/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/nla-digbench-scaling/hard2_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-17 17:35:44,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-17 17:35:44,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-17 17:35:44,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-17 17:35:44,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-17 17:35:44,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-17 17:35:44,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-17 17:35:44,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-17 17:35:44,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-17 17:35:44,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-17 17:35:44,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-17 17:35:44,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-17 17:35:44,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-17 17:35:44,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-17 17:35:44,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-17 17:35:44,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-17 17:35:44,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-17 17:35:44,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-17 17:35:44,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-17 17:35:44,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-17 17:35:44,684 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-17 17:35:44,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-17 17:35:44,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-17 17:35:44,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-17 17:35:44,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-17 17:35:44,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-17 17:35:44,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-17 17:35:44,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-17 17:35:44,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-17 17:35:44,698 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-17 17:35:44,707 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-17 17:35:44,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-17 17:35:44,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-17 17:35:44,709 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-17 17:35:44,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-17 17:35:44,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-17 17:35:44,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-17 17:35:44,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-17 17:35:44,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-17 17:35:44,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-17 17:35:44,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-17 17:35:44,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-17 17:35:44,710 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-17 17:35:44,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-17 17:35:44,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-17 17:35:44,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-17 17:35:44,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-17 17:35:44,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-17 17:35:44,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 17:35:44,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-17 17:35:44,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-17 17:35:44,712 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-17 17:35:44,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-17 17:35:44,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-17 17:35:44,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-17 17:35:44,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-17 17:35:44,919 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-17 17:35:44,919 INFO L275 PluginConnector]: CDTParser initialized [2022-03-17 17:35:44,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound5.c [2022-03-17 17:35:44,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a3fe3c4/87c60d2ea7cb42ed82a81adc563df18f/FLAG9cbedc16a [2022-03-17 17:35:45,288 INFO L306 CDTParser]: Found 1 translation units. [2022-03-17 17:35:45,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound5.c [2022-03-17 17:35:45,293 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a3fe3c4/87c60d2ea7cb42ed82a81adc563df18f/FLAG9cbedc16a [2022-03-17 17:35:45,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48a3fe3c4/87c60d2ea7cb42ed82a81adc563df18f [2022-03-17 17:35:45,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-17 17:35:45,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-17 17:35:45,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-17 17:35:45,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-17 17:35:45,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-17 17:35:45,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b288395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45, skipping insertion in model container [2022-03-17 17:35:45,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-17 17:35:45,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-17 17:35:45,481 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound5.c[526,539] [2022-03-17 17:35:45,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 17:35:45,508 INFO L203 MainTranslator]: Completed pre-run [2022-03-17 17:35:45,519 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound5.c[526,539] [2022-03-17 17:35:45,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-17 17:35:45,544 INFO L208 MainTranslator]: Completed translation [2022-03-17 17:35:45,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45 WrapperNode [2022-03-17 17:35:45,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-17 17:35:45,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-17 17:35:45,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-17 17:35:45,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-17 17:35:45,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-17 17:35:45,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-17 17:35:45,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-17 17:35:45,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-17 17:35:45,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-17 17:35:45,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:45,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-17 17:35:45,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-17 17:35:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-17 17:35:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-17 17:35:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-17 17:35:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-17 17:35:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-17 17:35:45,628 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-17 17:35:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-17 17:35:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-17 17:35:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-17 17:35:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-17 17:35:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-17 17:35:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-17 17:35:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-17 17:35:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-17 17:35:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-17 17:35:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-17 17:35:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-17 17:35:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-17 17:35:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-17 17:35:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-17 17:35:45,675 INFO L234 CfgBuilder]: Building ICFG [2022-03-17 17:35:45,676 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-17 17:35:45,825 INFO L275 CfgBuilder]: Performing block encoding [2022-03-17 17:35:45,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-17 17:35:45,830 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-17 17:35:45,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 05:35:45 BoogieIcfgContainer [2022-03-17 17:35:45,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-17 17:35:45,832 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-17 17:35:45,832 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-17 17:35:45,833 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-17 17:35:45,847 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 05:35:45" (1/1) ... [2022-03-17 17:35:45,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 05:35:45 BasicIcfg [2022-03-17 17:35:45,865 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-17 17:35:45,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-17 17:35:45,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-17 17:35:45,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-17 17:35:45,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 05:35:45" (1/4) ... [2022-03-17 17:35:45,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f3717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:35:45, skipping insertion in model container [2022-03-17 17:35:45,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 05:35:45" (2/4) ... [2022-03-17 17:35:45,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f3717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 05:35:45, skipping insertion in model container [2022-03-17 17:35:45,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.03 05:35:45" (3/4) ... [2022-03-17 17:35:45,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25f3717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 05:35:45, skipping insertion in model container [2022-03-17 17:35:45,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 17.03 05:35:45" (4/4) ... [2022-03-17 17:35:45,870 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound5.cJordan [2022-03-17 17:35:45,874 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-17 17:35:45,874 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-17 17:35:45,902 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-17 17:35:45,907 INFO L340 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 [2022-03-17 17:35:45,908 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-17 17:35:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-17 17:35:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 17:35:45,922 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:45,922 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:45,923 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:45,926 INFO L85 PathProgramCache]: Analyzing trace with hash 121155216, now seen corresponding path program 1 times [2022-03-17 17:35:45,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:45,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518032737] [2022-03-17 17:35:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 17:35:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 17:35:46,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:46,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518032737] [2022-03-17 17:35:46,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518032737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:35:46,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:35:46,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-17 17:35:46,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934646644] [2022-03-17 17:35:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:35:46,065 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-17 17:35:46,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-17 17:35:46,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 17:35:46,085 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 17:35:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:46,157 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-03-17 17:35:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-17 17:35:46,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2022-03-17 17:35:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:46,164 INFO L225 Difference]: With dead ends: 32 [2022-03-17 17:35:46,164 INFO L226 Difference]: Without dead ends: 27 [2022-03-17 17:35:46,165 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-17 17:35:46,167 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:46,168 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 44 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:35:46,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-17 17:35:46,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-03-17 17:35:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 9 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-17 17:35:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2022-03-17 17:35:46,192 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 12 [2022-03-17 17:35:46,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:46,193 INFO L478 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2022-03-17 17:35:46,193 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 17:35:46,193 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2022-03-17 17:35:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-17 17:35:46,193 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:46,194 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:46,194 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-17 17:35:46,194 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:46,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:46,195 INFO L85 PathProgramCache]: Analyzing trace with hash 152644303, now seen corresponding path program 1 times [2022-03-17 17:35:46,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:46,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419830613] [2022-03-17 17:35:46,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:46,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:46,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 17:35:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 17:35:46,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:46,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419830613] [2022-03-17 17:35:46,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419830613] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:35:46,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:35:46,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 17:35:46,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797390200] [2022-03-17 17:35:46,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:35:46,322 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 17:35:46,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 17:35:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 17:35:46,323 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 17:35:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:46,471 INFO L93 Difference]: Finished difference Result 39 states and 54 transitions. [2022-03-17 17:35:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 17:35:46,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2022-03-17 17:35:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:46,473 INFO L225 Difference]: With dead ends: 39 [2022-03-17 17:35:46,474 INFO L226 Difference]: Without dead ends: 39 [2022-03-17 17:35:46,474 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 17:35:46,475 INFO L912 BasicCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:46,475 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 91 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 17:35:46,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-17 17:35:46,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2022-03-17 17:35:46,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-17 17:35:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-03-17 17:35:46,486 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 12 [2022-03-17 17:35:46,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:46,486 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-03-17 17:35:46,487 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-17 17:35:46,487 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-03-17 17:35:46,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-17 17:35:46,487 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:46,487 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:46,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-17 17:35:46,488 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:46,490 INFO L85 PathProgramCache]: Analyzing trace with hash -400958603, now seen corresponding path program 1 times [2022-03-17 17:35:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:46,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619767728] [2022-03-17 17:35:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:46,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 17:35:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 17:35:46,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:46,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619767728] [2022-03-17 17:35:46,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619767728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:35:46,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:35:46,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-17 17:35:46,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754985479] [2022-03-17 17:35:46,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:35:46,559 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 17:35:46,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:46,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 17:35:46,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 17:35:46,560 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-03-17 17:35:46,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:46,657 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2022-03-17 17:35:46,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-17 17:35:46,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) Word has length 14 [2022-03-17 17:35:46,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:46,661 INFO L225 Difference]: With dead ends: 32 [2022-03-17 17:35:46,661 INFO L226 Difference]: Without dead ends: 32 [2022-03-17 17:35:46,662 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-17 17:35:46,664 INFO L912 BasicCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:46,664 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 73 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 17:35:46,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-17 17:35:46,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-03-17 17:35:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-17 17:35:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-03-17 17:35:46,668 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 14 [2022-03-17 17:35:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:46,668 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-03-17 17:35:46,668 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-03-17 17:35:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-03-17 17:35:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-17 17:35:46,669 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:46,669 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:46,669 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-17 17:35:46,669 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:46,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash 185978583, now seen corresponding path program 1 times [2022-03-17 17:35:46,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:46,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563255368] [2022-03-17 17:35:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:46,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-17 17:35:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-17 17:35:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-17 17:35:46,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:46,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563255368] [2022-03-17 17:35:46,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563255368] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:35:46,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:35:46,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-17 17:35:46,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034078350] [2022-03-17 17:35:46,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:35:46,736 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-17 17:35:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:46,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-17 17:35:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-17 17:35:46,737 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 17:35:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:46,828 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2022-03-17 17:35:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-17 17:35:46,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-03-17 17:35:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:46,832 INFO L225 Difference]: With dead ends: 44 [2022-03-17 17:35:46,833 INFO L226 Difference]: Without dead ends: 44 [2022-03-17 17:35:46,833 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-17 17:35:46,841 INFO L912 BasicCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:46,841 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 84 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 17:35:46,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-17 17:35:46,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2022-03-17 17:35:46,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 23 states have internal predecessors, (28), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-17 17:35:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-03-17 17:35:46,847 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 17 [2022-03-17 17:35:46,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:46,848 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-03-17 17:35:46,848 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-17 17:35:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-03-17 17:35:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-17 17:35:46,848 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:46,848 INFO L500 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:46,849 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-17 17:35:46,849 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -820589269, now seen corresponding path program 1 times [2022-03-17 17:35:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:46,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064067310] [2022-03-17 17:35:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:46,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:46,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163453878] [2022-03-17 17:35:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:46,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:46,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:46,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:46,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-17 17:35:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:46,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-17 17:35:46,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-17 17:35:47,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 17:35:47,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:47,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064067310] [2022-03-17 17:35:47,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:47,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163453878] [2022-03-17 17:35:47,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163453878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:35:47,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:35:47,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 17:35:47,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586564376] [2022-03-17 17:35:47,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:35:47,061 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 17:35:47,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:47,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 17:35:47,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 17:35:47,061 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-17 17:35:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:47,102 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-03-17 17:35:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 17:35:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-03-17 17:35:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:47,104 INFO L225 Difference]: With dead ends: 51 [2022-03-17 17:35:47,104 INFO L226 Difference]: Without dead ends: 50 [2022-03-17 17:35:47,106 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-17 17:35:47,108 INFO L912 BasicCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:47,108 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 131 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:35:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-17 17:35:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-03-17 17:35:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 31 states have internal predecessors, (37), 15 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-17 17:35:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-03-17 17:35:47,117 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 22 [2022-03-17 17:35:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:47,117 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-03-17 17:35:47,117 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-03-17 17:35:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-03-17 17:35:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-17 17:35:47,118 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:47,118 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:47,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-17 17:35:47,318 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:47,319 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:47,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:47,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1259710898, now seen corresponding path program 1 times [2022-03-17 17:35:47,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:47,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579362787] [2022-03-17 17:35:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:47,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:47,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:47,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178141589] [2022-03-17 17:35:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:47,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:47,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:47,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:47,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-17 17:35:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:47,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-17 17:35:47,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-17 17:35:47,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 17:35:47,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:47,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579362787] [2022-03-17 17:35:47,440 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:47,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178141589] [2022-03-17 17:35:47,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178141589] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:35:47,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:35:47,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 17:35:47,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091022643] [2022-03-17 17:35:47,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:35:47,441 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 17:35:47,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:47,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 17:35:47,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 17:35:47,441 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 17:35:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:47,459 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2022-03-17 17:35:47,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 17:35:47,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-03-17 17:35:47,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:47,460 INFO L225 Difference]: With dead ends: 63 [2022-03-17 17:35:47,460 INFO L226 Difference]: Without dead ends: 63 [2022-03-17 17:35:47,460 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-17 17:35:47,461 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:47,461 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 124 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:35:47,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-17 17:35:47,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-03-17 17:35:47,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 40 states have internal predecessors, (45), 15 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-17 17:35:47,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-03-17 17:35:47,465 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 30 [2022-03-17 17:35:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:47,465 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-03-17 17:35:47,465 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 17:35:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-03-17 17:35:47,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-17 17:35:47,466 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:47,466 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:47,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-17 17:35:47,683 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-03-17 17:35:47,683 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1260813165, now seen corresponding path program 1 times [2022-03-17 17:35:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:47,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801917736] [2022-03-17 17:35:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:47,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:47,691 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:47,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741489133] [2022-03-17 17:35:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:47,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:47,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:47,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:47,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-17 17:35:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:47,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-17 17:35:47,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-17 17:35:47,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 17:35:47,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:47,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801917736] [2022-03-17 17:35:47,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:47,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741489133] [2022-03-17 17:35:47,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741489133] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:35:47,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:35:47,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 17:35:47,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907174372] [2022-03-17 17:35:47,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:35:47,837 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 17:35:47,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:47,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 17:35:47,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-17 17:35:47,838 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 17:35:47,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:47,873 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2022-03-17 17:35:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 17:35:47,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2022-03-17 17:35:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:47,875 INFO L225 Difference]: With dead ends: 74 [2022-03-17 17:35:47,875 INFO L226 Difference]: Without dead ends: 64 [2022-03-17 17:35:47,875 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-17 17:35:47,876 INFO L912 BasicCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:47,877 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 103 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:35:47,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-17 17:35:47,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2022-03-17 17:35:47,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 41 states have internal predecessors, (48), 15 states have call successors, (15), 9 states have call predecessors, (15), 8 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-17 17:35:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2022-03-17 17:35:47,899 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 30 [2022-03-17 17:35:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:47,899 INFO L478 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2022-03-17 17:35:47,899 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 17:35:47,899 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2022-03-17 17:35:47,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-17 17:35:47,900 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:47,900 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:47,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-17 17:35:48,100 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:48,101 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:48,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:48,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1811137592, now seen corresponding path program 1 times [2022-03-17 17:35:48,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:48,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526454150] [2022-03-17 17:35:48,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:48,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:48,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:48,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [284698705] [2022-03-17 17:35:48,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:48,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:48,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:48,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:48,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-17 17:35:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:48,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-17 17:35:48,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-03-17 17:35:48,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:35:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-17 17:35:48,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:48,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526454150] [2022-03-17 17:35:48,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:48,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284698705] [2022-03-17 17:35:48,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284698705] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 17:35:48,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 17:35:48,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-03-17 17:35:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668103276] [2022-03-17 17:35:48,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 17:35:48,302 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 17:35:48,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:48,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 17:35:48,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-03-17 17:35:48,303 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 6 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-03-17 17:35:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:48,366 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2022-03-17 17:35:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 17:35:48,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 6 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 37 [2022-03-17 17:35:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:48,370 INFO L225 Difference]: With dead ends: 119 [2022-03-17 17:35:48,370 INFO L226 Difference]: Without dead ends: 119 [2022-03-17 17:35:48,370 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-17 17:35:48,370 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 41 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:48,371 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 152 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:35:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-03-17 17:35:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2022-03-17 17:35:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 74 states have internal predecessors, (86), 25 states have call successors, (25), 16 states have call predecessors, (25), 15 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-17 17:35:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2022-03-17 17:35:48,376 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 37 [2022-03-17 17:35:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:48,376 INFO L478 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2022-03-17 17:35:48,377 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 6 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2022-03-17 17:35:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2022-03-17 17:35:48,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-17 17:35:48,377 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:48,377 INFO L500 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:48,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-17 17:35:48,597 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:48,597 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:48,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:48,598 INFO L85 PathProgramCache]: Analyzing trace with hash -599722260, now seen corresponding path program 1 times [2022-03-17 17:35:48,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:48,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764328555] [2022-03-17 17:35:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:48,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:48,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:48,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633339526] [2022-03-17 17:35:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:48,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:48,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:48,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:48,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-17 17:35:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:48,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-17 17:35:48,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-03-17 17:35:48,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:35:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-03-17 17:35:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:48,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764328555] [2022-03-17 17:35:48,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:48,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633339526] [2022-03-17 17:35:48,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633339526] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-17 17:35:48,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-17 17:35:48,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-03-17 17:35:48,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258251759] [2022-03-17 17:35:48,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:35:48,889 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 17:35:48,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 17:35:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-17 17:35:48,889 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 17:35:48,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:48,923 INFO L93 Difference]: Finished difference Result 127 states and 150 transitions. [2022-03-17 17:35:48,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 17:35:48,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-03-17 17:35:48,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:48,924 INFO L225 Difference]: With dead ends: 127 [2022-03-17 17:35:48,924 INFO L226 Difference]: Without dead ends: 125 [2022-03-17 17:35:48,925 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-17 17:35:48,925 INFO L912 BasicCegarLoop]: 34 mSDtfsCounter, 11 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:48,925 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 113 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:35:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-03-17 17:35:48,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2022-03-17 17:35:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 81 states have internal predecessors, (92), 27 states have call successors, (27), 18 states have call predecessors, (27), 16 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-03-17 17:35:48,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 143 transitions. [2022-03-17 17:35:48,930 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 143 transitions. Word has length 40 [2022-03-17 17:35:48,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:48,931 INFO L478 AbstractCegarLoop]: Abstraction has 122 states and 143 transitions. [2022-03-17 17:35:48,931 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-17 17:35:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 143 transitions. [2022-03-17 17:35:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-03-17 17:35:48,932 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:48,932 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:48,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-17 17:35:49,152 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:49,153 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:49,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash 560903707, now seen corresponding path program 1 times [2022-03-17 17:35:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:49,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951100351] [2022-03-17 17:35:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:49,169 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:49,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281338075] [2022-03-17 17:35:49,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:49,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:49,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:49,171 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) [2022-03-17 17:35:49,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-17 17:35:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:49,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-17 17:35:49,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 36 proven. 42 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-03-17 17:35:49,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:35:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-03-17 17:35:49,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:49,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951100351] [2022-03-17 17:35:49,401 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:49,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281338075] [2022-03-17 17:35:49,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281338075] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 17:35:49,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 17:35:49,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-03-17 17:35:49,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029524111] [2022-03-17 17:35:49,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 17:35:49,402 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 17:35:49,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:49,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 17:35:49,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-17 17:35:49,403 INFO L87 Difference]: Start difference. First operand 122 states and 143 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-03-17 17:35:49,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:49,472 INFO L93 Difference]: Finished difference Result 177 states and 208 transitions. [2022-03-17 17:35:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 17:35:49,472 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 53 [2022-03-17 17:35:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:49,473 INFO L225 Difference]: With dead ends: 177 [2022-03-17 17:35:49,473 INFO L226 Difference]: Without dead ends: 177 [2022-03-17 17:35:49,474 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-17 17:35:49,474 INFO L912 BasicCegarLoop]: 54 mSDtfsCounter, 52 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:49,474 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 203 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 17:35:49,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-03-17 17:35:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 172. [2022-03-17 17:35:49,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 117 states have internal predecessors, (131), 39 states have call successors, (39), 23 states have call predecessors, (39), 21 states have return successors, (35), 31 states have call predecessors, (35), 35 states have call successors, (35) [2022-03-17 17:35:49,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 205 transitions. [2022-03-17 17:35:49,481 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 205 transitions. Word has length 53 [2022-03-17 17:35:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:49,481 INFO L478 AbstractCegarLoop]: Abstraction has 172 states and 205 transitions. [2022-03-17 17:35:49,481 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-03-17 17:35:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 205 transitions. [2022-03-17 17:35:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-17 17:35:49,482 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:49,482 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 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] [2022-03-17 17:35:49,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-17 17:35:49,701 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:49,701 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:49,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:49,702 INFO L85 PathProgramCache]: Analyzing trace with hash -453219492, now seen corresponding path program 1 times [2022-03-17 17:35:49,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:49,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175790496] [2022-03-17 17:35:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:49,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:49,709 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:49,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248858591] [2022-03-17 17:35:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:49,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:49,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:49,710 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:49,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-17 17:35:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:49,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-17 17:35:49,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-17 17:35:50,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:35:50,828 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-03-17 17:35:50,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:50,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175790496] [2022-03-17 17:35:50,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:50,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248858591] [2022-03-17 17:35:50,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248858591] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 17:35:50,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 17:35:50,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-03-17 17:35:50,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213269285] [2022-03-17 17:35:50,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 17:35:50,829 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-17 17:35:50,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:50,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-17 17:35:50,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-17 17:35:50,830 INFO L87 Difference]: Start difference. First operand 172 states and 205 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-17 17:35:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:54,845 INFO L93 Difference]: Finished difference Result 232 states and 291 transitions. [2022-03-17 17:35:54,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-17 17:35:54,845 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 62 [2022-03-17 17:35:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:54,846 INFO L225 Difference]: With dead ends: 232 [2022-03-17 17:35:54,846 INFO L226 Difference]: Without dead ends: 225 [2022-03-17 17:35:54,847 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-03-17 17:35:54,847 INFO L912 BasicCegarLoop]: 50 mSDtfsCounter, 52 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:54,847 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 261 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-17 17:35:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-03-17 17:35:54,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 212. [2022-03-17 17:35:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 141 states have (on average 1.2198581560283688) internal successors, (172), 147 states have internal predecessors, (172), 45 states have call successors, (45), 26 states have call predecessors, (45), 25 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-17 17:35:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 259 transitions. [2022-03-17 17:35:54,854 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 259 transitions. Word has length 62 [2022-03-17 17:35:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:54,854 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 259 transitions. [2022-03-17 17:35:54,854 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-17 17:35:54,854 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 259 transitions. [2022-03-17 17:35:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-17 17:35:54,855 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:54,855 INFO L500 BasicCegarLoop]: trace histogram [11, 10, 10, 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] [2022-03-17 17:35:54,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-17 17:35:55,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:55,068 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:55,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash 929445032, now seen corresponding path program 1 times [2022-03-17 17:35:55,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:55,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134689036] [2022-03-17 17:35:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:55,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:55,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:55,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553067190] [2022-03-17 17:35:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:55,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:55,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:55,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:55,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-17 17:35:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:55,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-17 17:35:55,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-03-17 17:35:55,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:35:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-03-17 17:35:55,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:55,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134689036] [2022-03-17 17:35:55,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:55,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553067190] [2022-03-17 17:35:55,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553067190] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 17:35:55,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 17:35:55,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2022-03-17 17:35:55,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209694332] [2022-03-17 17:35:55,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 17:35:55,766 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 17:35:55,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 17:35:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-03-17 17:35:55,766 INFO L87 Difference]: Start difference. First operand 212 states and 259 transitions. Second operand has 16 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 8 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-03-17 17:35:56,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:56,085 INFO L93 Difference]: Finished difference Result 215 states and 249 transitions. [2022-03-17 17:35:56,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 17:35:56,085 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 8 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 73 [2022-03-17 17:35:56,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:56,086 INFO L225 Difference]: With dead ends: 215 [2022-03-17 17:35:56,086 INFO L226 Difference]: Without dead ends: 184 [2022-03-17 17:35:56,087 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-17 17:35:56,087 INFO L912 BasicCegarLoop]: 34 mSDtfsCounter, 41 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:56,087 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 261 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-17 17:35:56,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-03-17 17:35:56,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 173. [2022-03-17 17:35:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 118 states have internal predecessors, (135), 36 states have call successors, (36), 24 states have call predecessors, (36), 22 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2022-03-17 17:35:56,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 204 transitions. [2022-03-17 17:35:56,092 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 204 transitions. Word has length 73 [2022-03-17 17:35:56,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:56,093 INFO L478 AbstractCegarLoop]: Abstraction has 173 states and 204 transitions. [2022-03-17 17:35:56,093 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 8 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2022-03-17 17:35:56,093 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 204 transitions. [2022-03-17 17:35:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-03-17 17:35:56,093 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:56,093 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:56,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-17 17:35:56,307 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-17 17:35:56,308 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:56,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:56,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1139963303, now seen corresponding path program 1 times [2022-03-17 17:35:56,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:56,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522009062] [2022-03-17 17:35:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:56,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:56,313 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:56,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293222826] [2022-03-17 17:35:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:56,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:56,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:56,315 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:56,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-17 17:35:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:56,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-17 17:35:56,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-03-17 17:35:56,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-17 17:35:56,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:56,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522009062] [2022-03-17 17:35:56,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:56,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293222826] [2022-03-17 17:35:56,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293222826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-17 17:35:56,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-17 17:35:56,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-17 17:35:56,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582794818] [2022-03-17 17:35:56,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-17 17:35:56,544 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-17 17:35:56,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-17 17:35:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-17 17:35:56,545 INFO L87 Difference]: Start difference. First operand 173 states and 204 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-17 17:35:56,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:56,580 INFO L93 Difference]: Finished difference Result 172 states and 204 transitions. [2022-03-17 17:35:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-17 17:35:56,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 82 [2022-03-17 17:35:56,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:56,582 INFO L225 Difference]: With dead ends: 172 [2022-03-17 17:35:56,582 INFO L226 Difference]: Without dead ends: 172 [2022-03-17 17:35:56,582 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-17 17:35:56,582 INFO L912 BasicCegarLoop]: 54 mSDtfsCounter, 27 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:56,582 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 89 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:35:56,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-03-17 17:35:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 167. [2022-03-17 17:35:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 113 states have internal predecessors, (130), 34 states have call successors, (34), 22 states have call predecessors, (34), 21 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-17 17:35:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 196 transitions. [2022-03-17 17:35:56,587 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 196 transitions. Word has length 82 [2022-03-17 17:35:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:56,587 INFO L478 AbstractCegarLoop]: Abstraction has 167 states and 196 transitions. [2022-03-17 17:35:56,587 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-17 17:35:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 196 transitions. [2022-03-17 17:35:56,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-17 17:35:56,588 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:56,588 INFO L500 BasicCegarLoop]: trace histogram [14, 13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:56,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-17 17:35:56,803 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-17 17:35:56,803 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:56,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:56,804 INFO L85 PathProgramCache]: Analyzing trace with hash -468178091, now seen corresponding path program 2 times [2022-03-17 17:35:56,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:56,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517752512] [2022-03-17 17:35:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:56,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:56,809 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:56,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923055453] [2022-03-17 17:35:56,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 17:35:56,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:56,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:56,811 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:56,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-17 17:35:56,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 17:35:56,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 17:35:56,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-17 17:35:56,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 72 proven. 260 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-03-17 17:35:57,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:35:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 26 proven. 44 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-17 17:35:57,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:35:57,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517752512] [2022-03-17 17:35:57,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:35:57,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923055453] [2022-03-17 17:35:57,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923055453] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 17:35:57,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 17:35:57,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-03-17 17:35:57,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967966249] [2022-03-17 17:35:57,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 17:35:57,140 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-17 17:35:57,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:35:57,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-17 17:35:57,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-17 17:35:57,141 INFO L87 Difference]: Start difference. First operand 167 states and 196 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 7 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2022-03-17 17:35:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:35:57,212 INFO L93 Difference]: Finished difference Result 169 states and 198 transitions. [2022-03-17 17:35:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-17 17:35:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 7 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) Word has length 91 [2022-03-17 17:35:57,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:35:57,214 INFO L225 Difference]: With dead ends: 169 [2022-03-17 17:35:57,214 INFO L226 Difference]: Without dead ends: 169 [2022-03-17 17:35:57,214 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-03-17 17:35:57,215 INFO L912 BasicCegarLoop]: 47 mSDtfsCounter, 12 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-17 17:35:57,215 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 195 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-17 17:35:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-03-17 17:35:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-03-17 17:35:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 113 states have (on average 1.168141592920354) internal successors, (132), 115 states have internal predecessors, (132), 34 states have call successors, (34), 22 states have call predecessors, (34), 21 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-17 17:35:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 198 transitions. [2022-03-17 17:35:57,219 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 198 transitions. Word has length 91 [2022-03-17 17:35:57,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:35:57,219 INFO L478 AbstractCegarLoop]: Abstraction has 169 states and 198 transitions. [2022-03-17 17:35:57,219 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 7 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2022-03-17 17:35:57,219 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 198 transitions. [2022-03-17 17:35:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-17 17:35:57,220 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:35:57,220 INFO L500 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:35:57,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-17 17:35:57,437 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-17 17:35:57,437 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:35:57,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:35:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2091436208, now seen corresponding path program 1 times [2022-03-17 17:35:57,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:35:57,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294164472] [2022-03-17 17:35:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:57,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:35:57,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:35:57,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441757367] [2022-03-17 17:35:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:35:57,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:35:57,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:35:57,445 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:35:57,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-17 17:35:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-17 17:35:57,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-17 17:35:57,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:35:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-17 17:35:57,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:36:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 26 proven. 28 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-17 17:36:20,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:36:20,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294164472] [2022-03-17 17:36:20,885 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:36:20,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441757367] [2022-03-17 17:36:20,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441757367] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 17:36:20,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 17:36:20,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-03-17 17:36:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314475354] [2022-03-17 17:36:20,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 17:36:20,885 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-17 17:36:20,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:36:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-17 17:36:20,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-03-17 17:36:20,886 INFO L87 Difference]: Start difference. First operand 169 states and 198 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 11 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-03-17 17:36:34,876 WARN L232 SmtUtils]: Spent 12.18s on a formula simplification. DAG size of input: 209 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-17 17:36:37,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 17:36:42,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 17:36:44,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-17 17:36:48,187 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse34 (div c_main_~p~0 2))) (let ((.cse39 (+ .cse34 1))) (let ((.cse4 (= (mod c_main_~p~0 2) 0)) (.cse33 (< c_main_~p~0 0)) (.cse7 (= (mod c_main_~d~0 2) 0)) (.cse36 (div .cse39 2)) (.cse21 (= (mod .cse39 2) 0)) (.cse15 (= (mod .cse34 2) 0)) (.cse37 (div .cse34 2)) (.cse38 (< .cse34 0)) (.cse35 (< c_main_~d~0 0)) (.cse32 (div c_main_~d~0 2))) (let ((.cse1 (+ .cse32 1)) (.cse8 (not .cse35)) (.cse14 (not .cse38)) (.cse16 (+ c_main_~q~0 .cse34 .cse37 1)) (.cse10 (and (not .cse15) .cse38)) (.cse13 (+ c_main_~q~0 .cse34 .cse37)) (.cse19 (not .cse21)) (.cse20 (+ c_main_~q~0 .cse36 .cse34 1)) (.cse22 (+ c_main_~q~0 .cse36 2 .cse34)) (.cse23 (* c_main_~q~0 c_main_~d~0)) (.cse24 (and .cse35 (not .cse7))) (.cse5 (+ c_main_~q~0 .cse34 1)) (.cse6 (not .cse33)) (.cse0 (+ c_main_~q~0 .cse34)) (.cse2 (* (- 1) .cse32)) (.cse3 (and (not .cse4) .cse33))) (and (= c_main_~A~0 (+ (* (- 1) c_main_~d~0) c_main_~r~0 (* c_main_~d~0 (+ c_main_~q~0 c_main_~p~0)))) (or (and (or (= c_main_~A~0 (+ (- 1) (* .cse0 .cse1) c_main_~r~0 .cse2)) .cse3) (or .cse4 (= c_main_~A~0 (+ (- 1) (* .cse5 .cse1) c_main_~r~0 .cse2)) .cse6)) .cse7 .cse8) (or (let ((.cse9 (= (mod .cse1 2) 0)) (.cse18 (div .cse1 2))) (let ((.cse12 (+ .cse18 1)) (.cse11 (* (- 1) .cse18)) (.cse17 (not .cse9))) (and (or .cse3 (and (or .cse9 (and (or .cse10 (= c_main_~A~0 (+ .cse11 (* .cse12 .cse13) (- 2) c_main_~r~0 .cse2))) (or .cse14 .cse15 (= c_main_~A~0 (+ .cse11 (* .cse12 .cse16) (- 2) c_main_~r~0 .cse2))))) (or .cse17 (and (or (= c_main_~A~0 (+ .cse11 (- 1) c_main_~r~0 .cse2 (* .cse13 .cse18))) .cse10) (or .cse14 .cse15 (= c_main_~A~0 (+ .cse11 (- 1) c_main_~r~0 (* .cse16 .cse18) .cse2))))))) (or .cse4 (and (or .cse9 (and (or .cse19 (= c_main_~A~0 (+ .cse11 (- 2) (* .cse20 .cse12) c_main_~r~0 .cse2))) (or .cse21 (= c_main_~A~0 (+ .cse11 (- 2) (* .cse12 .cse22) c_main_~r~0 .cse2))))) (or (and (or (= (+ .cse11 (- 1) (* .cse22 .cse18) c_main_~r~0 .cse2) c_main_~A~0) .cse21) (or .cse19 (= (+ .cse11 (- 1) (* .cse20 .cse18) c_main_~r~0 .cse2) c_main_~A~0))) .cse17)) .cse6)))) .cse7 .cse8) (= (+ .cse23 c_main_~r~0) c_main_~A~0) (or .cse24 (let ((.cse30 (div .cse32 2)) (.cse31 (< .cse32 0)) (.cse26 (= 0 (mod .cse32 2)))) (let ((.cse29 (and .cse31 (not .cse26))) (.cse25 (not .cse31)) (.cse27 (+ .cse30 1)) (.cse28 (* (- 1) .cse30))) (and (or (and (or .cse25 .cse26 (and (or .cse10 (= c_main_~A~0 (+ (- 1) (* .cse27 .cse13) c_main_~r~0 .cse2 .cse28))) (or .cse14 .cse15 (= c_main_~A~0 (+ (- 1) c_main_~r~0 .cse2 (* .cse16 .cse27) .cse28))))) (or .cse29 (and (or .cse14 .cse15 (= c_main_~A~0 (+ c_main_~r~0 .cse2 .cse28 (* .cse30 .cse16)))) (or .cse10 (= (+ (* .cse30 .cse13) c_main_~r~0 .cse2 .cse28) c_main_~A~0))))) .cse3) (or (and (or (and (or .cse19 (= c_main_~A~0 (+ c_main_~r~0 .cse2 (* .cse30 .cse20) .cse28))) (or (= c_main_~A~0 (+ c_main_~r~0 .cse2 .cse28 (* .cse30 .cse22))) .cse21)) .cse29) (or .cse25 .cse26 (and (or .cse19 (= c_main_~A~0 (+ (- 1) c_main_~r~0 (* .cse20 .cse27) .cse2 .cse28))) (or (= (+ (- 1) (* .cse27 .cse22) c_main_~r~0 .cse2 .cse28) c_main_~A~0) .cse21)))) .cse4 .cse6))))) (= (+ .cse23 c_main_~r~0 (* 3 (* c_main_~d~0 c_main_~p~0))) (+ c_main_~A~0 (* 3 c_main_~d~0))) (or .cse24 (and (or (= (+ c_main_~r~0 .cse2 (* .cse5 .cse32)) c_main_~A~0) .cse4 .cse6) (or (= c_main_~A~0 (+ c_main_~r~0 (* .cse0 .cse32) .cse2)) .cse3)))))))) is different from false [2022-03-17 17:36:48,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:36:48,770 INFO L93 Difference]: Finished difference Result 232 states and 293 transitions. [2022-03-17 17:36:48,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-17 17:36:48,771 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 11 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 94 [2022-03-17 17:36:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:36:48,772 INFO L225 Difference]: With dead ends: 232 [2022-03-17 17:36:48,772 INFO L226 Difference]: Without dead ends: 232 [2022-03-17 17:36:48,772 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 171 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=74, Invalid=309, Unknown=1, NotChecked=36, Total=420 [2022-03-17 17:36:48,773 INFO L912 BasicCegarLoop]: 94 mSDtfsCounter, 74 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 94 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-03-17 17:36:48,773 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 825 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 506 Invalid, 2 Unknown, 12 Unchecked, 11.6s Time] [2022-03-17 17:36:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-03-17 17:36:48,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 198. [2022-03-17 17:36:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 135 states have internal predecessors, (158), 44 states have call successors, (44), 23 states have call predecessors, (44), 22 states have return successors, (42), 39 states have call predecessors, (42), 42 states have call successors, (42) [2022-03-17 17:36:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 244 transitions. [2022-03-17 17:36:48,788 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 244 transitions. Word has length 94 [2022-03-17 17:36:48,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:36:48,789 INFO L478 AbstractCegarLoop]: Abstraction has 198 states and 244 transitions. [2022-03-17 17:36:48,789 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 11 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-03-17 17:36:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 244 transitions. [2022-03-17 17:36:48,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-17 17:36:48,790 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:36:48,790 INFO L500 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:36:48,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-17 17:36:49,007 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-17 17:36:49,007 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:36:49,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:36:49,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2090333941, now seen corresponding path program 2 times [2022-03-17 17:36:49,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:36:49,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920634814] [2022-03-17 17:36:49,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:36:49,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:36:49,013 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:36:49,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868436893] [2022-03-17 17:36:49,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 17:36:49,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:36:49,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:36:49,017 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:36:49,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-17 17:36:49,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 17:36:49,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-17 17:36:49,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-17 17:36:49,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-17 17:36:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-03-17 17:36:49,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-17 17:36:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-03-17 17:36:49,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-17 17:36:49,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920634814] [2022-03-17 17:36:49,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-17 17:36:49,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868436893] [2022-03-17 17:36:49,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868436893] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-17 17:36:49,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-17 17:36:49,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2022-03-17 17:36:49,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151807182] [2022-03-17 17:36:49,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-17 17:36:49,364 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-17 17:36:49,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-17 17:36:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-17 17:36:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-03-17 17:36:49,364 INFO L87 Difference]: Start difference. First operand 198 states and 244 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 8 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2022-03-17 17:36:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-17 17:36:49,438 INFO L93 Difference]: Finished difference Result 165 states and 177 transitions. [2022-03-17 17:36:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-17 17:36:49,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 8 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) Word has length 94 [2022-03-17 17:36:49,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-17 17:36:49,439 INFO L225 Difference]: With dead ends: 165 [2022-03-17 17:36:49,439 INFO L226 Difference]: Without dead ends: 165 [2022-03-17 17:36:49,439 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-03-17 17:36:49,439 INFO L912 BasicCegarLoop]: 86 mSDtfsCounter, 46 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-17 17:36:49,440 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 213 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-17 17:36:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-03-17 17:36:49,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 152. [2022-03-17 17:36:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 102 states have (on average 1.0784313725490196) internal successors, (110), 105 states have internal predecessors, (110), 27 states have call successors, (27), 23 states have call predecessors, (27), 22 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-03-17 17:36:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 162 transitions. [2022-03-17 17:36:49,443 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 162 transitions. Word has length 94 [2022-03-17 17:36:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-17 17:36:49,443 INFO L478 AbstractCegarLoop]: Abstraction has 152 states and 162 transitions. [2022-03-17 17:36:49,444 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 8 states have call successors, (29), 8 states have call predecessors, (29), 7 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2022-03-17 17:36:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 162 transitions. [2022-03-17 17:36:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-03-17 17:36:49,445 INFO L492 BasicCegarLoop]: Found error trace [2022-03-17 17:36:49,445 INFO L500 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:36:49,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-17 17:36:49,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-17 17:36:49,659 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-17 17:36:49,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-17 17:36:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash -952273693, now seen corresponding path program 2 times [2022-03-17 17:36:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-17 17:36:49,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465848100] [2022-03-17 17:36:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-17 17:36:49,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-17 17:36:49,665 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-17 17:36:49,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179019122] [2022-03-17 17:36:49,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-17 17:36:49,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-17 17:36:49,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-17 17:36:49,670 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-17 17:36:49,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-17 17:36:49,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-17 17:36:49,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-03-17 17:36:49,716 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-17 17:36:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-17 17:36:49,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-17 17:36:49,760 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-17 17:36:49,761 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-17 17:36:49,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-17 17:36:49,967 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-17 17:36:49,970 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-17 17:36:49,972 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-17 17:36:50,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 05:36:50 BasicIcfg [2022-03-17 17:36:50,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-17 17:36:50,016 INFO L158 Benchmark]: Toolchain (without parser) took 64706.74ms. Allocated memory was 189.8MB in the beginning and 304.1MB in the end (delta: 114.3MB). Free memory was 142.5MB in the beginning and 140.4MB in the end (delta: 2.1MB). Peak memory consumption was 117.0MB. Max. memory is 8.0GB. [2022-03-17 17:36:50,016 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory was 158.9MB in the beginning and 158.8MB in the end (delta: 70.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-17 17:36:50,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.14ms. Allocated memory is still 189.8MB. Free memory was 142.3MB in the beginning and 167.2MB in the end (delta: -24.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-17 17:36:50,017 INFO L158 Benchmark]: Boogie Preprocessor took 21.71ms. Allocated memory is still 189.8MB. Free memory was 167.2MB in the beginning and 165.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 17:36:50,017 INFO L158 Benchmark]: RCFGBuilder took 263.17ms. Allocated memory is still 189.8MB. Free memory was 165.7MB in the beginning and 155.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-17 17:36:50,017 INFO L158 Benchmark]: IcfgTransformer took 32.91ms. Allocated memory is still 189.8MB. Free memory was 155.2MB in the beginning and 154.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-17 17:36:50,017 INFO L158 Benchmark]: TraceAbstraction took 64149.56ms. Allocated memory was 189.8MB in the beginning and 304.1MB in the end (delta: 114.3MB). Free memory was 153.6MB in the beginning and 140.4MB in the end (delta: 13.2MB). Peak memory consumption was 128.9MB. Max. memory is 8.0GB. [2022-03-17 17:36:50,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 189.8MB. Free memory was 158.9MB in the beginning and 158.8MB in the end (delta: 70.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.14ms. Allocated memory is still 189.8MB. Free memory was 142.3MB in the beginning and 167.2MB in the end (delta: -24.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.71ms. Allocated memory is still 189.8MB. Free memory was 167.2MB in the beginning and 165.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 263.17ms. Allocated memory is still 189.8MB. Free memory was 165.7MB in the beginning and 155.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 32.91ms. Allocated memory is still 189.8MB. Free memory was 155.2MB in the beginning and 154.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 64149.56ms. Allocated memory was 189.8MB in the beginning and 304.1MB in the end (delta: 114.3MB). Free memory was 153.6MB in the beginning and 140.4MB in the end (delta: 13.2MB). Peak memory consumption was 128.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [\old(counter)=11, counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [\old(counter)=0, A=7, B=1, counter=0, d=1, p=1, q=0, r=7] [L34] EXPR counter++ VAL [\old(counter)=0, A=7, B=1, counter=1, counter++=0, d=1, p=1, q=0, r=7] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L35] RET __VERIFIER_assert(q == 0) VAL [\old(counter)=0, A=7, B=1, counter=1, d=1, p=1, q=0, r=7] [L36] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L36] RET __VERIFIER_assert(r == A) VAL [\old(counter)=0, A=7, B=1, counter=1, d=1, p=1, q=0, r=7] [L37] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(d == B * p) VAL [\old(counter)=0, A=7, B=1, counter=1, d=1, p=1, q=0, r=7] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [\old(counter)=0, A=7, B=1, counter=1, d=2, p=2, q=0, r=7] [L34] EXPR counter++ VAL [\old(counter)=0, A=7, B=1, counter=2, counter++=1, d=2, p=2, q=0, r=7] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L35] RET __VERIFIER_assert(q == 0) VAL [\old(counter)=0, A=7, B=1, counter=2, d=2, p=2, q=0, r=7] [L36] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L36] RET __VERIFIER_assert(r == A) VAL [\old(counter)=0, A=7, B=1, counter=2, d=2, p=2, q=0, r=7] [L37] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(d == B * p) VAL [\old(counter)=0, A=7, B=1, counter=2, d=2, p=2, q=0, r=7] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [\old(counter)=0, A=7, B=1, counter=2, d=4, p=4, q=0, r=7] [L34] EXPR counter++ VAL [\old(counter)=0, A=7, B=1, counter=3, counter++=2, d=4, p=4, q=0, r=7] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L35] RET __VERIFIER_assert(q == 0) VAL [\old(counter)=0, A=7, B=1, counter=3, d=4, p=4, q=0, r=7] [L36] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L36] RET __VERIFIER_assert(r == A) VAL [\old(counter)=0, A=7, B=1, counter=3, d=4, p=4, q=0, r=7] [L37] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(d == B * p) VAL [\old(counter)=0, A=7, B=1, counter=3, d=4, p=4, q=0, r=7] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [\old(counter)=0, A=7, B=1, counter=3, d=8, p=8, q=0, r=7] [L34] EXPR counter++ VAL [\old(counter)=0, A=7, B=1, counter=4, counter++=3, d=8, p=8, q=0, r=7] [L34] COND TRUE counter++<5 [L35] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L35] RET __VERIFIER_assert(q == 0) VAL [\old(counter)=0, A=7, B=1, counter=4, d=8, p=8, q=0, r=7] [L36] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L36] RET __VERIFIER_assert(r == A) VAL [\old(counter)=0, A=7, B=1, counter=4, d=8, p=8, q=0, r=7] [L37] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(d == B * p) VAL [\old(counter)=0, A=7, B=1, counter=4, d=8, p=8, q=0, r=7] [L38] COND TRUE !(r >= d) VAL [\old(counter)=0, A=7, B=1, counter=4, d=8, p=8, q=0, r=7] [L44] EXPR counter++ VAL [\old(counter)=0, A=7, B=1, counter=5, counter++=4, d=8, p=8, q=0, r=7] [L44] COND TRUE counter++<5 [L45] CALL __VERIFIER_assert(A == q*B + r) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L45] RET __VERIFIER_assert(A == q*B + r) VAL [\old(counter)=0, A=7, B=1, counter=5, d=8, p=8, q=0, r=7] [L46] CALL __VERIFIER_assert(d == B*p) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L46] RET __VERIFIER_assert(d == B*p) VAL [\old(counter)=0, A=7, B=1, counter=5, d=8, p=8, q=0, r=7] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [\old(counter)=0, A=7, B=1, counter=5, d=4, p=4, q=0, r=7] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [\old(counter)=0, A=7, B=1, counter=5, d=4, p=4, q=4, r=3] [L44] EXPR counter++ VAL [\old(counter)=0, A=7, B=1, counter=6, counter++=5, d=4, p=4, q=4, r=3] [L44] COND FALSE !(counter++<5) [L58] CALL __VERIFIER_assert(A == d*q + r) VAL [\old(cond)=0, \old(counter)=0, counter=6] [L15] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] [L17] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.1s, OverallIterations: 17, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 33.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 495 SdHoareTripleChecker+Valid, 12.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 435 mSDsluCounter, 2962 SdHoareTripleChecker+Invalid, 12.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 12 IncrementalHoareTripleChecker+Unchecked, 2219 mSDsCounter, 363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1706 IncrementalHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 363 mSolverCounterUnsat, 743 mSDtfsCounter, 1706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1302 GetRequests, 1163 SyntacticMatches, 13 SemanticMatches, 126 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 25.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=11, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 111 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 27.1s InterpolantComputationTime, 861 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1283 ConstructedInterpolants, 0 QuantifiedInterpolants, 17980 SizeOfPredicates, 33 NumberOfNonLiveVariables, 2039 ConjunctsInSsa, 183 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 3212/3666 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-17 17:36:50,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...