/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loops/linear_search.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 08:03:12,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:03:12,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:03:12,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 08:03:12,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 08:03:12,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 08:03:12,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 08:03:12,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 08:03:12,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 08:03:12,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 08:03:12,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 08:03:12,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 08:03:12,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:03:12,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:03:12,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:03:12,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:03:12,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:03:12,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:03:12,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:03:12,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:03:12,529 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:03:12,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:03:12,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:03:12,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:03:12,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:03:12,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 08:03:12,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:03:12,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:03:12,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:03:12,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:03:12,565 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:03:12,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:03:12,567 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:03:12,567 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:03:12,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:03:12,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:03:12,568 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:03:12,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:03:12,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:03:12,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:03:12,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:03:12,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:03:12,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:03:12,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:03:12,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:03:12,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:03:12,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:03:12,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:03:12,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:03:12,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:03:12,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:03:12,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:03:12,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:03:12,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:03:12,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:03:12,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:03:12,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:03:12,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:03:12,572 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:03:12,572 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:03:12,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:03:12,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:03:12,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:03:12,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:03:12,791 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:03:12,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/linear_search.c [2022-03-20 08:03:12,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8387b933e/51f25a5b31834930b28fedd3f7d361dd/FLAG7cded4c35 [2022-03-20 08:03:13,199 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:03:13,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_search.c [2022-03-20 08:03:13,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8387b933e/51f25a5b31834930b28fedd3f7d361dd/FLAG7cded4c35 [2022-03-20 08:03:13,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8387b933e/51f25a5b31834930b28fedd3f7d361dd [2022-03-20 08:03:13,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:03:13,214 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:03:13,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:03:13,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:03:13,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:03:13,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe37938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13, skipping insertion in model container [2022-03-20 08:03:13,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:03:13,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:03:13,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_search.c[383,396] [2022-03-20 08:03:13,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:03:13,417 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:03:13,428 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/linear_search.c[383,396] [2022-03-20 08:03:13,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:03:13,454 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:03:13,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13 WrapperNode [2022-03-20 08:03:13,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:03:13,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:03:13,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:03:13,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:03:13,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:03:13,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:03:13,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:03:13,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:03:13,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:03:13,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:03:13,520 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) [2022-03-20 08:03:13,531 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 [2022-03-20 08:03:13,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:03:13,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:03:13,545 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:03:13,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 08:03:13,545 INFO L138 BoogieDeclarations]: Found implementation of procedure linear_search [2022-03-20 08:03:13,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:03:13,545 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-20 08:03:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:03:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:03:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:03:13,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure linear_search [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:03:13,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:03:13,613 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:03:13,614 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:03:13,711 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:03:13,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:03:13,715 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 08:03:13,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:03:13 BoogieIcfgContainer [2022-03-20 08:03:13,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:03:13,717 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:03:13,717 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:03:13,718 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:03:13,720 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:03:13" (1/1) ... [2022-03-20 08:03:13,721 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:03:13,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:03:13 BasicIcfg [2022-03-20 08:03:13,744 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:03:13,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:03:13,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:03:13,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:03:13,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:03:13" (1/4) ... [2022-03-20 08:03:13,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8d5995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:03:13, skipping insertion in model container [2022-03-20 08:03:13,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:13" (2/4) ... [2022-03-20 08:03:13,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8d5995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:03:13, skipping insertion in model container [2022-03-20 08:03:13,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:03:13" (3/4) ... [2022-03-20 08:03:13,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8d5995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:03:13, skipping insertion in model container [2022-03-20 08:03:13,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:03:13" (4/4) ... [2022-03-20 08:03:13,757 INFO L111 eAbstractionObserver]: Analyzing ICFG linear_search.cqvasr [2022-03-20 08:03:13,760 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:03:13,760 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:03:13,808 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:03:13,812 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=FINITE_AUTOMATA, 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 [2022-03-20 08:03:13,812 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:03:13,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 08:03:13,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-20 08:03:13,827 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:13,827 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:13,828 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:13,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1395824931, now seen corresponding path program 1 times [2022-03-20 08:03:13,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:13,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994419741] [2022-03-20 08:03:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:13,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:03:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 08:03:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:14,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994419741] [2022-03-20 08:03:14,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994419741] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:14,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:03:14,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 08:03:14,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614894453] [2022-03-20 08:03:14,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:14,111 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 08:03:14,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:14,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 08:03:14,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 08:03:14,140 INFO L87 Difference]: Start difference. First operand has 34 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 08:03:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:14,229 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2022-03-20 08:03:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 08:03:14,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-03-20 08:03:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:14,237 INFO L225 Difference]: With dead ends: 52 [2022-03-20 08:03:14,237 INFO L226 Difference]: Without dead ends: 27 [2022-03-20 08:03:14,243 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 08:03:14,246 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 38 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 08:03:14,247 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 39 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 08:03:14,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-20 08:03:14,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-20 08:03:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 08:03:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-03-20 08:03:14,281 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-03-20 08:03:14,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:14,281 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-03-20 08:03:14,282 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 08:03:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-03-20 08:03:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-20 08:03:14,283 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:14,283 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:14,284 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:03:14,284 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1369163817, now seen corresponding path program 1 times [2022-03-20 08:03:14,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:14,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536254936] [2022-03-20 08:03:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:03:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 08:03:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:14,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:14,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536254936] [2022-03-20 08:03:14,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536254936] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:14,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:03:14,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 08:03:14,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473034205] [2022-03-20 08:03:14,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:14,473 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 08:03:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 08:03:14,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-20 08:03:14,477 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 08:03:14,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:14,644 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-03-20 08:03:14,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 08:03:14,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-03-20 08:03:14,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:14,646 INFO L225 Difference]: With dead ends: 35 [2022-03-20 08:03:14,646 INFO L226 Difference]: Without dead ends: 27 [2022-03-20 08:03:14,648 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-03-20 08:03:14,648 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 37 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:03:14,649 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 50 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:03:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-20 08:03:14,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-20 08:03:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 08:03:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-03-20 08:03:14,657 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 25 [2022-03-20 08:03:14,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:14,657 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-03-20 08:03:14,657 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 08:03:14,658 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-03-20 08:03:14,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-20 08:03:14,659 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:14,659 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:14,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:03:14,659 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:14,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1182993144, now seen corresponding path program 1 times [2022-03-20 08:03:14,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:14,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622407450] [2022-03-20 08:03:14,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:14,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:03:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 08:03:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:14,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:14,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622407450] [2022-03-20 08:03:14,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622407450] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:14,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:03:14,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 08:03:14,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475882116] [2022-03-20 08:03:14,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:14,873 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 08:03:14,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:14,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 08:03:14,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-20 08:03:14,874 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 08:03:16,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 08:03:17,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:17,276 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-03-20 08:03:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 08:03:17,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-03-20 08:03:17,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:17,277 INFO L225 Difference]: With dead ends: 40 [2022-03-20 08:03:17,277 INFO L226 Difference]: Without dead ends: 31 [2022-03-20 08:03:17,278 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-03-20 08:03:17,278 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 65 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 08:03:17,279 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 38 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 89 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 08:03:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-03-20 08:03:17,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-03-20 08:03:17,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 08:03:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-03-20 08:03:17,283 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2022-03-20 08:03:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:17,284 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-03-20 08:03:17,284 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-20 08:03:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-03-20 08:03:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 08:03:17,284 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:17,284 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:17,285 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 08:03:17,285 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:17,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash -503218689, now seen corresponding path program 1 times [2022-03-20 08:03:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:17,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608279565] [2022-03-20 08:03:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:17,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:17,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:03:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:17,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 08:03:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:17,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:17,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608279565] [2022-03-20 08:03:17,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608279565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:17,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:03:17,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 08:03:17,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125615770] [2022-03-20 08:03:17,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:17,385 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 08:03:17,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 08:03:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-03-20 08:03:17,386 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 08:03:17,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:17,516 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-03-20 08:03:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 08:03:17,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-03-20 08:03:17,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:17,518 INFO L225 Difference]: With dead ends: 50 [2022-03-20 08:03:17,518 INFO L226 Difference]: Without dead ends: 37 [2022-03-20 08:03:17,518 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-03-20 08:03:17,519 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 61 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:03:17,519 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 31 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 08:03:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-20 08:03:17,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2022-03-20 08:03:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 08:03:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-03-20 08:03:17,524 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 29 [2022-03-20 08:03:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:17,524 INFO L478 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-03-20 08:03:17,525 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-03-20 08:03:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-03-20 08:03:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 08:03:17,525 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:17,525 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:17,525 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 08:03:17,525 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash -374135970, now seen corresponding path program 1 times [2022-03-20 08:03:17,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:17,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129468042] [2022-03-20 08:03:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:17,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:17,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:03:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:17,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 08:03:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:17,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:17,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129468042] [2022-03-20 08:03:17,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129468042] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:03:17,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822590389] [2022-03-20 08:03:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:17,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:03:17,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:03:17,816 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) [2022-03-20 08:03:17,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 08:03:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:17,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-20 08:03:17,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 08:03:17,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-03-20 08:03:18,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2022-03-20 08:03:24,462 WARN L833 $PredicateComparison]: unable to prove that (and (< 1 (mod c_~SIZE~0 4294967296)) (exists ((v_ArrVal_38 Int)) (= (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) c_main_~a~0.offset) v_ArrVal_38) (select |c_#memory_int| c_main_~a~0.base)))) is different from false [2022-03-20 08:03:30,919 WARN L833 $PredicateComparison]: unable to prove that (and (< 1 (mod c_~SIZE~0 4294967296)) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38)))) is different from false [2022-03-20 08:03:37,371 WARN L833 $PredicateComparison]: unable to prove that (and (< 1 (mod c_~SIZE~0 4294967296)) (= c_linear_search_~a.base |c_linear_search_#in~a.base|) (= |c_linear_search_#in~q| c_linear_search_~q) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (<= |c_linear_search_#in~a.offset| c_linear_search_~a.offset)) is different from false [2022-03-20 08:04:05,371 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((linear_search_~a.offset Int)) (and (<= |c_linear_search_#in~a.offset| linear_search_~a.offset) (let ((.cse0 (= (select (select |c_#memory_int| |c_linear_search_#in~a.base|) (+ (* (mod c_linear_search_~j~0 4294967296) 4) linear_search_~a.offset)) |c_linear_search_#in~q|))) (or (and .cse0 (not |c_linear_search_#t~short5|)) (and (not .cse0) |c_linear_search_#t~short5|))))) (< 1 (mod c_~SIZE~0 4294967296)) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38)))) is different from false [2022-03-20 08:04:11,843 WARN L833 $PredicateComparison]: unable to prove that (and (< 1 (mod c_~SIZE~0 4294967296)) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (exists ((linear_search_~a.offset Int)) (and (<= |c_linear_search_#in~a.offset| linear_search_~a.offset) (= (select (select |c_#memory_int| |c_linear_search_#in~a.base|) (+ (* (mod c_linear_search_~j~0 4294967296) 4) linear_search_~a.offset)) |c_linear_search_#in~q|)))) is different from false [2022-03-20 08:04:18,344 WARN L833 $PredicateComparison]: unable to prove that (and (< 1 (mod c_~SIZE~0 4294967296)) (exists ((aux_mod_linear_search_~j~0_35 Int) (linear_search_~a.offset Int)) (and (<= (mod c_~SIZE~0 4294967296) aux_mod_linear_search_~j~0_35) (<= |c_linear_search_#in~a.offset| linear_search_~a.offset) (< aux_mod_linear_search_~j~0_35 4294967296) (= |c_linear_search_#in~q| (select (select |c_#memory_int| |c_linear_search_#in~a.base|) (+ (* (mod aux_mod_linear_search_~j~0_35 4294967296) 4) linear_search_~a.offset))))) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38)))) is different from false [2022-03-20 08:04:38,555 WARN L232 SmtUtils]: Spent 13.72s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-03-20 08:04:38,556 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-20 08:04:38,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 54 [2022-03-20 08:04:52,058 WARN L232 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-03-20 08:05:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-20 08:05:09,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 08:05:09,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822590389] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:05:09,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 08:05:09,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2022-03-20 08:05:09,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413555373] [2022-03-20 08:05:09,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 08:05:09,409 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-20 08:05:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:05:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-20 08:05:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=237, Unknown=6, NotChecked=210, Total=506 [2022-03-20 08:05:09,410 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 18 states have internal predecessors, (37), 6 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-03-20 08:05:11,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-03-20 08:05:13,976 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (* (div c_~SIZE~0 4294967296) 4294967296))) (and (< 1 (mod c_~SIZE~0 4294967296)) (<= c_~SIZE~0 (+ .cse0 99999)) (<= (+ 2 .cse0) c_~SIZE~0) (exists ((v_ArrVal_38 Int)) (= (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) c_main_~a~0.offset) v_ArrVal_38) (select |c_#memory_int| c_main_~a~0.base))))) is different from false [2022-03-20 08:05:16,125 WARN L833 $PredicateComparison]: unable to prove that (and (<= 0 c_linear_search_~j~0) (< 1 (mod c_~SIZE~0 4294967296)) (<= c_linear_search_~j~0 0) (= c_linear_search_~a.base |c_linear_search_#in~a.base|) (= |c_linear_search_#in~q| c_linear_search_~q) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (<= |c_linear_search_#in~a.offset| c_linear_search_~a.offset)) is different from false [2022-03-20 08:05:18,274 WARN L833 $PredicateComparison]: unable to prove that (and (< 1 (mod c_~SIZE~0 4294967296)) (<= c_linear_search_~j~0 0) (= c_linear_search_~a.base |c_linear_search_#in~a.base|) (= |c_linear_search_#in~q| c_linear_search_~q) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (<= |c_linear_search_#in~a.offset| c_linear_search_~a.offset) (<= c_linear_search_~n (+ c_linear_search_~j~0 4294967295 (* (div c_linear_search_~n 4294967296) 4294967296)))) is different from false [2022-03-20 08:05:20,429 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((linear_search_~a.offset Int)) (and (<= |c_linear_search_#in~a.offset| linear_search_~a.offset) (let ((.cse0 (= (select (select |c_#memory_int| |c_linear_search_#in~a.base|) (+ (* (mod c_linear_search_~j~0 4294967296) 4) linear_search_~a.offset)) |c_linear_search_#in~q|))) (or (and .cse0 (not |c_linear_search_#t~short5|)) (and (not .cse0) |c_linear_search_#t~short5|))))) (< 1 (mod c_~SIZE~0 4294967296)) (<= c_linear_search_~j~0 0) (= c_linear_search_~a.base |c_linear_search_#in~a.base|) (= |c_linear_search_#in~q| c_linear_search_~q) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (<= |c_linear_search_#in~a.offset| c_linear_search_~a.offset) (<= c_linear_search_~n (+ c_linear_search_~j~0 4294967295 (* (div c_linear_search_~n 4294967296) 4294967296)))) is different from false [2022-03-20 08:05:22,580 WARN L833 $PredicateComparison]: unable to prove that (and (< 1 (mod c_~SIZE~0 4294967296)) (<= c_linear_search_~j~0 1) (= c_linear_search_~a.base |c_linear_search_#in~a.base|) (= |c_linear_search_#in~q| c_linear_search_~q) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (<= |c_linear_search_#in~a.offset| c_linear_search_~a.offset) (or (not (<= (+ (div c_linear_search_~j~0 4294967296) 1) 0)) (<= c_linear_search_~n (+ c_linear_search_~j~0 4294967294 (* (div c_linear_search_~n 4294967296) 4294967296))))) is different from false [2022-03-20 08:05:24,740 WARN L833 $PredicateComparison]: unable to prove that (and (or (< 0 (+ (div c_linear_search_~j~0 4294967296) 1)) (not |c_linear_search_#t~short5|)) (< 1 (mod c_~SIZE~0 4294967296)) (<= c_linear_search_~j~0 1) (= c_linear_search_~a.base |c_linear_search_#in~a.base|) (= |c_linear_search_#in~q| c_linear_search_~q) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (<= |c_linear_search_#in~a.offset| c_linear_search_~a.offset)) is different from false [2022-03-20 08:05:26,891 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((linear_search_~a.offset Int)) (and (<= |c_linear_search_#in~a.offset| linear_search_~a.offset) (let ((.cse0 (= (select (select |c_#memory_int| |c_linear_search_#in~a.base|) (+ (* (mod c_linear_search_~j~0 4294967296) 4) linear_search_~a.offset)) |c_linear_search_#in~q|))) (or (and .cse0 (not |c_linear_search_#t~short5|)) (and (not .cse0) |c_linear_search_#t~short5|))))) (< 0 (+ (div c_linear_search_~j~0 4294967296) 1)) (< 1 (mod c_~SIZE~0 4294967296)) (<= c_linear_search_~j~0 1) (= c_linear_search_~a.base |c_linear_search_#in~a.base|) (= |c_linear_search_#in~q| c_linear_search_~q) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (<= |c_linear_search_#in~a.offset| c_linear_search_~a.offset)) is different from false [2022-03-20 08:05:29,038 WARN L833 $PredicateComparison]: unable to prove that (and (< 0 (+ (div c_linear_search_~j~0 4294967296) 1)) (< 1 (mod c_~SIZE~0 4294967296)) (<= c_linear_search_~j~0 1) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (exists ((linear_search_~a.offset Int)) (and (<= |c_linear_search_#in~a.offset| linear_search_~a.offset) (= (select (select |c_#memory_int| |c_linear_search_#in~a.base|) (+ (* (mod c_linear_search_~j~0 4294967296) 4) linear_search_~a.offset)) |c_linear_search_#in~q|)))) is different from false [2022-03-20 08:05:31,195 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((linear_search_~a.offset Int)) (and (<= |c_linear_search_#in~a.offset| linear_search_~a.offset) (let ((.cse0 (= (select (select |c_#memory_int| |c_linear_search_#in~a.base|) (+ (* (mod c_linear_search_~j~0 4294967296) 4) linear_search_~a.offset)) |c_linear_search_#in~q|))) (or (and .cse0 (not |c_linear_search_#t~short5|)) (and (not .cse0) |c_linear_search_#t~short5|))))) (< 1 (mod c_~SIZE~0 4294967296)) (= c_linear_search_~a.base |c_linear_search_#in~a.base|) (= |c_linear_search_#in~q| c_linear_search_~q) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (<= |c_linear_search_#in~a.offset| c_linear_search_~a.offset)) is different from false [2022-03-20 08:05:33,346 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< 1 (mod c_~SIZE~0 4294967296)) (= |c_old(#memory_int)| |c_#memory_int|) (exists ((aux_mod_linear_search_~j~0_35 Int) (linear_search_~a.offset Int)) (and (<= (mod c_~SIZE~0 4294967296) aux_mod_linear_search_~j~0_35) (<= |c_linear_search_#in~a.offset| linear_search_~a.offset) (< aux_mod_linear_search_~j~0_35 4294967296) (= |c_linear_search_#in~q| (select (select |c_#memory_int| |c_linear_search_#in~a.base|) (+ (* (mod aux_mod_linear_search_~j~0_35 4294967296) 4) linear_search_~a.offset))))) (= c_~MAX~0 |c_old(~MAX~0)|) (exists ((v_main_~a~0.base_BEFORE_CALL_1 Int) (v_ArrVal_38 Int) (v_main_~a~0.offset_BEFORE_CALL_1 Int)) (= (select |c_#memory_int| v_main_~a~0.base_BEFORE_CALL_1) (store ((as const (Array Int Int)) 0) (+ (* (mod (div (mod c_~SIZE~0 4294967296) 2) 4294967296) 4) v_main_~a~0.offset_BEFORE_CALL_1) v_ArrVal_38))) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (= |c_old(~SIZE~0)| c_~SIZE~0)) is different from false [2022-03-20 08:05:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:05:33,371 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-03-20 08:05:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-20 08:05:33,371 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 18 states have internal predecessors, (37), 6 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 29 [2022-03-20 08:05:33,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:05:33,372 INFO L225 Difference]: With dead ends: 52 [2022-03-20 08:05:33,372 INFO L226 Difference]: Without dead ends: 40 [2022-03-20 08:05:33,373 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=140, Invalid=558, Unknown=16, NotChecked=1008, Total=1722 [2022-03-20 08:05:33,374 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-20 08:05:33,374 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 86 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 105 Invalid, 1 Unknown, 108 Unchecked, 2.1s Time] [2022-03-20 08:05:33,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-03-20 08:05:33,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2022-03-20 08:05:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 08:05:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-03-20 08:05:33,380 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 29 [2022-03-20 08:05:33,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:05:33,380 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-03-20 08:05:33,380 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 18 states have internal predecessors, (37), 6 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-03-20 08:05:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-03-20 08:05:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 08:05:33,381 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:05:33,381 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:05:33,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 08:05:33,585 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:05:33,586 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:05:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:05:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash -570649475, now seen corresponding path program 1 times [2022-03-20 08:05:33,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:05:33,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225615441] [2022-03-20 08:05:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:05:33,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:05:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:05:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:05:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:05:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-03-20 08:05:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:05:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 08:05:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:05:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:05:33,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:05:33,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225615441] [2022-03-20 08:05:33,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225615441] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 08:05:33,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439348949] [2022-03-20 08:05:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:05:33,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 08:05:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:05:33,716 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) [2022-03-20 08:05:33,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process