/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:24:14,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:24:14,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:24:14,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:24:14,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:24:14,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:24:14,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:24:14,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:24:14,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:24:14,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:24:14,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:24:14,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:24:14,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:24:14,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:24:14,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:24:14,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:24:14,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:24:14,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:24:14,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:24:14,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:24:14,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:24:14,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:24:14,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:24:14,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:24:14,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:24:14,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:24:14,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:24:14,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:24:14,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:24:14,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:24:14,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:24:14,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:24:14,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:24:14,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:24:14,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:24:14,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:24:14,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:24:14,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:24:14,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:24:14,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:24:14,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:24:14,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 09:24:14,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:24:14,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:24:14,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:24:14,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:24:14,593 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:24:14,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:24:14,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:24:14,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:24:14,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:24:14,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:24:14,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:24:14,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:24:14,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:24:14,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:24:14,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:24:14,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:24:14,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:24:14,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:24:14,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:24:14,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:24:14,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:24:14,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:24:14,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:24:14,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:24:14,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:24:14,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:24:14,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:24:14,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:24:14,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:24:14,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:24:15,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:24:15,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:24:15,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:24:15,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:24:15,067 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:24:15,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2020-10-28 09:24:15,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce566e23d/74698841a8884ec39cd4df1af9463872/FLAG90909f750 [2020-10-28 09:24:15,831 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:24:15,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/flag_loopdep.i [2020-10-28 09:24:15,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce566e23d/74698841a8884ec39cd4df1af9463872/FLAG90909f750 [2020-10-28 09:24:16,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ce566e23d/74698841a8884ec39cd4df1af9463872 [2020-10-28 09:24:16,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:24:16,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:24:16,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:24:16,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:24:16,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:24:16,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:24:16" (1/1) ... [2020-10-28 09:24:16,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29aae8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16, skipping insertion in model container [2020-10-28 09:24:16,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:24:16" (1/1) ... [2020-10-28 09:24:16,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:24:16,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:24:16,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:24:16,453 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:24:16,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:24:16,498 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:24:16,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16 WrapperNode [2020-10-28 09:24:16,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:24:16,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:24:16,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:24:16,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:24:16,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16" (1/1) ... [2020-10-28 09:24:16,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16" (1/1) ... [2020-10-28 09:24:16,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16" (1/1) ... [2020-10-28 09:24:16,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16" (1/1) ... [2020-10-28 09:24:16,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16" (1/1) ... [2020-10-28 09:24:16,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16" (1/1) ... [2020-10-28 09:24:16,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16" (1/1) ... [2020-10-28 09:24:16,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:24:16,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:24:16,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:24:16,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:24:16,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:24:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:24:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:24:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:24:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:24:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 09:24:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:24:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:24:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:24:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:24:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:24:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:24:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:24:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:24:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:24:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_pointer [2020-10-28 09:24:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 09:24:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:24:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 09:24:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:24:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 09:24:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:24:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:24:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:24:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:24:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:24:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:24:16,978 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:24:16,979 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:24:16,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:24:16 BoogieIcfgContainer [2020-10-28 09:24:16,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:24:17,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:24:17,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:24:17,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:24:17,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:24:16" (1/3) ... [2020-10-28 09:24:17,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79261e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:24:17, skipping insertion in model container [2020-10-28 09:24:17,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:24:16" (2/3) ... [2020-10-28 09:24:17,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79261e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:24:17, skipping insertion in model container [2020-10-28 09:24:17,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:24:16" (3/3) ... [2020-10-28 09:24:17,029 INFO L111 eAbstractionObserver]: Analyzing ICFG flag_loopdep.i [2020-10-28 09:24:17,042 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:24:17,048 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:24:17,064 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:24:17,096 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:24:17,096 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:24:17,097 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:24:17,097 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:24:17,097 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:24:17,097 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:24:17,097 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:24:17,097 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:24:17,118 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-28 09:24:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:24:17,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:17,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:17,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:17,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1917384497, now seen corresponding path program 1 times [2020-10-28 09:24:17,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:17,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358967990] [2020-10-28 09:24:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:24:17,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:17,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-28 09:24:17,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:17,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 09:24:17,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:17,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 09:24:17,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:17,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 09:24:17,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:17,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:17,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:17,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:17,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:24:17,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 09:24:17,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:17,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:24:17,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358967990] [2020-10-28 09:24:17,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:24:17,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:24:17,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144269486] [2020-10-28 09:24:18,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:24:18,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:18,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:24:18,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:24:18,031 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-10-28 09:24:18,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:18,261 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2020-10-28 09:24:18,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:24:18,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-28 09:24:18,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:18,274 INFO L225 Difference]: With dead ends: 66 [2020-10-28 09:24:18,275 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 09:24:18,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:24:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 09:24:18,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-28 09:24:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 09:24:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-28 09:24:18,332 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2020-10-28 09:24:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:18,332 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-28 09:24:18,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:24:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-28 09:24:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:24:18,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:18,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:18,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:24:18,335 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:18,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:18,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1115967253, now seen corresponding path program 1 times [2020-10-28 09:24:18,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:18,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422560657] [2020-10-28 09:24:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:18,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:18,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 09:24:18,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:18,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-28 09:24:18,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:18,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:18,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:24:18,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:24:18,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:24:18,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:18,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:18,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:18,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:18,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:18,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:18,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:24:18,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:18,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:18,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:18,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:18,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:24:18,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:18,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:24:18,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:18,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:24:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:24:18,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:24:18,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:24:18,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422560657] [2020-10-28 09:24:18,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:24:18,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 09:24:18,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447215033] [2020-10-28 09:24:18,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:24:18,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:18,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:24:18,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:24:18,867 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-10-28 09:24:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:19,196 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 09:24:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:24:19,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-28 09:24:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:19,198 INFO L225 Difference]: With dead ends: 52 [2020-10-28 09:24:19,199 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 09:24:19,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:24:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 09:24:19,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-28 09:24:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 09:24:19,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-28 09:24:19,210 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 22 [2020-10-28 09:24:19,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:19,211 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-28 09:24:19,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:24:19,211 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-28 09:24:19,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 09:24:19,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:19,212 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] [2020-10-28 09:24:19,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:24:19,213 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:19,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:19,214 INFO L82 PathProgramCache]: Analyzing trace with hash -891180873, now seen corresponding path program 1 times [2020-10-28 09:24:19,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:19,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375828821] [2020-10-28 09:24:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:19,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:19,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 09:24:19,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:19,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-28 09:24:19,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:19,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:24:19,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:19,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:19,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:19,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:19,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:19,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:19,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:19,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:19,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:19,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:19,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:19,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:19,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:19,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:24:19,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 09:24:19,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:19,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:24:19,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375828821] [2020-10-28 09:24:19,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:24:19,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:24:19,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048431458] [2020-10-28 09:24:19,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:24:19,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:19,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:24:19,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:24:19,661 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-28 09:24:19,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:19,882 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-28 09:24:19,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:24:19,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-28 09:24:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:19,885 INFO L225 Difference]: With dead ends: 53 [2020-10-28 09:24:19,885 INFO L226 Difference]: Without dead ends: 39 [2020-10-28 09:24:19,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:24:19,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-28 09:24:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-10-28 09:24:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 09:24:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 09:24:19,898 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 24 [2020-10-28 09:24:19,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:19,899 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 09:24:19,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:24:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 09:24:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:24:19,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:19,900 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] [2020-10-28 09:24:19,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:24:19,901 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:19,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:19,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1127573143, now seen corresponding path program 1 times [2020-10-28 09:24:19,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:19,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810818867] [2020-10-28 09:24:19,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:20,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:20,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:24:20,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:24:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-10-28 09:24:20,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:20,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 09:24:20,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:24:20,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:20,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:20,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:20,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:20,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:20,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:20,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:20,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:20,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:20,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:20,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:20,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:24:20,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 09:24:20,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:20,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:20,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:24:20,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810818867] [2020-10-28 09:24:20,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:24:20,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:24:20,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511916917] [2020-10-28 09:24:20,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:24:20,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:20,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:24:20,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:24:20,752 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-28 09:24:20,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:20,940 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 09:24:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:24:20,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-28 09:24:20,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:20,942 INFO L225 Difference]: With dead ends: 52 [2020-10-28 09:24:20,942 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 09:24:20,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:24:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 09:24:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-28 09:24:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 09:24:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-10-28 09:24:20,950 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-10-28 09:24:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:20,951 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-10-28 09:24:20,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:24:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-10-28 09:24:20,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:24:20,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:20,952 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] [2020-10-28 09:24:20,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:24:20,953 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:20,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:20,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1385738581, now seen corresponding path program 1 times [2020-10-28 09:24:20,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:20,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496688210] [2020-10-28 09:24:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:20,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:21,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:22,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:22,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:24:22,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:24:22,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1888 [2020-10-28 09:24:22,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:22,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:24:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:24:22,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:24:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:22,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:22,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:22,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:22,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:22,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:22,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:22,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:22,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:22,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:22,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:22,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:22,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:22,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:22,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 09:24:22,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 09:24:22,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:22,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:24:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:24:22,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:24:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:24:23,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496688210] [2020-10-28 09:24:23,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:23,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:24:23,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794035383] [2020-10-28 09:24:23,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:24:23,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:23,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:24:23,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:24:23,040 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 7 states. [2020-10-28 09:24:23,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:23,319 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-10-28 09:24:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:24:23,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-10-28 09:24:23,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:23,321 INFO L225 Difference]: With dead ends: 56 [2020-10-28 09:24:23,321 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 09:24:23,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:24:23,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 09:24:23,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-28 09:24:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 09:24:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-28 09:24:23,329 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 27 [2020-10-28 09:24:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:23,329 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-28 09:24:23,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:24:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-28 09:24:23,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:24:23,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:23,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:23,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:24:23,331 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:23,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1880886515, now seen corresponding path program 2 times [2020-10-28 09:24:23,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:23,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715690122] [2020-10-28 09:24:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:27,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:27,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 09:24:27,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:24:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4411 [2020-10-28 09:24:27,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:27,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:24:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 09:24:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:27,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:27,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:27,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:27,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:27,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:27,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:27,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:27,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:27,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:27,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:27,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:27,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:27,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:27,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 09:24:27,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 09:24:27,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:27,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:24:27,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715690122] [2020-10-28 09:24:27,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:27,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:24:27,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722162236] [2020-10-28 09:24:27,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:24:27,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:27,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:24:27,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:24:27,913 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2020-10-28 09:24:28,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:28,162 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2020-10-28 09:24:28,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:24:28,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-28 09:24:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:28,164 INFO L225 Difference]: With dead ends: 63 [2020-10-28 09:24:28,164 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 09:24:28,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:24:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 09:24:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2020-10-28 09:24:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 09:24:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-28 09:24:28,178 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 29 [2020-10-28 09:24:28,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:28,178 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-28 09:24:28,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:24:28,178 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-28 09:24:28,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:24:28,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:28,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:28,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:24:28,182 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:28,184 INFO L82 PathProgramCache]: Analyzing trace with hash 414127001, now seen corresponding path program 3 times [2020-10-28 09:24:28,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:28,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122450135] [2020-10-28 09:24:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:33,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:33,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:24:33,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:24:33,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:24:33,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:33,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:24:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:24:33,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:24:33,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:33,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:33,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:33,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:33,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:33,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:33,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:24:33,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:33,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:33,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:33,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:33,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:33,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:33,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 09:24:33,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:33,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 09:24:33,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:33,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:24:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:24:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:24:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 09:24:33,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122450135] [2020-10-28 09:24:33,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:33,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:24:33,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056432166] [2020-10-28 09:24:33,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:24:33,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:33,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:24:33,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:24:33,414 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 8 states. [2020-10-28 09:24:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:33,639 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-28 09:24:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:24:33,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-28 09:24:33,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:33,641 INFO L225 Difference]: With dead ends: 64 [2020-10-28 09:24:33,642 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 09:24:33,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:24:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 09:24:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-28 09:24:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-28 09:24:33,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-28 09:24:33,654 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-10-28 09:24:33,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:33,657 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-28 09:24:33,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:24:33,657 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-28 09:24:33,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 09:24:33,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:33,658 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:33,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:24:33,659 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:33,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1269451451, now seen corresponding path program 4 times [2020-10-28 09:24:33,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:33,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357906525] [2020-10-28 09:24:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:33,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:33,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:33,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:33,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:38,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:38,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 09:24:38,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:24:38,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:24:38,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:38,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:24:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:24:38,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:24:38,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:38,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:38,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:38,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:38,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:38,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:38,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:38,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:38,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:38,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:38,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:38,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:38,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:38,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 09:24:38,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:38,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 09:24:38,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:38,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:38,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:24:38,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:24:38,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:24:38,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 09:24:38,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357906525] [2020-10-28 09:24:38,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:38,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:24:38,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620225091] [2020-10-28 09:24:38,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:24:38,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:38,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:24:38,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:24:38,986 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 9 states. [2020-10-28 09:24:39,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:39,225 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-28 09:24:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:24:39,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-28 09:24:39,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:39,227 INFO L225 Difference]: With dead ends: 66 [2020-10-28 09:24:39,227 INFO L226 Difference]: Without dead ends: 42 [2020-10-28 09:24:39,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:24:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-28 09:24:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-28 09:24:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 09:24:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-28 09:24:39,235 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 34 [2020-10-28 09:24:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:39,235 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-28 09:24:39,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:24:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-28 09:24:39,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-28 09:24:39,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:39,236 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:39,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:24:39,237 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:39,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:39,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1397472931, now seen corresponding path program 5 times [2020-10-28 09:24:39,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:39,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748245767] [2020-10-28 09:24:39,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:39,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:39,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:39,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:39,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:40,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:44,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-28 09:24:44,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:24:44,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:24:44,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:44,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:24:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 09:24:44,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:24:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:44,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:44,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:44,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:44,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:44,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:44,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:44,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:44,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:44,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 09:24:44,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 09:24:44,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:44,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:44,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:44,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 09:24:44,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748245767] [2020-10-28 09:24:44,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:44,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:24:44,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116756466] [2020-10-28 09:24:44,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:24:44,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:44,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:24:44,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:24:44,463 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 7 states. [2020-10-28 09:24:44,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:44,648 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-10-28 09:24:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:24:44,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-28 09:24:44,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:44,650 INFO L225 Difference]: With dead ends: 75 [2020-10-28 09:24:44,650 INFO L226 Difference]: Without dead ends: 61 [2020-10-28 09:24:44,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:24:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-28 09:24:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2020-10-28 09:24:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-28 09:24:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-28 09:24:44,662 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 36 [2020-10-28 09:24:44,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:44,663 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-28 09:24:44,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:24:44,663 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-28 09:24:44,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 09:24:44,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:44,664 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:44,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:24:44,664 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:44,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:44,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1930785041, now seen corresponding path program 6 times [2020-10-28 09:24:44,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:44,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310985349] [2020-10-28 09:24:44,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:44,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:49,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:49,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 09:24:49,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:24:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:24:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:49,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:24:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 09:24:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:24:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:49,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:49,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:49,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:49,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:49,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:49,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:49,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:49,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:49,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:49,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 09:24:49,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 09:24:49,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:49,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-28 09:24:49,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310985349] [2020-10-28 09:24:49,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:49,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:24:49,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660490970] [2020-10-28 09:24:49,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:24:49,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:49,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:24:49,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:24:49,977 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 11 states. [2020-10-28 09:24:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:50,452 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-10-28 09:24:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:24:50,453 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-28 09:24:50,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:50,454 INFO L225 Difference]: With dead ends: 57 [2020-10-28 09:24:50,454 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 09:24:50,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:24:50,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 09:24:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-28 09:24:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 09:24:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-28 09:24:50,468 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 39 [2020-10-28 09:24:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:50,468 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-28 09:24:50,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:24:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-28 09:24:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 09:24:50,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:50,471 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:50,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:24:50,471 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:50,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:50,472 INFO L82 PathProgramCache]: Analyzing trace with hash 950498006, now seen corresponding path program 1 times [2020-10-28 09:24:50,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:50,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712063480] [2020-10-28 09:24:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:50,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:50,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:50,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:50,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:50,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:54,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:55,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 09:24:55,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:24:55,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:24:55,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:55,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:55,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:24:55,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:55,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:55,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:55,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:55,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:55,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:55,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:55,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:55,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:55,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:24:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:55,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:55,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 09:24:55,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 09:24:55,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:55,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:24:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 09:24:55,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712063480] [2020-10-28 09:24:55,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:24:55,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:24:55,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290072896] [2020-10-28 09:24:55,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:24:55,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:55,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:24:55,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:24:55,659 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2020-10-28 09:24:55,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:55,773 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-10-28 09:24:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:24:55,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-28 09:24:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:55,774 INFO L225 Difference]: With dead ends: 64 [2020-10-28 09:24:55,774 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 09:24:55,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:24:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 09:24:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-28 09:24:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 09:24:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-28 09:24:55,782 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 42 [2020-10-28 09:24:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:55,782 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-28 09:24:55,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:24:55,782 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-28 09:24:55,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-28 09:24:55,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:55,783 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:55,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:24:55,784 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:55,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:55,784 INFO L82 PathProgramCache]: Analyzing trace with hash -137887742, now seen corresponding path program 1 times [2020-10-28 09:24:55,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:55,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723135943] [2020-10-28 09:24:55,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:55,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:56,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:00,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:00,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 09:25:00,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:25:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:25:00,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:00,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:25:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:25:00,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 09:25:00,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:00,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:00,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:00,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:00,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:00,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:00,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:25:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:00,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:00,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:00,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 09:25:00,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:00,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 09:25:00,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:00,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:25:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:25:00,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:25:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:25:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:01,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:01,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:01,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:01,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:01,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:01,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:01,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:01,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 09:25:01,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723135943] [2020-10-28 09:25:01,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:01,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:25:01,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958475644] [2020-10-28 09:25:01,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:25:01,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:01,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:25:01,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:25:01,021 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 10 states. [2020-10-28 09:25:01,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:01,274 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2020-10-28 09:25:01,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:25:01,275 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2020-10-28 09:25:01,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:01,276 INFO L225 Difference]: With dead ends: 88 [2020-10-28 09:25:01,276 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 09:25:01,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:25:01,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 09:25:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-28 09:25:01,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 09:25:01,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-28 09:25:01,288 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 48 [2020-10-28 09:25:01,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:01,289 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-28 09:25:01,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:25:01,289 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-28 09:25:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 09:25:01,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:01,290 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:01,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:25:01,290 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:01,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:01,291 INFO L82 PathProgramCache]: Analyzing trace with hash 168080164, now seen corresponding path program 2 times [2020-10-28 09:25:01,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:01,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326221190] [2020-10-28 09:25:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:01,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:06,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 09:25:06,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:25:06,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:25:06,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:06,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:25:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:25:06,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:25:06,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:06,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:06,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:06,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:06,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:06,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:06,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:06,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:25:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:06,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:06,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 09:25:06,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:06,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 09:25:06,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:06,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:06,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:25:06,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:25:06,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 09:25:06,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:06,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-28 09:25:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:06,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:06,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:06,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:06,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:06,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:06,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 09:25:06,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326221190] [2020-10-28 09:25:06,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:06,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:25:06,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272442286] [2020-10-28 09:25:06,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:25:06,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:06,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:25:06,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:25:06,548 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 11 states. [2020-10-28 09:25:06,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:06,827 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2020-10-28 09:25:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:25:06,828 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-28 09:25:06,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:06,829 INFO L225 Difference]: With dead ends: 90 [2020-10-28 09:25:06,829 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 09:25:06,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:25:06,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 09:25:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-28 09:25:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 09:25:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-28 09:25:06,840 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 50 [2020-10-28 09:25:06,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:06,840 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-28 09:25:06,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:25:06,840 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-28 09:25:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-28 09:25:06,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:06,842 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:06,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:25:06,842 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:06,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:06,842 INFO L82 PathProgramCache]: Analyzing trace with hash 2145461702, now seen corresponding path program 3 times [2020-10-28 09:25:06,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:06,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639631359] [2020-10-28 09:25:06,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:07,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:07,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:11,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:11,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 09:25:11,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:25:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:25:11,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:11,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:25:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 09:25:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:25:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:11,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:11,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:11,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:11,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:11,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:11,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:25:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:11,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:12,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 09:25:12,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:25:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 09:25:12,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:12,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:12,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:12,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:12,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:12,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:12,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-28 09:25:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:12,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:12,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:12,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:12,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:12,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:12,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:12,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:12,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:12,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-28 09:25:12,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639631359] [2020-10-28 09:25:12,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:12,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:25:12,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070995154] [2020-10-28 09:25:12,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:25:12,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:12,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:25:12,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:25:12,043 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 8 states. [2020-10-28 09:25:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:12,257 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2020-10-28 09:25:12,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:25:12,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-28 09:25:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:12,259 INFO L225 Difference]: With dead ends: 98 [2020-10-28 09:25:12,259 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 09:25:12,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:25:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 09:25:12,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2020-10-28 09:25:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 09:25:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-28 09:25:12,272 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 52 [2020-10-28 09:25:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:12,272 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-28 09:25:12,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:25:12,272 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-28 09:25:12,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 09:25:12,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:12,273 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:12,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:25:12,274 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:12,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:12,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1927391664, now seen corresponding path program 4 times [2020-10-28 09:25:12,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:12,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222291226] [2020-10-28 09:25:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:12,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:13,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:13,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:17,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:17,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 09:25:17,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:25:17,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:25:17,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:17,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:25:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:25:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:25:17,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:17,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:17,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:17,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:17,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:17,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:25:17,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:17,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:17,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 09:25:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:17,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:17,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:17,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 09:25:17,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:25:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 09:25:17,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:17,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:25:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 09:25:17,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:17,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:25:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:17,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:17,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:17,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:25:17,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:17,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:25:17,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:17,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:25:17,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:17,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 09:25:17,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222291226] [2020-10-28 09:25:17,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:17,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:25:17,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312160430] [2020-10-28 09:25:17,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:25:17,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:17,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:25:17,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:25:17,797 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 12 states. [2020-10-28 09:25:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:18,149 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-28 09:25:18,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:25:18,149 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-28 09:25:18,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:18,150 INFO L225 Difference]: With dead ends: 58 [2020-10-28 09:25:18,150 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 09:25:18,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:25:18,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 09:25:18,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 09:25:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 09:25:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 09:25:18,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-10-28 09:25:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:18,152 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 09:25:18,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:25:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 09:25:18,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 09:25:18,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:25:18,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 09:25:18,413 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-10-28 09:25:18,596 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-28 09:25:18,596 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-28 09:25:18,596 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-28 09:25:18,597 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-28 09:25:18,597 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-28 09:25:18,597 INFO L274 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-10-28 09:25:18,597 INFO L270 CegarLoopResult]: At program point L23-3(lines 23 26) the Hoare annotation is: (let ((.cse0 (= init_~a.offset |init_#in~a.offset|)) (.cse3 (<= |init_#in~size| init_~size)) (.cse5 (= init_~a.base |init_#in~a.base|)) (.cse4 (<= init_~size |init_#in~size|))) (or (let ((.cse1 (* 4 init_~i~0)) (.cse2 (* 4 init_~size))) (and .cse0 (<= .cse1 .cse2) .cse3 (or (< .cse1 .cse2) (not (= (select (select |#memory_$Pointer$.base| |init_#in~a.base|) (+ (* |init_#in~size| 4) |init_#in~a.offset| (- 4))) 0))) .cse4 .cse5)) (and .cse0 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (<= (+ |init_#in~size| init_~i~0) init_~size) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) .cse3 .cse5 .cse4 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)))) [2020-10-28 09:25:18,597 INFO L274 CegarLoopResult]: For program point L23-4(lines 20 27) no Hoare annotation was computed. [2020-10-28 09:25:18,597 INFO L270 CegarLoopResult]: At program point initENTRY(lines 20 27) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-28 09:25:18,597 INFO L274 CegarLoopResult]: For program point initEXIT(lines 20 27) no Hoare annotation was computed. [2020-10-28 09:25:18,598 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 09:25:18,598 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |old(#t~string1.offset)| |#t~string1.offset|) (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-28 09:25:18,598 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 09:25:18,598 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 09:25:18,598 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 09:25:18,598 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 09:25:18,598 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 09:25:18,598 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 41) no Hoare annotation was computed. [2020-10-28 09:25:18,599 INFO L270 CegarLoopResult]: At program point L35-3(lines 35 41) the Hoare annotation is: (let ((.cse2 (select |#memory_$Pointer$.base| |main_~#a~0.base|))) (let ((.cse0 (not (= (select .cse2 (+ |main_~#a~0.offset| 3999996)) 0))) (.cse1 (= main_~flag~0 0))) (or (<= 1 main_~flag~0) (and .cse0 .cse1 (<= 0 main_~i~1) (<= main_~i~1 0)) (and (= (select (select |#memory_$Pointer$.offset| |main_~#a~0.base|) |main_~#a~0.offset|) 0) .cse0 .cse1 (<= main_~i~1 999999) (= (select .cse2 |main_~#a~0.offset|) 0))))) [2020-10-28 09:25:18,599 INFO L274 CegarLoopResult]: For program point L35-4(lines 35 41) no Hoare annotation was computed. [2020-10-28 09:25:18,599 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 28 48) no Hoare annotation was computed. [2020-10-28 09:25:18,599 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 28 48) no Hoare annotation was computed. [2020-10-28 09:25:18,599 INFO L274 CegarLoopResult]: For program point L44(lines 44 45) no Hoare annotation was computed. [2020-10-28 09:25:18,599 INFO L274 CegarLoopResult]: For program point L42-2(lines 42 46) no Hoare annotation was computed. [2020-10-28 09:25:18,599 INFO L270 CegarLoopResult]: At program point L42-3(lines 42 46) the Hoare annotation is: (<= 1 main_~flag~0) [2020-10-28 09:25:18,599 INFO L274 CegarLoopResult]: For program point L42-4(lines 42 46) no Hoare annotation was computed. [2020-10-28 09:25:18,599 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (= main_~flag~0 0) [2020-10-28 09:25:18,599 INFO L274 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-10-28 09:25:18,600 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 28 48) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-28 09:25:18,600 INFO L270 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: false [2020-10-28 09:25:18,600 INFO L274 CegarLoopResult]: For program point L45-1(line 45) no Hoare annotation was computed. [2020-10-28 09:25:18,600 INFO L274 CegarLoopResult]: For program point L37(lines 37 40) no Hoare annotation was computed. [2020-10-28 09:25:18,600 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true [2020-10-28 09:25:18,600 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-10-28 09:25:18,600 INFO L277 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: true [2020-10-28 09:25:18,600 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-10-28 09:25:18,600 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2020-10-28 09:25:18,600 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-10-28 09:25:18,614 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,615 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,616 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,616 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,616 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,618 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,619 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,619 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,619 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-28 09:25:18,619 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-28 09:25:18,619 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 09:25:18,620 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 09:25:18,620 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,620 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,624 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,624 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,624 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,625 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,625 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-28 09:25:18,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-28 09:25:18,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 09:25:18,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 09:25:18,627 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,627 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,629 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,629 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,629 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,629 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,631 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,631 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,631 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,632 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:25:18 BoogieIcfgContainer [2020-10-28 09:25:18,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 09:25:18,637 INFO L168 Benchmark]: Toolchain (without parser) took 62430.67 ms. Allocated memory was 152.0 MB in the beginning and 704.6 MB in the end (delta: 552.6 MB). Free memory was 126.8 MB in the beginning and 475.9 MB in the end (delta: -349.0 MB). Peak memory consumption was 204.3 MB. Max. memory is 8.0 GB. [2020-10-28 09:25:18,637 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 152.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 09:25:18,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.30 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 116.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 09:25:18,639 INFO L168 Benchmark]: Boogie Preprocessor took 46.17 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 114.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 09:25:18,639 INFO L168 Benchmark]: RCFGBuilder took 434.73 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 97.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-28 09:25:18,640 INFO L168 Benchmark]: TraceAbstraction took 61613.72 ms. Allocated memory was 152.0 MB in the beginning and 704.6 MB in the end (delta: 552.6 MB). Free memory was 134.1 MB in the beginning and 475.9 MB in the end (delta: -341.7 MB). Peak memory consumption was 210.7 MB. Max. memory is 8.0 GB. [2020-10-28 09:25:18,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 152.0 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.30 ms. Allocated memory is still 152.0 MB. Free memory was 126.2 MB in the beginning and 116.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.17 ms. Allocated memory is still 152.0 MB. Free memory was 116.4 MB in the beginning and 114.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 434.73 ms. Allocated memory is still 152.0 MB. Free memory was 114.7 MB in the beginning and 97.6 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 61613.72 ms. Allocated memory was 152.0 MB in the beginning and 704.6 MB in the end (delta: 552.6 MB). Free memory was 134.1 MB in the beginning and 475.9 MB in the end (delta: -341.7 MB). Peak memory consumption was 210.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_$Pointer$ * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 23]: Loop Invariant [2020-10-28 09:25:18,652 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,653 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,653 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,653 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,653 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,654 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,654 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,654 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,654 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-28 09:25:18,654 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-28 09:25:18,654 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 09:25:18,655 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 09:25:18,655 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,655 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,656 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,656 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,656 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,656 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,657 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,657 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-28 09:25:18,660 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-28 09:25:18,660 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 09:25:18,660 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 09:25:18,662 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,662 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: (((((a == a && 4 * i <= 4 * size) && \old(size) <= size) && (4 * i < 4 * size || !(#memory_$Pointer$[a][\old(size) * 4 + a + -4] == 0))) && size <= \old(size)) && a == a) || (((((((((a == a && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(size) + i <= size) && \old(unknown-#length-unknown) == unknown-#length-unknown) && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown)) && \old(size) <= size) && a == a) && size <= \old(size)) && #memory_$Pointer$ == \old(#memory_$Pointer$)) && \old(\valid) == \valid) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 <= flag - InvariantResult [Line: 35]: Loop Invariant [2020-10-28 09:25:18,663 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,663 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,663 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,664 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,664 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,666 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,666 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,666 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,667 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,668 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2020-10-28 09:25:18,669 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,669 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2020-10-28 09:25:18,669 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,669 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,670 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ [2020-10-28 09:25:18,670 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_$Pointer$ Derived loop invariant: (1 <= flag || (((!(#memory_$Pointer$[a][a + 3999996] == 0) && flag == 0) && 0 <= i) && i <= 0)) || ((((#memory_$Pointer$[a][a] == 0 && !(#memory_$Pointer$[a][a + 3999996] == 0)) && flag == 0) && i <= 999999) && #memory_$Pointer$[a][a] == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 61.0s, OverallIterations: 15, TraceHistogramMax: 6, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 405 SDtfs, 335 SDslu, 1041 SDs, 0 SdLazy, 1211 SolverSat, 179 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=14, 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, 15 MinimizatonAttempts, 66 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 61 PreInvPairs, 74 NumberOfFragments, 199 HoareAnnotationTreeSize, 61 FomulaSimplifications, 387 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 13 FomulaSimplificationsInter, 81 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 56.3s InterpolantComputationTime, 539 NumberOfCodeBlocks, 539 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 524 ConstructedInterpolants, 0 QuantifiedInterpolants, 80061 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 204/303 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...