/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-crafted-1/nested5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 22:29:41,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 22:29:41,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 22:29:41,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 22:29:41,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 22:29:41,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 22:29:41,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 22:29:41,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 22:29:41,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 22:29:41,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 22:29:41,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 22:29:41,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 22:29:41,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 22:29:41,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 22:29:41,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 22:29:41,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 22:29:41,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 22:29:41,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 22:29:41,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 22:29:41,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 22:29:41,506 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 22:29:41,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 22:29:41,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 22:29:41,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 22:29:41,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 22:29:41,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 22:29:41,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 22:29:41,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 22:29:41,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 22:29:41,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-18 22:29:41,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 22:29:41,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 22:29:41,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 22:29:41,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 22:29:41,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 22:29:41,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 22:29:41,558 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 22:29:41,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 22:29:41,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 22:29:41,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 22:29:41,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 22:29:41,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 22:29:41,559 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 22:29:41,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 22:29:41,559 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 22:29:41,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 22:29:41,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 22:29:41,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 22:29:41,560 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 22:29:41,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 22:29:41,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 22:29:41,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 22:29:41,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 22:29:41,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 22:29:41,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 22:29:41,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 22:29:41,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-18 22:29:41,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-18 22:29:41,561 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 22:29:41,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 22:29:41,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 22:29:41,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 22:29:41,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 22:29:41,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 22:29:41,783 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 22:29:41,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested5-2.c [2022-03-18 22:29:41,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca3563dd/cfbc8e2b3a9b4ac08a854d21303a0790/FLAGffc51c23e [2022-03-18 22:29:42,192 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 22:29:42,193 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested5-2.c [2022-03-18 22:29:42,197 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca3563dd/cfbc8e2b3a9b4ac08a854d21303a0790/FLAGffc51c23e [2022-03-18 22:29:42,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ca3563dd/cfbc8e2b3a9b4ac08a854d21303a0790 [2022-03-18 22:29:42,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 22:29:42,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 22:29:42,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 22:29:42,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 22:29:42,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 22:29:42,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f76eb6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42, skipping insertion in model container [2022-03-18 22:29:42,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 22:29:42,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 22:29:42,437 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-crafted-1/nested5-2.c[321,334] [2022-03-18 22:29:42,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 22:29:42,460 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 22:29:42,474 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-crafted-1/nested5-2.c[321,334] [2022-03-18 22:29:42,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 22:29:42,500 INFO L208 MainTranslator]: Completed translation [2022-03-18 22:29:42,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42 WrapperNode [2022-03-18 22:29:42,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 22:29:42,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 22:29:42,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 22:29:42,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 22:29:42,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 22:29:42,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 22:29:42,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 22:29:42,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 22:29:42,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 22:29:42,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:29:42,563 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 22:29:42,564 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 22:29:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 22:29:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 22:29:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 22:29:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 22:29:42,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 22:29:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 22:29:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 22:29:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 22:29:42,639 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 22:29:42,640 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 22:29:42,732 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 22:29:42,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 22:29:42,737 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-03-18 22:29:42,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 10:29:42 BoogieIcfgContainer [2022-03-18 22:29:42,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 22:29:42,739 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 22:29:42,739 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 22:29:42,740 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 22:29:42,743 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 10:29:42" (1/1) ... [2022-03-18 22:29:42,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 10:29:42 BasicIcfg [2022-03-18 22:29:42,772 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 22:29:42,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 22:29:42,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 22:29:42,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 22:29:42,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 10:29:42" (1/4) ... [2022-03-18 22:29:42,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22da85c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 10:29:42, skipping insertion in model container [2022-03-18 22:29:42,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 10:29:42" (2/4) ... [2022-03-18 22:29:42,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22da85c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 10:29:42, skipping insertion in model container [2022-03-18 22:29:42,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 10:29:42" (3/4) ... [2022-03-18 22:29:42,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22da85c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 10:29:42, skipping insertion in model container [2022-03-18 22:29:42,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 10:29:42" (4/4) ... [2022-03-18 22:29:42,777 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-2.cqvasr [2022-03-18 22:29:42,781 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 22:29:42,781 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 22:29:42,851 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 22:29:42,866 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 [2022-03-18 22:29:42,867 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 22:29:42,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 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 22:29:42,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-18 22:29:42,887 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:29:42,887 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:29:42,888 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:29:42,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:29:42,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1895308246, now seen corresponding path program 1 times [2022-03-18 22:29:42,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:29:42,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129812346] [2022-03-18 22:29:42,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:29:42,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:29:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:29:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:43,123 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 22:29:43,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:29:43,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129812346] [2022-03-18 22:29:43,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129812346] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 22:29:43,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 22:29:43,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 22:29:43,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969292277] [2022-03-18 22:29:43,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 22:29:43,130 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 22:29:43,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:29:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 22:29:43,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 22:29:43,161 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 21 states have internal predecessors, (32), 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 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 22:29:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:29:43,215 INFO L93 Difference]: Finished difference Result 50 states and 71 transitions. [2022-03-18 22:29:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 22:29:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 15 [2022-03-18 22:29:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:29:43,225 INFO L225 Difference]: With dead ends: 50 [2022-03-18 22:29:43,225 INFO L226 Difference]: Without dead ends: 23 [2022-03-18 22:29:43,228 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 22:29:43,233 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 22:29:43,234 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 22:29:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-18 22:29:43,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-18 22:29:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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 22:29:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-03-18 22:29:43,266 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 15 [2022-03-18 22:29:43,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:29:43,267 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-03-18 22:29:43,267 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 22:29:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-03-18 22:29:43,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-18 22:29:43,268 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:29:43,268 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:29:43,269 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 22:29:43,269 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:29:43,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:29:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1894384725, now seen corresponding path program 1 times [2022-03-18 22:29:43,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:29:43,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713776544] [2022-03-18 22:29:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:29:43,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:29:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:43,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:29:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:43,381 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 22:29:43,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:29:43,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713776544] [2022-03-18 22:29:43,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713776544] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 22:29:43,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 22:29:43,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 22:29:43,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581977625] [2022-03-18 22:29:43,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 22:29:43,383 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 22:29:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:29:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 22:29:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 22:29:43,384 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 22:29:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:29:43,444 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2022-03-18 22:29:43,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-18 22:29:43,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 15 [2022-03-18 22:29:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:29:43,445 INFO L225 Difference]: With dead ends: 49 [2022-03-18 22:29:43,446 INFO L226 Difference]: Without dead ends: 32 [2022-03-18 22:29:43,446 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 22:29:43,447 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 41 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 22:29:43,448 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 31 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 22:29:43,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-18 22:29:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2022-03-18 22:29:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 22:29:43,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-03-18 22:29:43,454 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2022-03-18 22:29:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:29:43,454 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-03-18 22:29:43,455 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 22:29:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-03-18 22:29:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 22:29:43,455 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:29:43,456 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 22:29:43,456 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 22:29:43,456 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:29:43,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:29:43,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1473809801, now seen corresponding path program 1 times [2022-03-18 22:29:43,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:29:43,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800838106] [2022-03-18 22:29:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:29:43,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:29:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:43,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:29:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:43,549 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 22:29:43,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:29:43,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800838106] [2022-03-18 22:29:43,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800838106] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 22:29:43,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538149137] [2022-03-18 22:29:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:29:43,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:29:43,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:29:43,559 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 22:29:43,587 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 22:29:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:43,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-18 22:29:43,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 22:29:43,694 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 22:29:43,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 22:29:43,799 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 22:29:43,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538149137] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 22:29:43,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 22:29:43,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-03-18 22:29:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555496905] [2022-03-18 22:29:43,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 22:29:43,800 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 22:29:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:29:43,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 22:29:43,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-03-18 22:29:43,801 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:29:43,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:29:43,969 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2022-03-18 22:29:43,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 22:29:43,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 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 22:29:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:29:43,970 INFO L225 Difference]: With dead ends: 55 [2022-03-18 22:29:43,970 INFO L226 Difference]: Without dead ends: 37 [2022-03-18 22:29:43,971 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-18 22:29:43,972 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 57 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 22:29:43,973 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 36 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 22:29:43,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-18 22:29:43,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-03-18 22:29:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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 22:29:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-03-18 22:29:43,979 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 17 [2022-03-18 22:29:43,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:29:43,979 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-03-18 22:29:43,979 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:29:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-03-18 22:29:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-18 22:29:43,980 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:29:43,980 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:29:44,006 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 22:29:44,181 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:29:44,181 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:29:44,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:29:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1878931933, now seen corresponding path program 2 times [2022-03-18 22:29:44,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:29:44,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217506876] [2022-03-18 22:29:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:29:44,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:29:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:29:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:29:44,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:29:44,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217506876] [2022-03-18 22:29:44,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217506876] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 22:29:44,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481850991] [2022-03-18 22:29:44,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 22:29:44,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:29:44,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:29:44,349 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 22:29:44,351 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 22:29:44,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 22:29:44,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 22:29:44,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-18 22:29:44,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 22:29:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:29:44,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 22:29:44,651 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:29:44,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481850991] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 22:29:44,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 22:29:44,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-03-18 22:29:44,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200460986] [2022-03-18 22:29:44,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 22:29:44,656 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-18 22:29:44,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:29:44,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-18 22:29:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-03-18 22:29:44,662 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:29:45,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:29:45,166 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2022-03-18 22:29:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-18 22:29:45,166 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-03-18 22:29:45,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:29:45,167 INFO L225 Difference]: With dead ends: 73 [2022-03-18 22:29:45,167 INFO L226 Difference]: Without dead ends: 49 [2022-03-18 22:29:45,168 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2022-03-18 22:29:45,169 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 85 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 22:29:45,169 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 51 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 22:29:45,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-18 22:29:45,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-03-18 22:29:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 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 22:29:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-03-18 22:29:45,182 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2022-03-18 22:29:45,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:29:45,183 INFO L478 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-03-18 22:29:45,183 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 13 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:29:45,183 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-03-18 22:29:45,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-18 22:29:45,185 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:29:45,186 INFO L500 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:29:45,211 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 22:29:45,399 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,SelfDestructingSolverStorable3 [2022-03-18 22:29:45,399 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:29:45,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:29:45,400 INFO L85 PathProgramCache]: Analyzing trace with hash -607664937, now seen corresponding path program 3 times [2022-03-18 22:29:45,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:29:45,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362984020] [2022-03-18 22:29:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:29:45,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:29:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:29:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:45,622 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:29:45,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:29:45,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362984020] [2022-03-18 22:29:45,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362984020] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 22:29:45,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482156165] [2022-03-18 22:29:45,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-18 22:29:45,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:29:45,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:29:45,628 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 22:29:45,662 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 22:29:45,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-03-18 22:29:45,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 22:29:45,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-18 22:29:45,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 22:29:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:29:45,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 22:29:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:29:46,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482156165] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 22:29:46,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 22:29:46,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2022-03-18 22:29:46,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921577512] [2022-03-18 22:29:46,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 22:29:46,212 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-18 22:29:46,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:29:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-18 22:29:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2022-03-18 22:29:46,213 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:29:50,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:29:50,609 INFO L93 Difference]: Finished difference Result 109 states and 132 transitions. [2022-03-18 22:29:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-18 22:29:50,610 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-03-18 22:29:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:29:50,611 INFO L225 Difference]: With dead ends: 109 [2022-03-18 22:29:50,611 INFO L226 Difference]: Without dead ends: 73 [2022-03-18 22:29:50,612 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=643, Invalid=1613, Unknown=0, NotChecked=0, Total=2256 [2022-03-18 22:29:50,613 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 128 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-18 22:29:50,613 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 81 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-18 22:29:50,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-03-18 22:29:50,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-03-18 22:29:50,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 60 states have internal predecessors, (65), 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 22:29:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2022-03-18 22:29:50,623 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 35 [2022-03-18 22:29:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:29:50,624 INFO L478 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2022-03-18 22:29:50,624 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:29:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2022-03-18 22:29:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-03-18 22:29:50,625 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:29:50,625 INFO L500 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:29:50,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-18 22:29:50,839 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:29:50,840 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:29:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:29:50,840 INFO L85 PathProgramCache]: Analyzing trace with hash -943491009, now seen corresponding path program 4 times [2022-03-18 22:29:50,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:29:50,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442057170] [2022-03-18 22:29:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:29:50,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:29:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:51,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:29:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:29:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:29:51,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:29:51,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442057170] [2022-03-18 22:29:51,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442057170] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 22:29:51,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923730834] [2022-03-18 22:29:51,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-18 22:29:51,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:29:51,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:29:51,348 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 22:29:51,349 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 22:29:51,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-18 22:29:51,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 22:29:51,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-18 22:29:51,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 22:29:51,677 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:29:51,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 22:29:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:29:52,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923730834] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 22:29:52,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 22:29:52,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 25] total 50 [2022-03-18 22:29:52,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789882011] [2022-03-18 22:29:52,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 22:29:52,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-18 22:29:52,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:29:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-18 22:29:52,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-03-18 22:29:52,767 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:31:42,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 22:31:42,401 INFO L93 Difference]: Finished difference Result 181 states and 216 transitions. [2022-03-18 22:31:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-18 22:31:42,402 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-03-18 22:31:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 22:31:42,403 INFO L225 Difference]: With dead ends: 181 [2022-03-18 22:31:42,403 INFO L226 Difference]: Without dead ends: 121 [2022-03-18 22:31:42,405 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 110.0s TimeCoverageRelationStatistics Valid=2441, Invalid=6677, Unknown=2, NotChecked=0, Total=9120 [2022-03-18 22:31:42,406 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 221 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-18 22:31:42,406 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 141 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-03-18 22:31:42,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-03-18 22:31:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2022-03-18 22:31:42,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 108 states have (on average 1.0462962962962963) internal successors, (113), 108 states have internal predecessors, (113), 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 22:31:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 118 transitions. [2022-03-18 22:31:42,420 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 118 transitions. Word has length 59 [2022-03-18 22:31:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 22:31:42,421 INFO L478 AbstractCegarLoop]: Abstraction has 114 states and 118 transitions. [2022-03-18 22:31:42,421 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 49 states have internal predecessors, (104), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:31:42,421 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 118 transitions. [2022-03-18 22:31:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-03-18 22:31:42,422 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 22:31:42,423 INFO L500 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 22:31:42,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-18 22:31:42,637 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:31:42,637 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 22:31:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 22:31:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1664764145, now seen corresponding path program 5 times [2022-03-18 22:31:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 22:31:42,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308190544] [2022-03-18 22:31:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 22:31:42,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 22:31:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:31:43,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 22:31:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 22:31:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:31:43,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 22:31:43,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308190544] [2022-03-18 22:31:43,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308190544] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-18 22:31:43,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996807509] [2022-03-18 22:31:43,907 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-18 22:31:43,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 22:31:43,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 22:31:43,912 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 22:31:43,913 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 22:33:47,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-03-18 22:33:47,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 22:33:47,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 95 conjunts are in the unsatisfiable core [2022-03-18 22:33:47,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 22:33:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:33:48,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 22:33:51,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 22:33:51,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996807509] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 22:33:51,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-18 22:33:51,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49, 49] total 98 [2022-03-18 22:33:51,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366848745] [2022-03-18 22:33:51,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-18 22:33:51,602 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-03-18 22:33:51,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 22:33:51,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-03-18 22:33:51,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2496, Invalid=7010, Unknown=0, NotChecked=0, Total=9506 [2022-03-18 22:33:51,605 INFO L87 Difference]: Start difference. First operand 114 states and 118 transitions. Second operand has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 97 states have internal predecessors, (200), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 22:34:28,188 WARN L232 SmtUtils]: Spent 9.44s on a formula simplification. DAG size of input: 196 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 22:35:26,653 WARN L232 SmtUtils]: Spent 11.79s on a formula simplification. DAG size of input: 192 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 22:36:25,441 WARN L232 SmtUtils]: Spent 13.20s on a formula simplification. DAG size of input: 188 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 22:37:29,482 WARN L232 SmtUtils]: Spent 10.95s on a formula simplification. DAG size of input: 184 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 22:38:44,415 WARN L232 SmtUtils]: Spent 14.78s on a formula simplification. DAG size of input: 180 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 22:38:46,433 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-18 22:38:48,444 WARN L833 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~v~0 39) 4294967296) 268435455) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 40 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ 41 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-18 22:39:47,398 WARN L232 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 166 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 22:40:53,257 WARN L232 SmtUtils]: Spent 10.68s on a formula simplification. DAG size of input: 172 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 22:41:48,338 WARN L232 SmtUtils]: Spent 10.47s on a formula simplification. DAG size of input: 168 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 22:41:50,367 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_#NULL.base| |c_old(#NULL.base)|) (< (mod (+ 7 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 24) 4294967296) 268435455) (< (mod (+ c_main_~v~0 36) 4294967296) 268435455) (< (mod (+ c_main_~v~0 6) 4294967296) 268435455) (< (mod (+ c_main_~v~0 17) 4294967296) 268435455) (< (mod (+ c_main_~v~0 13) 4294967296) 268435455) (< (mod (+ c_main_~v~0 18) 4294967296) 268435455) (< (mod (+ 32 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 28) 4294967296) 268435455) (< (mod (+ c_main_~v~0 20) 4294967296) 268435455) (< (mod (+ 29 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 22 c_main_~v~0) 4294967296) 268435455) (< (mod c_main_~v~0 4294967296) 268435455) (< (mod (+ c_main_~v~0 38) 4294967296) 268435455) (< (mod (+ 9 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 4) 4294967296) 268435455) (< (mod (+ c_main_~v~0 26) 4294967296) 268435455) (< (mod (+ 30 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 10) 4294967296) 268435455) (< (mod (+ 19 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 35 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 25) 4294967296) 268435455) (< (mod (+ c_main_~v~0 34) 4294967296) 268435455) (< (mod (+ c_main_~v~0 31) 4294967296) 268435455) (< (mod (+ 23 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 1) 4294967296) 268435455) (< (mod (+ 14 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 37) 4294967296) 268435455) (< (mod (+ c_main_~v~0 12) 4294967296) 268435455) (< (mod (+ c_main_~v~0 33) 4294967296) 268435455) (< (mod (+ 16 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 2 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 11) 4294967296) 268435455) (< (mod (+ c_main_~v~0 15) 4294967296) 268435455) (< (mod (+ 5 c_main_~v~0) 4294967296) 268435455) (< (mod (+ c_main_~v~0 8) 4294967296) 268435455) (< (mod (+ c_main_~v~0 27) 4294967296) 268435455) (= |c_#NULL.offset| |c_old(#NULL.offset)|) (< (mod (+ 3 c_main_~v~0) 4294967296) 268435455) (< (mod (+ 21 c_main_~v~0) 4294967296) 268435455)) is different from false [2022-03-18 22:42:56,993 WARN L232 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 156 DAG size of output: 12 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-18 22:43:52,458 WARN L232 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 160 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)