/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 12:09:44,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 12:09:44,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 12:09:44,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 12:09:44,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 12:09:44,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 12:09:44,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 12:09:44,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 12:09:44,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 12:09:44,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 12:09:44,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 12:09:44,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 12:09:44,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 12:09:44,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 12:09:44,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 12:09:44,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 12:09:44,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 12:09:44,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 12:09:44,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 12:09:44,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 12:09:44,423 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 12:09:44,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 12:09:44,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 12:09:44,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 12:09:44,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 12:09:44,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 12:09:44,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 12:09:44,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 12:09:44,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 12:09:44,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 12:09:44,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 12:09:44,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 12:09:44,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 12:09:44,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 12:09:44,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 12:09:44,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 12:09:44,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 12:09:44,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 12:09:44,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 12:09:44,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 12:09:44,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 12:09:44,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 12:09:44,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-18 12:09:44,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 12:09:44,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 12:09:44,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-18 12:09:44,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-18 12:09:44,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 12:09:44,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 12:09:44,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 12:09:44,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 12:09:44,462 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 12:09:44,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 12:09:44,462 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-18 12:09:44,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 12:09:44,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 12:09:44,463 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 12:09:44,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:09:44,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 12:09:44,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 12:09:44,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 12:09:44,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 12:09:44,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 12:09:44,464 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-18 12:09:44,464 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-18 12:09:44,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 12:09:44,464 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 12:09:44,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 12:09:44,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 12:09:44,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 12:09:44,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 12:09:44,660 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 12:09:44,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2022-03-18 12:09:44,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86dee60e/6c7150b10dd04db6a622ac46a65ef54d/FLAGdf473a5e5 [2022-03-18 12:09:45,022 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 12:09:45,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2022-03-18 12:09:45,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86dee60e/6c7150b10dd04db6a622ac46a65ef54d/FLAGdf473a5e5 [2022-03-18 12:09:45,450 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c86dee60e/6c7150b10dd04db6a622ac46a65ef54d [2022-03-18 12:09:45,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 12:09:45,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 12:09:45,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 12:09:45,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 12:09:45,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 12:09:45,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75776b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45, skipping insertion in model container [2022-03-18 12:09:45,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 12:09:45,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 12:09:45,609 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i[893,906] [2022-03-18 12:09:45,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:09:45,631 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 12:09:45,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i[893,906] [2022-03-18 12:09:45,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 12:09:45,661 INFO L208 MainTranslator]: Completed translation [2022-03-18 12:09:45,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45 WrapperNode [2022-03-18 12:09:45,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 12:09:45,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 12:09:45,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 12:09:45,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 12:09:45,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 12:09:45,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 12:09:45,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 12:09:45,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 12:09:45,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45" (1/1) ... [2022-03-18 12:09:45,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 12:09:45,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:09:45,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 12:09:45,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 12:09:45,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 12:09:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 12:09:45,746 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 12:09:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 12:09:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 12:09:45,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 12:09:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 12:09:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 12:09:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 12:09:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 12:09:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 12:09:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 12:09:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 12:09:45,794 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 12:09:45,795 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 12:09:45,878 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 12:09:45,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 12:09:45,882 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-18 12:09:45,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:09:45 BoogieIcfgContainer [2022-03-18 12:09:45,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 12:09:45,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 12:09:45,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 12:09:45,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 12:09:45,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:09:45" (1/3) ... [2022-03-18 12:09:45,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b81129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:09:45, skipping insertion in model container [2022-03-18 12:09:45,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:09:45" (2/3) ... [2022-03-18 12:09:45,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b81129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:09:45, skipping insertion in model container [2022-03-18 12:09:45,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:09:45" (3/3) ... [2022-03-18 12:09:45,888 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2022-03-18 12:09:45,892 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 12:09:45,892 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 12:09:45,920 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 12:09:45,924 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 12:09:45,924 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 12:09:45,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 12:09:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-18 12:09:45,937 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:09:45,937 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:09:45,938 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:09:45,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:09:45,941 INFO L85 PathProgramCache]: Analyzing trace with hash -829760349, now seen corresponding path program 1 times [2022-03-18 12:09:45,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:09:45,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777127297] [2022-03-18 12:09:45,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:45,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:09:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:46,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:09:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:46,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:09:46,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777127297] [2022-03-18 12:09:46,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777127297] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:09:46,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 12:09:46,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 12:09:46,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050890607] [2022-03-18 12:09:46,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:09:46,186 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 12:09:46,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:09:46,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 12:09:46,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-18 12:09:46,208 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:46,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:09:46,322 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2022-03-18 12:09:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 12:09:46,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-18 12:09:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:09:46,328 INFO L225 Difference]: With dead ends: 47 [2022-03-18 12:09:46,328 INFO L226 Difference]: Without dead ends: 22 [2022-03-18 12:09:46,330 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-18 12:09:46,332 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:09:46,333 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 44 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:09:46,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-18 12:09:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-18 12:09:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 12:09:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-03-18 12:09:46,356 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2022-03-18 12:09:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:09:46,356 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-03-18 12:09:46,356 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-03-18 12:09:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 12:09:46,357 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:09:46,357 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:09:46,357 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 12:09:46,358 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:09:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:09:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -174022606, now seen corresponding path program 1 times [2022-03-18 12:09:46,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:09:46,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020839011] [2022-03-18 12:09:46,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:46,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:09:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:09:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:46,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:09:46,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020839011] [2022-03-18 12:09:46,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020839011] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:09:46,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395460600] [2022-03-18 12:09:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:46,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:09:46,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:09:46,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:09:46,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 12:09:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:46,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 12:09:46,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:09:46,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:46,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:09:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:46,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395460600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:09:46,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:09:46,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-18 12:09:46,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436738632] [2022-03-18 12:09:46,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:09:46,660 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 12:09:46,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:09:46,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 12:09:46,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-18 12:09:46,661 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:46,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:09:46,936 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2022-03-18 12:09:46,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 12:09:46,939 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-03-18 12:09:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:09:46,942 INFO L225 Difference]: With dead ends: 48 [2022-03-18 12:09:46,942 INFO L226 Difference]: Without dead ends: 46 [2022-03-18 12:09:46,944 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-03-18 12:09:46,945 INFO L912 BasicCegarLoop]: 20 mSDtfsCounter, 75 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 12:09:46,946 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 62 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 12:09:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-18 12:09:46,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2022-03-18 12:09:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:09:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-03-18 12:09:46,964 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 17 [2022-03-18 12:09:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:09:46,964 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-03-18 12:09:46,964 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 11 states have internal predecessors, (28), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-03-18 12:09:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 12:09:46,965 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:09:46,965 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:09:46,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 12:09:47,173 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:09:47,174 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:09:47,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:09:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash 767622940, now seen corresponding path program 1 times [2022-03-18 12:09:47,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:09:47,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279497638] [2022-03-18 12:09:47,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:47,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:09:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:09:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:47,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:09:47,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279497638] [2022-03-18 12:09:47,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279497638] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:09:47,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570760860] [2022-03-18 12:09:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:47,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:09:47,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:09:47,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:09:47,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 12:09:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:47,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 12:09:47,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:09:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:47,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:09:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:47,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570760860] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:09:47,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:09:47,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-18 12:09:47,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331213409] [2022-03-18 12:09:47,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:09:47,413 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 12:09:47,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:09:47,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 12:09:47,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-18 12:09:47,413 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:47,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:09:47,627 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-03-18 12:09:47,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 12:09:47,627 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-03-18 12:09:47,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:09:47,631 INFO L225 Difference]: With dead ends: 61 [2022-03-18 12:09:47,631 INFO L226 Difference]: Without dead ends: 59 [2022-03-18 12:09:47,632 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-03-18 12:09:47,633 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:09:47,633 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 60 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:09:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-18 12:09:47,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 41. [2022-03-18 12:09:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 32 states have (on average 1.3125) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:09:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-03-18 12:09:47,639 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 18 [2022-03-18 12:09:47,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:09:47,639 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-03-18 12:09:47,640 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:47,640 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-03-18 12:09:47,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 12:09:47,640 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:09:47,640 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:09:47,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 12:09:47,841 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 12:09:47,841 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:09:47,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:09:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -41723686, now seen corresponding path program 1 times [2022-03-18 12:09:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:09:47,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98096557] [2022-03-18 12:09:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:09:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:09:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:47,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:09:47,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98096557] [2022-03-18 12:09:47,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98096557] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:09:47,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842028442] [2022-03-18 12:09:47,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:47,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:09:47,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:09:47,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:09:47,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-18 12:09:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:47,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-18 12:09:47,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:09:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:48,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 12:09:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:48,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842028442] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 12:09:48,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 12:09:48,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-18 12:09:48,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638302668] [2022-03-18 12:09:48,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 12:09:48,074 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 12:09:48,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:09:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 12:09:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-03-18 12:09:48,075 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:48,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:09:48,273 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2022-03-18 12:09:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 12:09:48,274 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-03-18 12:09:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:09:48,275 INFO L225 Difference]: With dead ends: 65 [2022-03-18 12:09:48,275 INFO L226 Difference]: Without dead ends: 63 [2022-03-18 12:09:48,275 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-03-18 12:09:48,276 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 55 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 12:09:48,276 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 65 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 12:09:48,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-18 12:09:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2022-03-18 12:09:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 38 states have internal predecessors, (51), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:09:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-03-18 12:09:48,284 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 18 [2022-03-18 12:09:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:09:48,285 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-03-18 12:09:48,285 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-03-18 12:09:48,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-18 12:09:48,285 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:09:48,285 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:09:48,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-18 12:09:48,505 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:09:48,505 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:09:48,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:09:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2044959957, now seen corresponding path program 1 times [2022-03-18 12:09:48,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:09:48,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744957330] [2022-03-18 12:09:48,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:48,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:09:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:09:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:09:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744957330] [2022-03-18 12:09:48,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744957330] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:09:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692107764] [2022-03-18 12:09:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:48,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:09:48,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:09:48,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:09:48,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-18 12:09:48,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:48,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 12:09:48,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:09:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 12:09:48,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 12:09:48,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692107764] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:09:48,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 12:09:48,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-03-18 12:09:48,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408304504] [2022-03-18 12:09:48,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:09:48,619 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 12:09:48,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:09:48,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 12:09:48,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-18 12:09:48,620 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:09:48,635 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2022-03-18 12:09:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 12:09:48,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-03-18 12:09:48,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:09:48,637 INFO L225 Difference]: With dead ends: 68 [2022-03-18 12:09:48,637 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 12:09:48,638 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-03-18 12:09:48,639 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:09:48,640 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 32 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:09:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 12:09:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-03-18 12:09:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 12:09:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-03-18 12:09:48,652 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2022-03-18 12:09:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:09:48,653 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-03-18 12:09:48,653 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 12:09:48,653 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-03-18 12:09:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-18 12:09:48,654 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 12:09:48,654 INFO L500 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 12:09:48,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-18 12:09:48,867 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:09:48,867 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 12:09:48,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 12:09:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash -819973646, now seen corresponding path program 1 times [2022-03-18 12:09:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 12:09:48,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13724122] [2022-03-18 12:09:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:48,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 12:09:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 12:09:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-03-18 12:09:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:48,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-03-18 12:09:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 12:09:48,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 12:09:48,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13724122] [2022-03-18 12:09:48,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13724122] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 12:09:48,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576981617] [2022-03-18 12:09:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 12:09:48,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:09:48,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 12:09:48,977 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 12:09:48,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-18 12:09:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 12:09:49,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-18 12:09:49,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 12:09:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-18 12:09:49,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 12:09:49,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576981617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 12:09:49,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-18 12:09:49,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-03-18 12:09:49,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096679234] [2022-03-18 12:09:49,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 12:09:49,092 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 12:09:49,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 12:09:49,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 12:09:49,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-18 12:09:49,092 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 12:09:49,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 12:09:49,106 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-03-18 12:09:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 12:09:49,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-03-18 12:09:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 12:09:49,107 INFO L225 Difference]: With dead ends: 35 [2022-03-18 12:09:49,107 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 12:09:49,107 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-03-18 12:09:49,110 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 12:09:49,111 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 32 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 12:09:49,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 12:09:49,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 12:09:49,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 12:09:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 12:09:49,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2022-03-18 12:09:49,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 12:09:49,115 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 12:09:49,115 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 12:09:49,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 12:09:49,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 12:09:49,118 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 12:09:49,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-18 12:09:49,335 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 12:09:49,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 12:09:49,485 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-03-18 12:09:49,485 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-03-18 12:09:49,485 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-03-18 12:09:49,485 INFO L882 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-03-18 12:09:49,485 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-03-18 12:09:49,485 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-03-18 12:09:49,485 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-03-18 12:09:49,485 INFO L882 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2022-03-18 12:09:49,486 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 24 52) no Hoare annotation was computed. [2022-03-18 12:09:49,486 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 24 52) no Hoare annotation was computed. [2022-03-18 12:09:49,486 INFO L878 garLoopResultBuilder]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (< main_~n~0 2)) (.cse3 (<= 2000 main_~c2~0)) (.cse4 (<= 1 main_~i~0))) (or (and .cse0 (<= 1 main_~j~0) .cse1 .cse2 .cse3 (< 0 main_~k~0) .cse4) (and .cse0 (<= 0 main_~j~0) (<= 2000 main_~k~0) .cse1 .cse2 .cse3 .cse4) (and (= main_~j~0 0) (= main_~i~0 0) (<= main_~n~0 0)))) [2022-03-18 12:09:49,486 INFO L882 garLoopResultBuilder]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2022-03-18 12:09:49,486 INFO L882 garLoopResultBuilder]: For program point L40(lines 40 43) no Hoare annotation was computed. [2022-03-18 12:09:49,486 INFO L882 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2022-03-18 12:09:49,486 INFO L878 garLoopResultBuilder]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0))) (or (and .cse0 (<= 2000 main_~k~0) .cse1 (< main_~n~0 2) .cse2 (<= 1 main_~i~0)) (and .cse0 (= main_~k~0 0) .cse1 (= main_~i~0 0) .cse2))) [2022-03-18 12:09:49,486 INFO L882 garLoopResultBuilder]: For program point L34-2(lines 34 44) no Hoare annotation was computed. [2022-03-18 12:09:49,486 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 52) the Hoare annotation is: true [2022-03-18 12:09:49,486 INFO L878 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 0 main_~j~0) (<= 2000 main_~k~0) (<= 4000 main_~c1~0) (< main_~n~0 2) (<= 2000 main_~c2~0) (<= 1 main_~i~0)) [2022-03-18 12:09:49,487 INFO L882 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-03-18 12:09:49,487 INFO L882 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-03-18 12:09:49,487 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-18 12:09:49,487 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-18 12:09:49,487 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-18 12:09:49,487 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-18 12:09:49,487 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 12:09:49,487 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 12:09:49,487 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-18 12:09:49,487 INFO L882 garLoopResultBuilder]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2022-03-18 12:09:49,487 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-18 12:09:49,487 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2022-03-18 12:09:49,487 INFO L882 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-03-18 12:09:49,488 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-03-18 12:09:49,488 INFO L882 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-03-18 12:09:49,490 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-03-18 12:09:49,491 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 12:09:49,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 12:09:49 BoogieIcfgContainer [2022-03-18 12:09:49,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 12:09:49,501 INFO L158 Benchmark]: Toolchain (without parser) took 4048.26ms. Allocated memory was 194.0MB in the beginning and 287.3MB in the end (delta: 93.3MB). Free memory was 137.3MB in the beginning and 111.0MB in the end (delta: 26.4MB). Peak memory consumption was 118.2MB. Max. memory is 8.0GB. [2022-03-18 12:09:49,501 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory was 153.8MB in the beginning and 153.7MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 12:09:49,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.82ms. Allocated memory was 194.0MB in the beginning and 287.3MB in the end (delta: 93.3MB). Free memory was 137.1MB in the beginning and 257.9MB in the end (delta: -120.8MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-03-18 12:09:49,502 INFO L158 Benchmark]: Boogie Preprocessor took 27.20ms. Allocated memory is still 287.3MB. Free memory was 257.9MB in the beginning and 256.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 12:09:49,502 INFO L158 Benchmark]: RCFGBuilder took 192.73ms. Allocated memory is still 287.3MB. Free memory was 256.2MB in the beginning and 245.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 12:09:49,502 INFO L158 Benchmark]: TraceAbstraction took 3616.35ms. Allocated memory is still 287.3MB. Free memory was 244.6MB in the beginning and 111.0MB in the end (delta: 133.7MB). Peak memory consumption was 134.2MB. Max. memory is 8.0GB. [2022-03-18 12:09:49,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory was 153.8MB in the beginning and 153.7MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.82ms. Allocated memory was 194.0MB in the beginning and 287.3MB in the end (delta: 93.3MB). Free memory was 137.1MB in the beginning and 257.9MB in the end (delta: -120.8MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.20ms. Allocated memory is still 287.3MB. Free memory was 257.9MB in the beginning and 256.6MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 192.73ms. Allocated memory is still 287.3MB. Free memory was 256.2MB in the beginning and 245.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 3616.35ms. Allocated memory is still 287.3MB. Free memory was 244.6MB in the beginning and 111.0MB in the end (delta: 133.7MB). Peak memory consumption was 134.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 269 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 267 mSDsluCounter, 295 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 150 mSDsCounter, 120 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 678 IncrementalHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 120 mSolverCounterUnsat, 145 mSDtfsCounter, 678 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, InterpolantAutomatonStates: 52, 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, 6 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 20 NumberOfFragments, 124 HoareAnnotationTreeSize, 14 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 400 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 224 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 717 SizeOfPredicates, 9 NumberOfNonLiveVariables, 483 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 33/51 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((10000 <= c3 && 2000 <= k) && 4000 <= c1) && n < 2) && 2000 <= c2) && 1 <= i) || ((((10000 <= c3 && k == 0) && 4000 <= c1) && i == 0) && 2000 <= c2) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((10000 <= c3 && 1 <= j) && 4000 <= c1) && n < 2) && 2000 <= c2) && 0 < k) && 1 <= i) || ((((((10000 <= c3 && 0 <= j) && 2000 <= k) && 4000 <= c1) && n < 2) && 2000 <= c2) && 1 <= i)) || ((j == 0 && i == 0) && n <= 0) RESULT: Ultimate proved your program to be correct! [2022-03-18 12:09:49,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...