/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:02:39,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:02:39,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:02:39,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:02:39,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:02:39,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:02:39,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:02:39,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:02:39,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:02:39,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:02:39,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:02:39,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:02:39,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:02:39,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:02:39,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:02:39,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:02:39,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:02:39,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:02:39,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:02:39,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:02:39,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:02:39,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:02:39,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:02:39,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:02:39,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:02:39,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:02:39,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:02:39,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:02:39,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:02:39,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:02:39,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:02:39,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:02:39,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:02:39,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:02:39,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:02:39,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:02:39,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:02:39,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:02:39,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:02:39,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:02:39,682 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:02:39,682 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:02:39,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:02:39,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:02:39,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:02:39,926 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:02:39,929 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:02:39,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2022-01-31 10:02:39,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4440e22f/82e37c550cf9454fb8e3743a5dcf7444/FLAGf462a0c54 [2022-01-31 10:02:40,358 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:02:40,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c [2022-01-31 10:02:40,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4440e22f/82e37c550cf9454fb8e3743a5dcf7444/FLAGf462a0c54 [2022-01-31 10:02:40,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4440e22f/82e37c550cf9454fb8e3743a5dcf7444 [2022-01-31 10:02:40,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:02:40,390 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:02:40,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:02:40,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:02:40,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:02:40,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436bde7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40, skipping insertion in model container [2022-01-31 10:02:40,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:02:40,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:02:40,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c[408,421] [2022-01-31 10:02:40,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:02:40,606 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:02:40,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/zero_sum_const_m4.c[408,421] [2022-01-31 10:02:40,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:02:40,630 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:02:40,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40 WrapperNode [2022-01-31 10:02:40,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:02:40,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:02:40,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:02:40,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:02:40,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:02:40,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:02:40,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:02:40,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:02:40,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40" (1/1) ... [2022-01-31 10:02:40,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:02:40,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:02:40,719 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) [2022-01-31 10:02:40,723 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 [2022-01-31 10:02:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:02:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:02:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:02:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:02:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:02:40,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:02:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:02:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:02:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:02:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:02:40,841 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:02:40,842 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:02:41,042 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:02:41,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:02:41,046 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-31 10:02:41,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:02:41 BoogieIcfgContainer [2022-01-31 10:02:41,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:02:41,048 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:02:41,048 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:02:41,065 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:02:41,068 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:02:41" (1/1) ... [2022-01-31 10:02:41,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:02:41 BasicIcfg [2022-01-31 10:02:41,097 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:02:41,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:02:41,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:02:41,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:02:41,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:02:40" (1/4) ... [2022-01-31 10:02:41,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198c8abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:02:41, skipping insertion in model container [2022-01-31 10:02:41,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:02:40" (2/4) ... [2022-01-31 10:02:41,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198c8abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:02:41, skipping insertion in model container [2022-01-31 10:02:41,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:02:41" (3/4) ... [2022-01-31 10:02:41,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198c8abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:02:41, skipping insertion in model container [2022-01-31 10:02:41,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:02:41" (4/4) ... [2022-01-31 10:02:41,102 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m4.cJordan [2022-01-31 10:02:41,105 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:02:41,106 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:02:41,149 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:02:41,157 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 10:02:41,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:02:41,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 39 states have internal predecessors, (58), 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) [2022-01-31 10:02:41,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 10:02:41,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:02:41,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:02:41,175 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:02:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:02:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash 898449047, now seen corresponding path program 1 times [2022-01-31 10:02:41,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:02:41,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798827095] [2022-01-31 10:02:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:02:41,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:02:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:02:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:41,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:02:41,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:02:41,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798827095] [2022-01-31 10:02:41,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798827095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:02:41,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:02:41,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:02:41,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123425215] [2022-01-31 10:02:41,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:02:41,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:02:41,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:02:41,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:02:41,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:02:41,395 INFO L87 Difference]: Start difference. First operand has 45 states, 37 states have (on average 1.5675675675675675) internal successors, (58), 39 states have internal predecessors, (58), 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 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-01-31 10:02:41,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:02:41,482 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-01-31 10:02:41,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:02:41,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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 28 [2022-01-31 10:02:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:02:41,490 INFO L225 Difference]: With dead ends: 45 [2022-01-31 10:02:41,490 INFO L226 Difference]: Without dead ends: 38 [2022-01-31 10:02:41,491 INFO L932 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 [2022-01-31 10:02:41,496 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 5 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:02:41,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 58 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:02:41,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-01-31 10:02:41,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-01-31 10:02:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 3 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) [2022-01-31 10:02:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2022-01-31 10:02:41,524 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 28 [2022-01-31 10:02:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:02:41,525 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2022-01-31 10:02:41,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-01-31 10:02:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2022-01-31 10:02:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 10:02:41,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:02:41,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:02:41,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:02:41,527 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:02:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:02:41,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1712911518, now seen corresponding path program 1 times [2022-01-31 10:02:41,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:02:41,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000861249] [2022-01-31 10:02:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:02:41,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:02:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:41,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:02:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:41,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:02:41,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:02:41,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000861249] [2022-01-31 10:02:41,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000861249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:02:41,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:02:41,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 10:02:41,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119649911] [2022-01-31 10:02:41,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:02:41,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 10:02:41,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:02:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 10:02:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:02:41,634 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-01-31 10:02:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:02:41,724 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2022-01-31 10:02:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 10:02:41,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 28 [2022-01-31 10:02:41,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:02:41,726 INFO L225 Difference]: With dead ends: 40 [2022-01-31 10:02:41,727 INFO L226 Difference]: Without dead ends: 40 [2022-01-31 10:02:41,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:02:41,731 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:02:41,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 51 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:02:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-01-31 10:02:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-01-31 10:02:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 34 states have internal predecessors, (43), 3 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) [2022-01-31 10:02:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-01-31 10:02:41,735 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 28 [2022-01-31 10:02:41,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:02:41,735 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-01-31 10:02:41,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-01-31 10:02:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-01-31 10:02:41,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 10:02:41,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:02:41,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:02:41,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 10:02:41,737 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:02:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:02:41,737 INFO L85 PathProgramCache]: Analyzing trace with hash -762662373, now seen corresponding path program 1 times [2022-01-31 10:02:41,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:02:41,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275817451] [2022-01-31 10:02:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:02:41,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:02:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:41,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:02:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 10:02:41,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:02:41,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275817451] [2022-01-31 10:02:41,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275817451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:02:41,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:02:41,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:02:41,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920210896] [2022-01-31 10:02:41,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:02:41,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:02:41,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:02:41,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:02:41,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:02:41,813 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-01-31 10:02:41,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:02:41,909 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-01-31 10:02:41,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:02:41,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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 30 [2022-01-31 10:02:41,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:02:41,910 INFO L225 Difference]: With dead ends: 56 [2022-01-31 10:02:41,910 INFO L226 Difference]: Without dead ends: 56 [2022-01-31 10:02:41,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:02:41,911 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 41 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:02:41,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 29 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:02:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-01-31 10:02:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2022-01-31 10:02:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 42 states have internal predecessors, (51), 3 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) [2022-01-31 10:02:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-01-31 10:02:41,916 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 30 [2022-01-31 10:02:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:02:41,917 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-01-31 10:02:41,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 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) [2022-01-31 10:02:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-01-31 10:02:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-31 10:02:41,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:02:41,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:02:41,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-31 10:02:41,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:02:41,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:02:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -145729909, now seen corresponding path program 1 times [2022-01-31 10:02:41,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:02:41,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246019457] [2022-01-31 10:02:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:02:41,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:02:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:02:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 10:02:42,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:02:42,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246019457] [2022-01-31 10:02:42,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246019457] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:02:42,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396333744] [2022-01-31 10:02:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:02:42,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:02:42,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:02:42,020 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) [2022-01-31 10:02:42,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 10:02:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:42,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:02:42,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:02:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 10:02:42,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:02:42,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 10:02:42,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396333744] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:02:42,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 10:02:42,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-01-31 10:02:42,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220439729] [2022-01-31 10:02:42,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 10:02:42,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 10:02:42,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:02:42,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 10:02:42,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-31 10:02:42,382 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 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) [2022-01-31 10:02:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:02:42,476 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-01-31 10:02:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:02:42,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 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 46 [2022-01-31 10:02:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:02:42,478 INFO L225 Difference]: With dead ends: 50 [2022-01-31 10:02:42,478 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 10:02:42,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-31 10:02:42,484 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:02:42,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 58 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:02:42,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 10:02:42,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-01-31 10:02:42,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 3 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) [2022-01-31 10:02:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-01-31 10:02:42,497 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 46 [2022-01-31 10:02:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:02:42,497 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-01-31 10:02:42,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 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) [2022-01-31 10:02:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-01-31 10:02:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-31 10:02:42,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:02:42,500 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:02:42,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 10:02:42,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:02:42,710 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:02:42,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:02:42,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1075933496, now seen corresponding path program 2 times [2022-01-31 10:02:42,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:02:42,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654871051] [2022-01-31 10:02:42,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:02:42,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:02:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:02:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 10:02:42,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:02:42,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654871051] [2022-01-31 10:02:42,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654871051] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:02:42,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70370529] [2022-01-31 10:02:42,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:02:42,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:02:42,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:02:42,792 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) [2022-01-31 10:02:42,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 10:02:42,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:02:42,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:02:42,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:02:42,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:02:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 10:02:43,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:02:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-31 10:02:43,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70370529] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:02:43,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 10:02:43,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-01-31 10:02:43,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585608407] [2022-01-31 10:02:43,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 10:02:43,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 10:02:43,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:02:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 10:02:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-31 10:02:43,101 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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) [2022-01-31 10:02:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:02:43,236 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2022-01-31 10:02:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 10:02:43,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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 48 [2022-01-31 10:02:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:02:43,237 INFO L225 Difference]: With dead ends: 74 [2022-01-31 10:02:43,237 INFO L226 Difference]: Without dead ends: 74 [2022-01-31 10:02:43,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-31 10:02:43,238 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 47 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:02:43,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 37 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:02:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-31 10:02:43,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2022-01-31 10:02:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 3 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) [2022-01-31 10:02:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2022-01-31 10:02:43,241 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 48 [2022-01-31 10:02:43,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:02:43,242 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2022-01-31 10:02:43,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 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) [2022-01-31 10:02:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2022-01-31 10:02:43,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-31 10:02:43,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:02:43,242 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:02:43,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-31 10:02:43,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:02:43,454 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:02:43,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:02:43,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1914181944, now seen corresponding path program 3 times [2022-01-31 10:02:43,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:02:43,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692023218] [2022-01-31 10:02:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:02:43,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:02:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:02:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:02:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:02:45,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:02:45,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692023218] [2022-01-31 10:02:45,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692023218] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:02:45,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398729826] [2022-01-31 10:02:45,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 10:02:45,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:02:45,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:02:45,172 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) [2022-01-31 10:02:45,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 10:02:45,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 10:02:45,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:02:45,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 83 conjunts are in the unsatisfiable core [2022-01-31 10:02:45,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:02:50,516 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:02:50,516 INFO L387 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 17 treesize of output 18 [2022-01-31 10:02:50,947 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:02:50,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:03:54,180 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:03:54,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 243 [2022-01-31 10:04:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:04:11,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398729826] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:04:11,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 10:04:11,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 47, 49] total 127 [2022-01-31 10:04:11,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586167468] [2022-01-31 10:04:11,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 10:04:11,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2022-01-31 10:04:11,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:04:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2022-01-31 10:04:11,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=859, Invalid=15130, Unknown=13, NotChecked=0, Total=16002 [2022-01-31 10:04:11,873 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 127 states, 127 states have (on average 1.3464566929133859) internal successors, (171), 124 states have internal predecessors, (171), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 10:04:37,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:04:37,773 INFO L93 Difference]: Finished difference Result 163 states and 187 transitions. [2022-01-31 10:04:37,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-31 10:04:37,774 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 1.3464566929133859) internal successors, (171), 124 states have internal predecessors, (171), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-01-31 10:04:37,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:04:37,775 INFO L225 Difference]: With dead ends: 163 [2022-01-31 10:04:37,776 INFO L226 Difference]: Without dead ends: 160 [2022-01-31 10:04:37,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 42 SyntacticMatches, 18 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6901 ImplicationChecksByTransitivity, 86.7s TimeCoverageRelationStatistics Valid=1772, Invalid=29009, Unknown=19, NotChecked=0, Total=30800 [2022-01-31 10:04:37,781 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 27 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1472 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-31 10:04:37,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 447 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 771 Invalid, 0 Unknown, 1472 Unchecked, 0.4s Time] [2022-01-31 10:04:37,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-31 10:04:37,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 106. [2022-01-31 10:04:37,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 101 states have internal predecessors, (117), 3 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) [2022-01-31 10:04:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2022-01-31 10:04:37,803 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 64 [2022-01-31 10:04:37,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:04:37,804 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2022-01-31 10:04:37,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 1.3464566929133859) internal successors, (171), 124 states have internal predecessors, (171), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 10:04:37,804 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2022-01-31 10:04:37,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-31 10:04:37,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:04:37,805 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:04:37,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-31 10:04:38,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:04:38,008 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:04:38,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:04:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2099768170, now seen corresponding path program 4 times [2022-01-31 10:04:38,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:04:38,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429597935] [2022-01-31 10:04:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:04:38,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:04:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:04:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:04:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:04:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 10:04:38,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:04:38,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429597935] [2022-01-31 10:04:38,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429597935] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:04:38,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608711790] [2022-01-31 10:04:38,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 10:04:38,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:04:38,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:04:38,144 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) [2022-01-31 10:04:38,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 10:04:38,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 10:04:38,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:04:38,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:04:38,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:04:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 10:04:38,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:04:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 10:04:38,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608711790] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:04:38,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 10:04:38,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 15 [2022-01-31 10:04:38,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153493749] [2022-01-31 10:04:38,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 10:04:38,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 10:04:38,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:04:38,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 10:04:38,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-31 10:04:38,433 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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) [2022-01-31 10:04:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:04:38,718 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2022-01-31 10:04:38,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 10:04:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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 66 [2022-01-31 10:04:38,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:04:38,720 INFO L225 Difference]: With dead ends: 188 [2022-01-31 10:04:38,720 INFO L226 Difference]: Without dead ends: 139 [2022-01-31 10:04:38,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-01-31 10:04:38,721 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 145 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:04:38,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 46 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:04:38,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-31 10:04:38,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 117. [2022-01-31 10:04:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.1339285714285714) internal successors, (127), 112 states have internal predecessors, (127), 3 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) [2022-01-31 10:04:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2022-01-31 10:04:38,725 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 66 [2022-01-31 10:04:38,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:04:38,725 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2022-01-31 10:04:38,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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) [2022-01-31 10:04:38,726 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2022-01-31 10:04:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-31 10:04:38,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:04:38,726 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:04:38,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 10:04:38,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:04:38,935 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:04:38,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:04:38,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1926740813, now seen corresponding path program 5 times [2022-01-31 10:04:38,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:04:38,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092918316] [2022-01-31 10:04:38,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:04:38,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:04:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:04:39,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:04:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:04:39,019 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-31 10:04:39,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:04:39,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092918316] [2022-01-31 10:04:39,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092918316] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:04:39,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168983941] [2022-01-31 10:04:39,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 10:04:39,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:04:39,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:04:39,021 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) [2022-01-31 10:04:39,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 10:04:39,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-31 10:04:39,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:04:39,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:04:39,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:04:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-31 10:04:39,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:04:39,319 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-31 10:04:39,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168983941] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:04:39,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 10:04:39,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 15 [2022-01-31 10:04:39,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979440703] [2022-01-31 10:04:39,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 10:04:39,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 10:04:39,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:04:39,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 10:04:39,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-31 10:04:39,320 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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) [2022-01-31 10:04:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:04:39,566 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2022-01-31 10:04:39,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 10:04:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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 68 [2022-01-31 10:04:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:04:39,567 INFO L225 Difference]: With dead ends: 91 [2022-01-31 10:04:39,567 INFO L226 Difference]: Without dead ends: 91 [2022-01-31 10:04:39,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-01-31 10:04:39,567 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 174 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 10:04:39,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 39 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 10:04:39,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-01-31 10:04:39,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2022-01-31 10:04:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 78 states have internal predecessors, (87), 3 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) [2022-01-31 10:04:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2022-01-31 10:04:39,571 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 68 [2022-01-31 10:04:39,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:04:39,574 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2022-01-31 10:04:39,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 14 states have internal predecessors, (61), 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) [2022-01-31 10:04:39,575 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2022-01-31 10:04:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-31 10:04:39,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:04:39,577 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:04:39,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-31 10:04:39,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:04:39,793 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:04:39,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:04:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash 519408805, now seen corresponding path program 6 times [2022-01-31 10:04:39,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:04:39,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714692651] [2022-01-31 10:04:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:04:39,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:04:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:04:43,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:04:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:04:43,663 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:04:43,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:04:43,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714692651] [2022-01-31 10:04:43,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714692651] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 10:04:43,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238524094] [2022-01-31 10:04:43,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 10:04:43,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:04:43,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:04:43,665 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:04:43,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 10:04:43,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-31 10:04:43,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:04:43,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 114 conjunts are in the unsatisfiable core [2022-01-31 10:04:43,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:04:43,971 INFO L387 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 15 treesize of output 11 [2022-01-31 10:04:52,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:04:52,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:04:52,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:04:52,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:04:52,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:04:52,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:04:52,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:04:52,078 INFO L353 Elim1Store]: treesize reduction 6, result has 68.4 percent of original size [2022-01-31 10:04:52,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 28 [2022-01-31 10:04:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:04:52,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:05:31,188 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 206 treesize of output 182 [2022-01-31 10:05:31,271 INFO L353 Elim1Store]: treesize reduction 214, result has 7.4 percent of original size [2022-01-31 10:05:31,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 6618 treesize of output 4459 [2022-01-31 10:05:31,304 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-31 10:05:31,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 10:05:31,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:05:31,522 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-31 10:05:31,524 INFO L158 Benchmark]: Toolchain (without parser) took 171133.58ms. Allocated memory was 228.6MB in the beginning and 396.4MB in the end (delta: 167.8MB). Free memory was 178.6MB in the beginning and 251.3MB in the end (delta: -72.7MB). Peak memory consumption was 95.9MB. Max. memory is 8.0GB. [2022-01-31 10:05:31,524 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 228.6MB. Free memory is still 195.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 10:05:31,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.74ms. Allocated memory is still 228.6MB. Free memory was 178.4MB in the beginning and 204.0MB in the end (delta: -25.7MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. [2022-01-31 10:05:31,524 INFO L158 Benchmark]: Boogie Preprocessor took 37.56ms. Allocated memory is still 228.6MB. Free memory was 204.0MB in the beginning and 202.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 10:05:31,524 INFO L158 Benchmark]: RCFGBuilder took 378.11ms. Allocated memory is still 228.6MB. Free memory was 201.9MB in the beginning and 188.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 10:05:31,524 INFO L158 Benchmark]: IcfgTransformer took 48.77ms. Allocated memory is still 228.6MB. Free memory was 188.9MB in the beginning and 187.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 10:05:31,525 INFO L158 Benchmark]: TraceAbstraction took 170425.43ms. Allocated memory was 228.6MB in the beginning and 396.4MB in the end (delta: 167.8MB). Free memory was 186.8MB in the beginning and 251.3MB in the end (delta: -64.5MB). Peak memory consumption was 103.7MB. Max. memory is 8.0GB. [2022-01-31 10:05:31,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 228.6MB. Free memory is still 195.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 238.74ms. Allocated memory is still 228.6MB. Free memory was 178.4MB in the beginning and 204.0MB in the end (delta: -25.7MB). Peak memory consumption was 6.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.56ms. Allocated memory is still 228.6MB. Free memory was 204.0MB in the beginning and 202.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 378.11ms. Allocated memory is still 228.6MB. Free memory was 201.9MB in the beginning and 188.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * IcfgTransformer took 48.77ms. Allocated memory is still 228.6MB. Free memory was 188.9MB in the beginning and 187.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 170425.43ms. Allocated memory was 228.6MB in the beginning and 396.4MB in the end (delta: 167.8MB). Free memory was 186.8MB in the beginning and 251.3MB in the end (delta: -64.5MB). Peak memory consumption was 103.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-31 10:05:31,735 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-01-31 10:05:31,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...