/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:43:21,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:43:21,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:43:21,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:43:21,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:43:21,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:43:21,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:43:21,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:43:21,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:43:21,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:43:21,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:43:21,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:43:21,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:43:21,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:43:21,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:43:21,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:43:21,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:43:21,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:43:21,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:43:21,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:43:21,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:43:21,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:43:21,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:43:21,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:43:21,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:43:21,422 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:43:21,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:43:21,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:43:21,424 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:43:21,425 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:43:21,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:43:21,426 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:43:21,427 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:43:21,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:43:21,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:43:21,429 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:43:21,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:43:21,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:43:21,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:43:21,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:43:21,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:43:21,434 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 [2020-10-29 09:43:21,481 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:43:21,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:43:21,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:43:21,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:43:21,487 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:43:21,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:43:21,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:43:21,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:43:21,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:43:21,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:43:21,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:43:21,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:43:21,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:43:21,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:43:21,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:43:21,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:43:21,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:43:21,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:43:21,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:43:21,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:43:21,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:43:21,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:43:21,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:43:21,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:43:21,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:43:21,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:43:21,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:43:21,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:43:21,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:43:21,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:43:21,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:43:21,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:43:21,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:43:21,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:43:21,980 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:43:21,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-10-29 09:43:22,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/206ec6715/264b2b014a4b4684bc135275358bf1a1/FLAG4b6721ca4 [2020-10-29 09:43:22,739 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:43:22,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-10-29 09:43:22,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/206ec6715/264b2b014a4b4684bc135275358bf1a1/FLAG4b6721ca4 [2020-10-29 09:43:23,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/206ec6715/264b2b014a4b4684bc135275358bf1a1 [2020-10-29 09:43:23,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:43:23,104 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:43:23,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:43:23,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:43:23,111 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:43:23,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:43:23" (1/1) ... [2020-10-29 09:43:23,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff3e649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23, skipping insertion in model container [2020-10-29 09:43:23,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:43:23" (1/1) ... [2020-10-29 09:43:23,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:43:23,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:43:23,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:43:23,319 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:43:23,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:43:23,353 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:43:23,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23 WrapperNode [2020-10-29 09:43:23,354 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:43:23,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:43:23,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:43:23,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:43:23,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23" (1/1) ... [2020-10-29 09:43:23,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23" (1/1) ... [2020-10-29 09:43:23,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23" (1/1) ... [2020-10-29 09:43:23,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23" (1/1) ... [2020-10-29 09:43:23,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23" (1/1) ... [2020-10-29 09:43:23,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23" (1/1) ... [2020-10-29 09:43:23,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23" (1/1) ... [2020-10-29 09:43:23,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:43:23,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:43:23,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:43:23,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:43:23,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23" (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 [2020-10-29 09:43:23,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:43:23,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:43:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:43:23,478 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:43:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:43:23,479 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:43:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:43:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:43:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:43:23,479 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:43:23,480 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:43:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:43:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:43:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:43:23,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:43:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:43:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:43:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:43:23,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:43:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:43:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:43:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:43:23,729 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:43:23,729 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:43:23,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:43:23 BoogieIcfgContainer [2020-10-29 09:43:23,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:43:23,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:43:23,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:43:23,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:43:23,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:43:23" (1/3) ... [2020-10-29 09:43:23,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248e5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:43:23, skipping insertion in model container [2020-10-29 09:43:23,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:43:23" (2/3) ... [2020-10-29 09:43:23,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@248e5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:43:23, skipping insertion in model container [2020-10-29 09:43:23,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:43:23" (3/3) ... [2020-10-29 09:43:23,743 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2020-10-29 09:43:23,760 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:43:23,768 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:43:23,789 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:43:23,843 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:43:23,843 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:43:23,843 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:43:23,843 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:43:23,844 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:43:23,844 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:43:23,844 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:43:23,844 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:43:23,889 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-29 09:43:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:43:23,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:23,902 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:23,903 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:23,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:23,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1398405025, now seen corresponding path program 1 times [2020-10-29 09:43:23,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:23,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147691911] [2020-10-29 09:43:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:24,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:24,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:24,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:43:24,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:24,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 09:43:24,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:24,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:43:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:24,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:43:24,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:43:24,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:24,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:24,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:43:24,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:24,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:24,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147691911] [2020-10-29 09:43:24,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:43:24,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:43:24,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415048206] [2020-10-29 09:43:24,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:43:24,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:24,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:43:24,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:43:24,451 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2020-10-29 09:43:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:24,581 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-10-29 09:43:24,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:43:24,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-29 09:43:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:24,591 INFO L225 Difference]: With dead ends: 39 [2020-10-29 09:43:24,591 INFO L226 Difference]: Without dead ends: 15 [2020-10-29 09:43:24,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:43:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-29 09:43:24,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-29 09:43:24,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-29 09:43:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-29 09:43:24,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-10-29 09:43:24,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:24,641 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-29 09:43:24,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:43:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-29 09:43:24,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 09:43:24,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:24,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:24,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:43:24,643 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:24,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1611202977, now seen corresponding path program 1 times [2020-10-29 09:43:24,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:24,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974265278] [2020-10-29 09:43:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:24,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:24,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:24,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 09:43:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 09:43:24,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:24,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:43:24,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:24,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 09:43:24,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 09:43:24,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:24,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:24,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:24,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:43:24,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:24,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:24,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:24,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974265278] [2020-10-29 09:43:24,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:24,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 09:43:24,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121170865] [2020-10-29 09:43:24,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:43:24,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:24,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:43:24,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:43:24,897 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2020-10-29 09:43:25,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:25,014 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-29 09:43:25,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:43:25,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-29 09:43:25,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:25,016 INFO L225 Difference]: With dead ends: 23 [2020-10-29 09:43:25,016 INFO L226 Difference]: Without dead ends: 16 [2020-10-29 09:43:25,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:43:25,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-29 09:43:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-29 09:43:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-29 09:43:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-29 09:43:25,027 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-29 09:43:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:25,027 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-29 09:43:25,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:43:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-29 09:43:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:43:25,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:25,029 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:25,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:43:25,029 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:25,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:25,030 INFO L82 PathProgramCache]: Analyzing trace with hash 381995103, now seen corresponding path program 2 times [2020-10-29 09:43:25,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:25,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377118566] [2020-10-29 09:43:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:25,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:25,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:25,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:43:25,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:25,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 09:43:25,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:25,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:25,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:43:25,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:25,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 09:43:25,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:25,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:25,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:25,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:25,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:25,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:25,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:43:25,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:25,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:25,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:25,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:25,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:25,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:25,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377118566] [2020-10-29 09:43:25,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:25,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:43:25,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868992761] [2020-10-29 09:43:25,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:43:25,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:25,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:43:25,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:43:25,335 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2020-10-29 09:43:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:25,521 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-29 09:43:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:43:25,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-29 09:43:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:25,523 INFO L225 Difference]: With dead ends: 24 [2020-10-29 09:43:25,523 INFO L226 Difference]: Without dead ends: 17 [2020-10-29 09:43:25,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:43:25,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-29 09:43:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-29 09:43:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-29 09:43:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-29 09:43:25,532 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-10-29 09:43:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:25,532 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-29 09:43:25,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:43:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-29 09:43:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 09:43:25,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:25,534 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:25,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:43:25,534 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:25,535 INFO L82 PathProgramCache]: Analyzing trace with hash 2041593439, now seen corresponding path program 3 times [2020-10-29 09:43:25,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:25,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036659489] [2020-10-29 09:43:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:25,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:25,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:25,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 09:43:25,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:25,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 09:43:25,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:25,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:43:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:43:25,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:25,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:25,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:25,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:25,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:43:25,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:25,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:25,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:25,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:43:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:25,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036659489] [2020-10-29 09:43:25,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:25,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:43:25,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125293255] [2020-10-29 09:43:25,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:43:25,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:25,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:43:25,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:43:25,780 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 7 states. [2020-10-29 09:43:25,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:25,942 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-29 09:43:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:43:25,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-29 09:43:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:25,943 INFO L225 Difference]: With dead ends: 25 [2020-10-29 09:43:25,943 INFO L226 Difference]: Without dead ends: 18 [2020-10-29 09:43:25,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:43:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-29 09:43:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-29 09:43:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-29 09:43:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-29 09:43:25,950 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2020-10-29 09:43:25,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:25,951 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-29 09:43:25,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:43:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-29 09:43:25,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 09:43:25,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:25,952 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:25,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:43:25,952 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:25,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:25,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1949534303, now seen corresponding path program 4 times [2020-10-29 09:43:25,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:25,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524653458] [2020-10-29 09:43:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:25,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:26,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:26,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 09:43:26,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 09:43:26,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:26,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:43:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 09:43:26,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:26,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:26,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:26,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:26,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:26,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:43:26,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:26,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:26,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524653458] [2020-10-29 09:43:26,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:43:26,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:43:26,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204405774] [2020-10-29 09:43:26,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:43:26,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:26,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:43:26,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:43:26,221 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2020-10-29 09:43:26,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:26,507 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-10-29 09:43:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:43:26,507 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-29 09:43:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:26,508 INFO L225 Difference]: With dead ends: 26 [2020-10-29 09:43:26,508 INFO L226 Difference]: Without dead ends: 19 [2020-10-29 09:43:26,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:43:26,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-29 09:43:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-29 09:43:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-29 09:43:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-29 09:43:26,515 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2020-10-29 09:43:26,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:26,515 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-29 09:43:26,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:43:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-29 09:43:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 09:43:26,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:43:26,517 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:43:26,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:43:26,517 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:43:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:43:26,518 INFO L82 PathProgramCache]: Analyzing trace with hash -904298913, now seen corresponding path program 5 times [2020-10-29 09:43:26,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:43:26,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387565588] [2020-10-29 09:43:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:43:26,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:26,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:26,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:26,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 09:43:26,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 09:43:26,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:26,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:43:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:43:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:43:26,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:26,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:43:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:43:26,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:43:26,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:43:26,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:43:26,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:43:26,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:43:26,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:43:26,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:43:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:43:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:43:26,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:43:26,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:43:26,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:43:26,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387565588] [2020-10-29 09:43:26,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:43:26,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 09:43:26,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537055612] [2020-10-29 09:43:26,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:43:26,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:43:26,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:43:26,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:43:26,680 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 8 states. [2020-10-29 09:43:26,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:43:26,811 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-29 09:43:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:43:26,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-10-29 09:43:26,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:43:26,812 INFO L225 Difference]: With dead ends: 19 [2020-10-29 09:43:26,812 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:43:26,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:43:26,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:43:26,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:43:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:43:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:43:26,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-29 09:43:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:43:26,814 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:43:26,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:43:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:43:26,814 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:43:26,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:43:26,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:43:27,150 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2020-10-29 09:43:27,155 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-29 09:43:27,155 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-29 09:43:27,156 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-29 09:43:27,156 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-29 09:43:27,156 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-29 09:43:27,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:43:27,156 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-29 09:43:27,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:43:27,157 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:43:27,157 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:43:27,157 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:43:27,161 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:43:27,162 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-29 09:43:27,162 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:43:27,162 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:43:27,162 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-29 09:43:27,162 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-10-29 09:43:27,162 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 34) the Hoare annotation is: true [2020-10-29 09:43:27,163 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 31) the Hoare annotation is: (or (and (<= main_~j~0 6) (<= (+ main_~j~0 3) main_~i~0) (<= 6 main_~j~0)) (let ((.cse0 (+ main_~i~0 9))) (and (<= 10 main_~j~0) (<= .cse0 main_~j~0) (<= main_~j~0 .cse0) (<= main_~j~0 10))) (let ((.cse1 (+ main_~i~0 6))) (and (<= main_~j~0 .cse1) (<= .cse1 main_~j~0) (<= 9 main_~j~0) (<= main_~j~0 9))) (let ((.cse2 (+ main_~i~0 3))) (and (<= main_~j~0 8) (<= main_~j~0 .cse2) (<= .cse2 main_~j~0) (<= 8 main_~j~0))) (and (<= main_~j~0 7) (<= 7 main_~j~0) (<= main_~j~0 main_~i~0) (<= main_~i~0 main_~j~0))) [2020-10-29 09:43:27,165 INFO L270 CegarLoopResult]: At program point L28-3(lines 28 31) the Hoare annotation is: (and (<= main_~j~0 6) (<= 6 main_~j~0)) [2020-10-29 09:43:27,165 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 34) no Hoare annotation was computed. [2020-10-29 09:43:27,165 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 34) no Hoare annotation was computed. [2020-10-29 09:43:27,165 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:43:27,165 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-29 09:43:27,165 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-29 09:43:27,166 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-29 09:43:27,166 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-29 09:43:27,166 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-29 09:43:27,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:43:27 BoogieIcfgContainer [2020-10-29 09:43:27,188 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:43:27,190 INFO L168 Benchmark]: Toolchain (without parser) took 4089.82 ms. Allocated memory was 152.0 MB in the beginning and 185.6 MB in the end (delta: 33.6 MB). Free memory was 128.0 MB in the beginning and 130.4 MB in the end (delta: -2.4 MB). Peak memory consumption was 99.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:27,191 INFO L168 Benchmark]: CDTParser took 0.68 ms. Allocated memory is still 152.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 107.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:43:27,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.25 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 118.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:27,192 INFO L168 Benchmark]: Boogie Preprocessor took 35.57 ms. Allocated memory is still 152.0 MB. Free memory was 118.1 MB in the beginning and 116.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:27,193 INFO L168 Benchmark]: RCFGBuilder took 340.18 ms. Allocated memory is still 152.0 MB. Free memory was 116.7 MB in the beginning and 103.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:27,195 INFO L168 Benchmark]: TraceAbstraction took 3454.00 ms. Allocated memory was 152.0 MB in the beginning and 185.6 MB in the end (delta: 33.6 MB). Free memory was 103.3 MB in the beginning and 130.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:43:27,199 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68 ms. Allocated memory is still 152.0 MB. Free memory was 123.9 MB in the beginning and 123.8 MB in the end (delta: 107.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.25 ms. Allocated memory is still 152.0 MB. Free memory was 127.4 MB in the beginning and 118.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.57 ms. Allocated memory is still 152.0 MB. Free memory was 118.1 MB in the beginning and 116.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 340.18 ms. Allocated memory is still 152.0 MB. Free memory was 116.7 MB in the beginning and 103.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3454.00 ms. Allocated memory was 152.0 MB in the beginning and 185.6 MB in the end (delta: 33.6 MB). Free memory was 103.3 MB in the beginning and 130.4 MB in the end (delta: -27.2 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. * 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: 28]: Loop Invariant Derived loop invariant: (((((j <= 6 && j + 3 <= i) && 6 <= j) || (((10 <= j && i + 9 <= j) && j <= i + 9) && j <= 10)) || (((j <= i + 6 && i + 6 <= j) && 9 <= j) && j <= 9)) || (((j <= 8 && j <= i + 3) && i + 3 <= j) && 8 <= j)) || (((j <= 7 && 7 <= j) && j <= i) && i <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 43 SDslu, 120 SDs, 0 SdLazy, 189 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 24 PreInvPairs, 30 NumberOfFragments, 117 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 200 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 4875 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 15/35 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...