:49,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:49,709 INFO L225 Difference]: With dead ends: 65 [2020-10-27 01:37:49,709 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 01:37:49,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:37:49,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 01:37:49,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2020-10-27 01:37:49,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 01:37:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-27 01:37:49,720 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 49 [2020-10-27 01:37:49,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:49,720 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-27 01:37:49,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:37:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-27 01:37:49,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 01:37:49,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:49,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:49,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 01:37:49,722 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:49,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1208129722, now seen corresponding path program 1 times [2020-10-27 01:37:49,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:49,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076938007] [2020-10-27 01:37:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:49,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:50,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:50,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:51,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:51,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:51,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:54,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:54,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 01:37:54,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 01:37:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 01:37:54,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 01:37:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 01:37:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:54,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:54,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:54,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:54,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:54,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:37:54,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:54,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:54,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:54,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076938007] [2020-10-27 01:37:54,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:54,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 01:37:54,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937608240] [2020-10-27 01:37:54,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 01:37:54,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:54,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 01:37:54,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:37:54,939 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 14 states. [2020-10-27 01:37:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:55,595 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-10-27 01:37:55,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 01:37:55,596 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-27 01:37:55,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:55,596 INFO L225 Difference]: With dead ends: 57 [2020-10-27 01:37:55,597 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 01:37:55,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-10-27 01:37:55,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 01:37:55,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-27 01:37:55,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 01:37:55,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-10-27 01:37:55,602 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 49 [2020-10-27 01:37:55,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:55,602 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-10-27 01:37:55,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 01:37:55,602 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-10-27 01:37:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 01:37:55,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:55,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:55,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 01:37:55,604 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:55,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:55,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1216097734, now seen corresponding path program 1 times [2020-10-27 01:37:55,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:55,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247253200] [2020-10-27 01:37:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:55,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:55,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:55,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:56,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:56,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:58,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:58,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 01:37:58,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 01:37:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2543 [2020-10-27 01:37:58,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 01:37:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:37:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 01:37:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:58,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:37:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:58,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:37:58,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:37:58,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:37:58,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 01:37:58,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:37:58,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:37:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:37:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:37:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:37:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:37:58,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247253200] [2020-10-27 01:37:58,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:37:58,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:37:58,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587451085] [2020-10-27 01:37:58,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:37:58,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:37:58,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:37:58,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:37:58,397 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 6 states. [2020-10-27 01:37:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:37:58,723 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-10-27 01:37:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:37:58,726 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-27 01:37:58,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:37:58,727 INFO L225 Difference]: With dead ends: 63 [2020-10-27 01:37:58,727 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 01:37:58,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 01:37:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 01:37:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-10-27 01:37:58,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 01:37:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-10-27 01:37:58,734 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2020-10-27 01:37:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:37:58,734 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-10-27 01:37:58,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:37:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-10-27 01:37:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 01:37:58,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:37:58,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:37:58,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 01:37:58,738 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:37:58,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:37:58,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1202737788, now seen corresponding path program 1 times [2020-10-27 01:37:58,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:37:58,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676613514] [2020-10-27 01:37:58,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:37:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:37:58,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:58,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:59,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:59,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:59,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:59,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:59,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:37:59,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:00,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:00,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 01:38:00,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 01:38:00,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2106 [2020-10-27 01:38:00,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 01:38:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:38:00,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 01:38:00,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:38:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:38:01,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:38:01,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:38:01,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:38:01,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:38:01,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 01:38:01,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:38:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:38:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:38:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:38:01,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:38:01,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:38:01,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676613514] [2020-10-27 01:38:01,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:38:01,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 01:38:01,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038013469] [2020-10-27 01:38:01,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 01:38:01,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:38:01,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 01:38:01,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 01:38:01,064 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 6 states. [2020-10-27 01:38:01,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:38:01,314 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-10-27 01:38:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 01:38:01,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-27 01:38:01,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:38:01,315 INFO L225 Difference]: With dead ends: 53 [2020-10-27 01:38:01,315 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:38:01,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:38:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:38:01,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:38:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:38:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:38:01,318 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2020-10-27 01:38:01,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:38:01,319 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:38:01,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 01:38:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:38:01,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:38:01,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 01:38:01,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:38:01,713 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 01:38:01,713 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 01:38:01,713 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 01:38:01,714 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 01:38:01,714 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:38:01,714 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~__return_2598~0 |old(~__return_2598~0)|) (= ~__tmp_3137_1~0 |old(~__tmp_3137_1~0)|) (= |old(#valid)| |#valid|) (= ~__tmp_3137_0~0 |old(~__tmp_3137_0~0)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~__tmp_2624_0~0 |old(~__tmp_2624_0~0)|) (= ~__tmp_2624_1~0 |old(~__tmp_2624_1~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 01:38:01,714 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:38:01,715 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:38:01,715 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:38:01,715 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:38:01,715 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:38:01,715 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:38:01,715 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-27 01:38:01,715 INFO L274 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:38:01,715 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:38:01,715 INFO L274 CegarLoopResult]: For program point L217(lines 217 229) no Hoare annotation was computed. [2020-10-27 01:38:01,716 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 17 1006) no Hoare annotation was computed. [2020-10-27 01:38:01,716 INFO L274 CegarLoopResult]: For program point L597(lines 597 969) no Hoare annotation was computed. [2020-10-27 01:38:01,716 INFO L274 CegarLoopResult]: For program point L366(lines 366 991) no Hoare annotation was computed. [2020-10-27 01:38:01,716 INFO L274 CegarLoopResult]: For program point L267(lines 267 275) no Hoare annotation was computed. [2020-10-27 01:38:01,716 INFO L274 CegarLoopResult]: For program point L581(lines 581 971) no Hoare annotation was computed. [2020-10-27 01:38:01,716 INFO L270 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: false [2020-10-27 01:38:01,716 INFO L274 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-10-27 01:38:01,716 INFO L270 CegarLoopResult]: At program point L895(line 895) the Hoare annotation is: false [2020-10-27 01:38:01,716 INFO L274 CegarLoopResult]: For program point L895-1(line 895) no Hoare annotation was computed. [2020-10-27 01:38:01,716 INFO L274 CegarLoopResult]: For program point L317(lines 317 994) no Hoare annotation was computed. [2020-10-27 01:38:01,717 INFO L270 CegarLoopResult]: At program point L185(line 185) the Hoare annotation is: false [2020-10-27 01:38:01,717 INFO L274 CegarLoopResult]: For program point L185-1(line 185) no Hoare annotation was computed. [2020-10-27 01:38:01,717 INFO L274 CegarLoopResult]: For program point L400(lines 400 424) no Hoare annotation was computed. [2020-10-27 01:38:01,717 INFO L274 CegarLoopResult]: For program point L136(lines 136 242) no Hoare annotation was computed. [2020-10-27 01:38:01,717 INFO L274 CegarLoopResult]: For program point L103(lines 103 125) no Hoare annotation was computed. [2020-10-27 01:38:01,717 INFO L274 CegarLoopResult]: For program point L615(lines 615 626) no Hoare annotation was computed. [2020-10-27 01:38:01,717 INFO L274 CegarLoopResult]: For program point L929(lines 929 941) no Hoare annotation was computed. [2020-10-27 01:38:01,717 INFO L270 CegarLoopResult]: At program point L219(line 219) the Hoare annotation is: false [2020-10-27 01:38:01,717 INFO L274 CegarLoopResult]: For program point L219-1(line 219) no Hoare annotation was computed. [2020-10-27 01:38:01,717 INFO L274 CegarLoopResult]: For program point L665(lines 665 963) no Hoare annotation was computed. [2020-10-27 01:38:01,717 INFO L274 CegarLoopResult]: For program point L434(lines 434 985) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L270 CegarLoopResult]: At program point L269(line 269) the Hoare annotation is: false [2020-10-27 01:38:01,718 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 17 1006) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L274 CegarLoopResult]: For program point L269-1(line 269) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L274 CegarLoopResult]: For program point L649(lines 649 965) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L274 CegarLoopResult]: For program point L385(lines 385 988) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L274 CegarLoopResult]: For program point L22(lines 22 1005) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L274 CegarLoopResult]: For program point L468(lines 468 492) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L274 CegarLoopResult]: For program point L881(lines 881 907) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L274 CegarLoopResult]: For program point L171(lines 171 193) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L274 CegarLoopResult]: For program point L683(lines 683 694) no Hoare annotation was computed. [2020-10-27 01:38:01,718 INFO L270 CegarLoopResult]: At program point L105(line 105) the Hoare annotation is: false [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L72(lines 72 288) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L105-1(line 105) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L270 CegarLoopResult]: At program point L931(line 931) the Hoare annotation is: false [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L931-1(line 931) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L733(lines 733 957) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L155(lines 155 234) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L502(lines 502 979) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L205(lines 205 231) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L717(lines 717 959) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L453(lines 453 982) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L866(lines 866 946) no Hoare annotation was computed. [2020-10-27 01:38:01,719 INFO L274 CegarLoopResult]: For program point L255(lines 255 277) no Hoare annotation was computed. [2020-10-27 01:38:01,720 INFO L274 CegarLoopResult]: For program point L536(lines 536 560) no Hoare annotation was computed. [2020-10-27 01:38:01,720 INFO L270 CegarLoopResult]: At program point L883(line 883) the Hoare annotation is: false [2020-10-27 01:38:01,720 INFO L274 CegarLoopResult]: For program point L883-1(line 883) no Hoare annotation was computed. [2020-10-27 01:38:01,720 INFO L274 CegarLoopResult]: For program point L751(lines 751 762) no Hoare annotation was computed. [2020-10-27 01:38:01,720 INFO L270 CegarLoopResult]: At program point L173(line 173) the Hoare annotation is: false [2020-10-27 01:38:01,720 INFO L274 CegarLoopResult]: For program point L173-1(line 173) no Hoare annotation was computed. [2020-10-27 01:38:01,720 INFO L274 CegarLoopResult]: For program point L801(lines 801 951) no Hoare annotation was computed. [2020-10-27 01:38:01,720 INFO L270 CegarLoopResult]: At program point L157(line 157) the Hoare annotation is: false [2020-10-27 01:38:01,720 INFO L274 CegarLoopResult]: For program point L157-1(line 157) no Hoare annotation was computed. [2020-10-27 01:38:01,721 INFO L274 CegarLoopResult]: For program point L570(lines 570 973) no Hoare annotation was computed. [2020-10-27 01:38:01,721 INFO L274 CegarLoopResult]: For program point L917(lines 917 943) no Hoare annotation was computed. [2020-10-27 01:38:01,721 INFO L274 CegarLoopResult]: For program point L785(lines 785 953) no Hoare annotation was computed. [2020-10-27 01:38:01,721 INFO L270 CegarLoopResult]: At program point L207(line 207) the Hoare annotation is: false [2020-10-27 01:38:01,721 INFO L274 CegarLoopResult]: For program point L207-1(line 207) no Hoare annotation was computed. [2020-10-27 01:38:01,721 INFO L274 CegarLoopResult]: For program point L521(lines 521 976) no Hoare annotation was computed. [2020-10-27 01:38:01,721 INFO L270 CegarLoopResult]: At program point L868(lines 26 1000) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-10-27 01:38:01,721 INFO L270 CegarLoopResult]: At program point L257(line 257) the Hoare annotation is: false [2020-10-27 01:38:01,721 INFO L274 CegarLoopResult]: For program point L257-1(line 257) no Hoare annotation was computed. [2020-10-27 01:38:01,721 INFO L274 CegarLoopResult]: For program point L604(lines 604 628) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L26(lines 26 1000) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L819(lines 819 830) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L638(lines 638 967) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L270 CegarLoopResult]: At program point L919(line 919) the Hoare annotation is: false [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L919-1(line 919) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L853(lines 853 947) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L143(lines 143 236) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L589(lines 589 970) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L325(lines 325 993) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L672(lines 672 696) no Hoare annotation was computed. [2020-10-27 01:38:01,722 INFO L274 CegarLoopResult]: For program point L309(lines 309 995) no Hoare annotation was computed. [2020-10-27 01:38:01,723 INFO L270 CegarLoopResult]: At program point L904(lines 65 999) the Hoare annotation is: (and (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2020-10-27 01:38:01,723 INFO L274 CegarLoopResult]: For program point L706(lines 706 961) no Hoare annotation was computed. [2020-10-27 01:38:01,723 INFO L274 CegarLoopResult]: For program point L343(lines 343 354) no Hoare annotation was computed. [2020-10-27 01:38:01,723 INFO L270 CegarLoopResult]: At program point L145(line 145) the Hoare annotation is: false [2020-10-27 01:38:01,723 INFO L274 CegarLoopResult]: For program point L657(lines 657 964) no Hoare annotation was computed. [2020-10-27 01:38:01,723 INFO L274 CegarLoopResult]: For program point L145-1(line 145) no Hoare annotation was computed. [2020-10-27 01:38:01,723 INFO L274 CegarLoopResult]: For program point L46(lines 46 56) no Hoare annotation was computed. [2020-10-27 01:38:01,723 INFO L270 CegarLoopResult]: At program point L1004(lines 22 1005) the Hoare annotation is: (or (and (= ~__tmp_2624_0~0 |old(~__tmp_2624_0~0)|) (= |old(~__return_2598~0)| ~__return_2598~0) (= ~__tmp_2624_1~0 |old(~__tmp_2624_1~0)|) (= ~__tmp_3137_1~0 |old(~__tmp_3137_1~0)|) (= ~__tmp_3137_0~0 |old(~__tmp_3137_0~0)|)) (<= 0 main_~main__t~0)) [2020-10-27 01:38:01,723 INFO L274 CegarLoopResult]: For program point L393(lines 393 987) no Hoare annotation was computed. [2020-10-27 01:38:01,723 INFO L274 CegarLoopResult]: For program point L740(lines 740 764) no Hoare annotation was computed. [2020-10-27 01:38:01,723 INFO L274 CegarLoopResult]: For program point L96(lines 96 285) no Hoare annotation was computed. [2020-10-27 01:38:01,724 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 17 1006) the Hoare annotation is: (and (= ~__tmp_2624_0~0 |old(~__tmp_2624_0~0)|) (= |old(~__return_2598~0)| ~__return_2598~0) (= ~__tmp_2624_1~0 |old(~__tmp_2624_1~0)|) (= ~__tmp_3137_1~0 |old(~__tmp_3137_1~0)|) (= ~__tmp_3137_0~0 |old(~__tmp_3137_0~0)|)) [2020-10-27 01:38:01,724 INFO L274 CegarLoopResult]: For program point L377(lines 377 989) no Hoare annotation was computed. [2020-10-27 01:38:01,724 INFO L274 CegarLoopResult]: For program point L774(lines 774 955) no Hoare annotation was computed. [2020-10-27 01:38:01,724 INFO L274 CegarLoopResult]: For program point L411(lines 411 422) no Hoare annotation was computed. [2020-10-27 01:38:01,724 INFO L274 CegarLoopResult]: For program point L725(lines 725 958) no Hoare annotation was computed. [2020-10-27 01:38:01,724 INFO L270 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-10-27 01:38:01,724 INFO L274 CegarLoopResult]: For program point L48-1(line 48) no Hoare annotation was computed. [2020-10-27 01:38:01,724 INFO L274 CegarLoopResult]: For program point L461(lines 461 981) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L270 CegarLoopResult]: At program point L940(lines 858 947) the Hoare annotation is: (and (<= 9 main_~main__t~0) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1))) [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L874(lines 874 945) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L808(lines 808 832) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L164(lines 164 233) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L65(lines 65 999) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L445(lines 445 983) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L115(lines 115 123) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L842(lines 842 949) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L132(lines 132 284) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L479(lines 479 490) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L793(lines 793 952) no Hoare annotation was computed. [2020-10-27 01:38:01,725 INFO L274 CegarLoopResult]: For program point L248(lines 248 283) no Hoare annotation was computed. [2020-10-27 01:38:01,726 INFO L274 CegarLoopResult]: For program point L83(lines 83 286) no Hoare annotation was computed. [2020-10-27 01:38:01,726 INFO L274 CegarLoopResult]: For program point L529(lines 529 975) no Hoare annotation was computed. [2020-10-27 01:38:01,726 INFO L274 CegarLoopResult]: For program point L298(lines 298 997) no Hoare annotation was computed. [2020-10-27 01:38:01,726 INFO L274 CegarLoopResult]: For program point L34(lines 34 58) no Hoare annotation was computed. [2020-10-27 01:38:01,726 INFO L274 CegarLoopResult]: For program point L513(lines 513 977) no Hoare annotation was computed. [2020-10-27 01:38:01,726 INFO L274 CegarLoopResult]: For program point L893(lines 893 905) no Hoare annotation was computed. [2020-10-27 01:38:01,726 INFO L270 CegarLoopResult]: At program point L282(lines 132 284) the Hoare annotation is: (and (<= (+ main_~main__t~0 1) main_~main__tagbuf_len~0) (<= 1 main_~main__t~0)) [2020-10-27 01:38:01,726 INFO L274 CegarLoopResult]: For program point L183(lines 183 191) no Hoare annotation was computed. [2020-10-27 01:38:01,726 INFO L270 CegarLoopResult]: At program point L117(line 117) the Hoare annotation is: false [2020-10-27 01:38:01,726 INFO L274 CegarLoopResult]: For program point L117-1(line 117) no Hoare annotation was computed. [2020-10-27 01:38:01,726 INFO L274 CegarLoopResult]: For program point L332(lines 332 356) no Hoare annotation was computed. [2020-10-27 01:38:01,727 INFO L274 CegarLoopResult]: For program point L547(lines 547 558) no Hoare annotation was computed. [2020-10-27 01:38:01,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:38:01 BoogieIcfgContainer [2020-10-27 01:38:01,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:38:01,750 INFO L168 Benchmark]: Toolchain (without parser) took 31693.96 ms. Allocated memory was 125.8 MB in the beginning and 453.0 MB in the end (delta: 327.2 MB). Free memory was 101.1 MB in the beginning and 220.3 MB in the end (delta: -119.2 MB). Peak memory consumption was 208.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:38:01,751 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:38:01,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.79 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 83.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-27 01:38:01,752 INFO L168 Benchmark]: Boogie Preprocessor took 71.51 ms. Allocated memory is still 125.8 MB. Free memory was 83.3 MB in the beginning and 80.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:38:01,753 INFO L168 Benchmark]: RCFGBuilder took 1036.97 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 80.7 MB in the beginning and 90.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:38:01,754 INFO L168 Benchmark]: TraceAbstraction took 30092.05 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 89.9 MB in the beginning and 220.3 MB in the end (delta: -130.4 MB). Peak memory consumption was 172.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:38:01,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 476.79 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 83.3 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.51 ms. Allocated memory is still 125.8 MB. Free memory was 83.3 MB in the beginning and 80.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1036.97 ms. Allocated memory was 125.8 MB in the beginning and 151.0 MB in the end (delta: 25.2 MB). Free memory was 80.7 MB in the beginning and 90.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 30092.05 ms. Allocated memory was 151.0 MB in the beginning and 453.0 MB in the end (delta: 302.0 MB). Free memory was 89.9 MB in the beginning and 220.3 MB in the end (delta: -130.4 MB). Peak memory consumption was 172.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 26]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((__tmp_2624_0 == \old(__tmp_2624_0) && \old(__return_2598) == __return_2598) && __tmp_2624_1 == \old(__tmp_2624_1)) && __tmp_3137_1 == \old(__tmp_3137_1)) && __tmp_3137_0 == \old(__tmp_3137_0)) || 0 <= main__t - InvariantResult [Line: 858]: Loop Invariant Derived loop invariant: 9 <= main__t && main__t < main__tagbuf_len + 1 - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: main__t + 1 <= main__tagbuf_len && 1 <= main__t - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 133 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.5s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 666 SDtfs, 2702 SDslu, 709 SDs, 0 SdLazy, 3359 SolverSat, 686 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 81 SyntacticMatches, 8 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 76 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 41 PreInvPairs, 45 NumberOfFragments, 136 HoareAnnotationTreeSize, 41 FomulaSimplifications, 908 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 26 FomulaSimplificationsInter, 196 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 20.6s InterpolantComputationTime, 412 NumberOfCodeBlocks, 412 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 396 ConstructedInterpolants, 0 QuantifiedInterpolants, 55930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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...