/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/egcd2-ll_unwindbound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 05:33:35,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 05:33:35,900 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 05:33:35,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 05:33:35,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 05:33:35,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 05:33:35,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 05:33:35,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 05:33:35,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 05:33:35,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 05:33:35,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 05:33:35,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 05:33:35,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 05:33:35,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 05:33:35,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 05:33:35,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 05:33:35,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 05:33:35,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 05:33:35,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 05:33:35,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 05:33:35,984 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 05:33:35,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 05:33:35,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 05:33:35,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 05:33:35,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 05:33:35,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 05:33:36,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 05:33:36,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 05:33:36,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 05:33:36,003 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 05:33:36,015 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 05:33:36,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 05:33:36,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 05:33:36,019 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 05:33:36,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 05:33:36,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 05:33:36,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 05:33:36,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 05:33:36,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 05:33:36,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 05:33:36,020 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 05:33:36,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 05:33:36,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 05:33:36,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 05:33:36,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 05:33:36,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 05:33:36,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 05:33:36,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 05:33:36,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:33:36,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 05:33:36,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 05:33:36,023 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 05:33:36,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 05:33:36,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 05:33:36,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 05:33:36,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 05:33:36,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 05:33:36,331 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 05:33:36,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound20.c [2022-03-20 05:33:36,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03192b90/e3037f40152247a3910091cde686d511/FLAG8d0e163b5 [2022-03-20 05:33:36,881 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 05:33:36,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_unwindbound20.c [2022-03-20 05:33:36,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03192b90/e3037f40152247a3910091cde686d511/FLAG8d0e163b5 [2022-03-20 05:33:37,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b03192b90/e3037f40152247a3910091cde686d511 [2022-03-20 05:33:37,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 05:33:37,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 05:33:37,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 05:33:37,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 05:33:37,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 05:33:37,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b80267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37, skipping insertion in model container [2022-03-20 05:33:37,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 05:33:37,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 05:33:37,542 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/egcd2-ll_unwindbound20.c[490,503] [2022-03-20 05:33:37,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:33:37,594 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 05:33:37,607 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/egcd2-ll_unwindbound20.c[490,503] [2022-03-20 05:33:37,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 05:33:37,639 INFO L208 MainTranslator]: Completed translation [2022-03-20 05:33:37,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37 WrapperNode [2022-03-20 05:33:37,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 05:33:37,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 05:33:37,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 05:33:37,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 05:33:37,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 05:33:37,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 05:33:37,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 05:33:37,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 05:33:37,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37" (1/1) ... [2022-03-20 05:33:37,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 05:33:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:37,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 05:33:37,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 05:33:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 05:33:37,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 05:33:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 05:33:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 05:33:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 05:33:37,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 05:33:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 05:33:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 05:33:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 05:33:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 05:33:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 05:33:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 05:33:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 05:33:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 05:33:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 05:33:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 05:33:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 05:33:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 05:33:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 05:33:37,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 05:33:37,856 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 05:33:37,858 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 05:33:38,086 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 05:33:38,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 05:33:38,092 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 05:33:38,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:33:38 BoogieIcfgContainer [2022-03-20 05:33:38,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 05:33:38,099 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 05:33:38,099 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 05:33:38,101 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 05:33:38,104 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:33:38" (1/1) ... [2022-03-20 05:33:38,106 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 05:33:38,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:33:38 BasicIcfg [2022-03-20 05:33:38,139 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 05:33:38,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 05:33:38,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 05:33:38,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 05:33:38,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:33:37" (1/4) ... [2022-03-20 05:33:38,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c30fcc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:33:38, skipping insertion in model container [2022-03-20 05:33:38,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:33:37" (2/4) ... [2022-03-20 05:33:38,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c30fcc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:33:38, skipping insertion in model container [2022-03-20 05:33:38,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:33:38" (3/4) ... [2022-03-20 05:33:38,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c30fcc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:33:38, skipping insertion in model container [2022-03-20 05:33:38,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 05:33:38" (4/4) ... [2022-03-20 05:33:38,152 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound20.cJordan [2022-03-20 05:33:38,158 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 05:33:38,158 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 05:33:38,206 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 05:33:38,214 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 [2022-03-20 05:33:38,214 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 05:33:38,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-20 05:33:38,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-20 05:33:38,239 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:38,240 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:38,240 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash -282167495, now seen corresponding path program 1 times [2022-03-20 05:33:38,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:38,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874559724] [2022-03-20 05:33:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:38,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:38,358 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:38,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686441595] [2022-03-20 05:33:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:38,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:38,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:38,365 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:33:38,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 05:33:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:38,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjunts are in the unsatisfiable core [2022-03-20 05:33:38,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 05:33:38,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:33:38,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:38,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874559724] [2022-03-20 05:33:38,557 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:38,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686441595] [2022-03-20 05:33:38,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686441595] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:33:38,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:33:38,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-20 05:33:38,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604350936] [2022-03-20 05:33:38,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:33:38,566 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-20 05:33:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:38,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-20 05:33:38,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-20 05:33:38,592 INFO L87 Difference]: Start difference. First operand has 39 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 05:33:38,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:38,609 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-03-20 05:33:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-20 05:33:38,611 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 32 [2022-03-20 05:33:38,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:38,620 INFO L225 Difference]: With dead ends: 39 [2022-03-20 05:33:38,620 INFO L226 Difference]: Without dead ends: 34 [2022-03-20 05:33:38,632 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-20 05:33:38,635 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:38,651 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:33:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-20 05:33:38,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-03-20 05:33:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 05:33:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2022-03-20 05:33:38,710 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 32 [2022-03-20 05:33:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:38,711 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2022-03-20 05:33:38,712 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 05:33:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2022-03-20 05:33:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 05:33:38,713 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:38,713 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:38,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:38,914 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-03-20 05:33:38,915 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash -127828113, now seen corresponding path program 1 times [2022-03-20 05:33:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:38,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312378981] [2022-03-20 05:33:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:38,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:38,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:38,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708618584] [2022-03-20 05:33:38,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:38,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:38,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:38,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:33:38,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 05:33:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:39,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 05:33:39,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 05:33:39,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:33:39,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:39,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312378981] [2022-03-20 05:33:39,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:39,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708618584] [2022-03-20 05:33:39,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708618584] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:33:39,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:33:39,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 05:33:39,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315408096] [2022-03-20 05:33:39,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:33:39,231 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 05:33:39,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:39,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 05:33:39,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 05:33:39,233 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 05:33:39,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:39,250 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2022-03-20 05:33:39,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 05:33:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-20 05:33:39,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:39,252 INFO L225 Difference]: With dead ends: 36 [2022-03-20 05:33:39,252 INFO L226 Difference]: Without dead ends: 36 [2022-03-20 05:33:39,253 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 05:33:39,254 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:39,254 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:33:39,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-20 05:33:39,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-03-20 05:33:39,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 05:33:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-03-20 05:33:39,262 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 33 [2022-03-20 05:33:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:39,262 INFO L478 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-03-20 05:33:39,262 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 05:33:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-03-20 05:33:39,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-20 05:33:39,263 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:39,264 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:39,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:39,483 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,SelfDestructingSolverStorable1 [2022-03-20 05:33:39,483 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:39,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:39,484 INFO L85 PathProgramCache]: Analyzing trace with hash 365419517, now seen corresponding path program 1 times [2022-03-20 05:33:39,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:39,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376117049] [2022-03-20 05:33:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:39,498 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:39,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022289092] [2022-03-20 05:33:39,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:39,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:39,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:39,501 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) [2022-03-20 05:33:39,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 05:33:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:39,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 05:33:39,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 05:33:39,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 05:33:39,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:39,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376117049] [2022-03-20 05:33:39,816 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:39,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022289092] [2022-03-20 05:33:39,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022289092] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:33:39,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:33:39,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-03-20 05:33:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910004209] [2022-03-20 05:33:39,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:39,817 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 05:33:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 05:33:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 05:33:39,818 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 05:33:39,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:39,895 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2022-03-20 05:33:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 05:33:39,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-03-20 05:33:39,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:39,897 INFO L225 Difference]: With dead ends: 45 [2022-03-20 05:33:39,897 INFO L226 Difference]: Without dead ends: 45 [2022-03-20 05:33:39,897 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-20 05:33:39,898 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:39,899 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 127 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:33:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-03-20 05:33:39,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2022-03-20 05:33:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 05:33:39,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-03-20 05:33:39,907 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 34 [2022-03-20 05:33:39,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:39,907 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-03-20 05:33:39,908 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 05:33:39,908 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-03-20 05:33:39,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 05:33:39,909 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:39,909 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:39,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:40,131 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:40,132 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:40,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash 196514290, now seen corresponding path program 1 times [2022-03-20 05:33:40,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:40,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281014243] [2022-03-20 05:33:40,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:40,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:40,154 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:40,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525524391] [2022-03-20 05:33:40,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:40,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:40,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:40,156 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) [2022-03-20 05:33:40,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 05:33:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:40,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 05:33:40,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 05:33:40,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 05:33:40,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:40,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281014243] [2022-03-20 05:33:40,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525524391] [2022-03-20 05:33:40,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525524391] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 05:33:40,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 05:33:40,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-20 05:33:40,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739437628] [2022-03-20 05:33:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:33:40,461 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:33:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:33:40,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-03-20 05:33:40,462 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 05:33:40,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:40,498 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-03-20 05:33:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:33:40,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 36 [2022-03-20 05:33:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:40,499 INFO L225 Difference]: With dead ends: 41 [2022-03-20 05:33:40,499 INFO L226 Difference]: Without dead ends: 41 [2022-03-20 05:33:40,499 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-20 05:33:40,500 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:40,501 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 140 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:33:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-20 05:33:40,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-20 05:33:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 05:33:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-03-20 05:33:40,507 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2022-03-20 05:33:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:40,507 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-03-20 05:33:40,508 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 05:33:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-03-20 05:33:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 05:33:40,509 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:40,509 INFO L499 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1] [2022-03-20 05:33:40,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:40,715 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:40,716 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:40,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:40,716 INFO L85 PathProgramCache]: Analyzing trace with hash 56558454, now seen corresponding path program 1 times [2022-03-20 05:33:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:40,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268220660] [2022-03-20 05:33:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:40,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:40,729 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:40,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168150460] [2022-03-20 05:33:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:40,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:40,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:40,731 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) [2022-03-20 05:33:40,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 05:33:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:40,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 05:33:40,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 05:33:40,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:33:40,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:40,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268220660] [2022-03-20 05:33:40,882 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:40,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168150460] [2022-03-20 05:33:40,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168150460] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:33:40,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:33:40,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 05:33:40,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746944023] [2022-03-20 05:33:40,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:33:40,883 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:33:40,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:33:40,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:33:40,884 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 05:33:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:40,914 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-03-20 05:33:40,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:33:40,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-03-20 05:33:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:40,923 INFO L225 Difference]: With dead ends: 43 [2022-03-20 05:33:40,923 INFO L226 Difference]: Without dead ends: 43 [2022-03-20 05:33:40,923 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:33:40,924 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:40,925 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 133 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:33:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-03-20 05:33:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-03-20 05:33:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 05:33:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-03-20 05:33:40,930 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 39 [2022-03-20 05:33:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:40,931 INFO L478 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-03-20 05:33:40,931 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 05:33:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-03-20 05:33:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-20 05:33:40,932 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:40,932 INFO L499 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1] [2022-03-20 05:33:40,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:41,143 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:41,144 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:41,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:41,144 INFO L85 PathProgramCache]: Analyzing trace with hash 578094295, now seen corresponding path program 1 times [2022-03-20 05:33:41,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:41,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707840661] [2022-03-20 05:33:41,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:41,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:41,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:41,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395434374] [2022-03-20 05:33:41,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:41,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:41,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:41,159 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) [2022-03-20 05:33:41,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 05:33:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:41,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 05:33:41,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 05:33:41,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 05:33:41,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:41,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707840661] [2022-03-20 05:33:41,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:41,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395434374] [2022-03-20 05:33:41,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395434374] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 05:33:41,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 05:33:41,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-03-20 05:33:41,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137212297] [2022-03-20 05:33:41,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:33:41,523 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:33:41,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:33:41,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 05:33:41,525 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 05:33:41,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:41,564 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2022-03-20 05:33:41,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:33:41,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2022-03-20 05:33:41,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:41,566 INFO L225 Difference]: With dead ends: 55 [2022-03-20 05:33:41,567 INFO L226 Difference]: Without dead ends: 55 [2022-03-20 05:33:41,567 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 05:33:41,570 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:41,570 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 169 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:33:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-20 05:33:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2022-03-20 05:33:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 16 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-20 05:33:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2022-03-20 05:33:41,578 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 41 [2022-03-20 05:33:41,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:41,579 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2022-03-20 05:33:41,579 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 05:33:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2022-03-20 05:33:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-20 05:33:41,580 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:41,580 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:41,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:41,791 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:41,792 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:41,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1581112078, now seen corresponding path program 1 times [2022-03-20 05:33:41,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:41,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174456609] [2022-03-20 05:33:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:41,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:41,805 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:41,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591130961] [2022-03-20 05:33:41,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:41,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:41,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:41,807 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) [2022-03-20 05:33:41,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 05:33:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:41,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 05:33:41,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-20 05:33:42,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-20 05:33:42,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:42,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174456609] [2022-03-20 05:33:42,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:42,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591130961] [2022-03-20 05:33:42,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591130961] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 05:33:42,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 05:33:42,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-03-20 05:33:42,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005385667] [2022-03-20 05:33:42,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:33:42,241 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:33:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:33:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 05:33:42,242 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 05:33:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:42,296 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2022-03-20 05:33:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 05:33:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2022-03-20 05:33:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:42,297 INFO L225 Difference]: With dead ends: 59 [2022-03-20 05:33:42,298 INFO L226 Difference]: Without dead ends: 59 [2022-03-20 05:33:42,298 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 05:33:42,299 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:42,299 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:33:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-20 05:33:42,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-03-20 05:33:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.2) internal successors, (42), 36 states have internal predecessors, (42), 16 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-20 05:33:42,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-03-20 05:33:42,306 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 46 [2022-03-20 05:33:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:42,306 INFO L478 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-03-20 05:33:42,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 05:33:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-03-20 05:33:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-20 05:33:42,307 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:42,307 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:42,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:42,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:42,524 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:42,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1942645143, now seen corresponding path program 1 times [2022-03-20 05:33:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:42,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777197011] [2022-03-20 05:33:42,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:42,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:42,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770644391] [2022-03-20 05:33:42,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:42,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:42,537 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) [2022-03-20 05:33:42,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 05:33:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:42,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-20 05:33:42,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-03-20 05:33:42,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:43,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:43,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777197011] [2022-03-20 05:33:43,028 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:43,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770644391] [2022-03-20 05:33:43,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770644391] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 05:33:43,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 05:33:43,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-03-20 05:33:43,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445827586] [2022-03-20 05:33:43,029 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:43,030 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 05:33:43,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:43,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 05:33:43,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-03-20 05:33:43,031 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 05:33:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:43,202 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2022-03-20 05:33:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 05:33:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-03-20 05:33:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:43,204 INFO L225 Difference]: With dead ends: 63 [2022-03-20 05:33:43,204 INFO L226 Difference]: Without dead ends: 63 [2022-03-20 05:33:43,204 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-03-20 05:33:43,205 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:43,205 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 190 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:33:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-20 05:33:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2022-03-20 05:33:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 39 states have internal predecessors, (45), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-20 05:33:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2022-03-20 05:33:43,211 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 51 [2022-03-20 05:33:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:43,212 INFO L478 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2022-03-20 05:33:43,212 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 05:33:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2022-03-20 05:33:43,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-03-20 05:33:43,213 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:43,213 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:43,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:43,427 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,SelfDestructingSolverStorable7 [2022-03-20 05:33:43,428 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:43,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:43,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1573186588, now seen corresponding path program 1 times [2022-03-20 05:33:43,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:43,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091926586] [2022-03-20 05:33:43,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:43,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:43,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:43,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463777851] [2022-03-20 05:33:43,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:43,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:43,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:43,441 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) [2022-03-20 05:33:43,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-20 05:33:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:43,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 05:33:43,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-20 05:33:43,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-20 05:33:43,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:43,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091926586] [2022-03-20 05:33:43,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:43,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463777851] [2022-03-20 05:33:43,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463777851] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:33:43,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:33:43,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-03-20 05:33:43,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137521136] [2022-03-20 05:33:43,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:43,755 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 05:33:43,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 05:33:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-20 05:33:43,755 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-03-20 05:33:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:43,919 INFO L93 Difference]: Finished difference Result 207 states and 242 transitions. [2022-03-20 05:33:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 05:33:43,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 60 [2022-03-20 05:33:43,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:43,925 INFO L225 Difference]: With dead ends: 207 [2022-03-20 05:33:43,925 INFO L226 Difference]: Without dead ends: 207 [2022-03-20 05:33:43,925 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-03-20 05:33:43,927 INFO L913 BasicCegarLoop]: 61 mSDtfsCounter, 119 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:43,928 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 264 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:33:43,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-03-20 05:33:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2022-03-20 05:33:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 126 states have (on average 1.1904761904761905) internal successors, (150), 130 states have internal predecessors, (150), 46 states have call successors, (46), 27 states have call predecessors, (46), 26 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-03-20 05:33:43,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 237 transitions. [2022-03-20 05:33:43,962 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 237 transitions. Word has length 60 [2022-03-20 05:33:43,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:43,962 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 237 transitions. [2022-03-20 05:33:43,963 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-03-20 05:33:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 237 transitions. [2022-03-20 05:33:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-03-20 05:33:43,964 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:43,964 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:43,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:44,164 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:44,165 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:44,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:44,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1491020248, now seen corresponding path program 1 times [2022-03-20 05:33:44,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:44,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774592530] [2022-03-20 05:33:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:44,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:44,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:44,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083271778] [2022-03-20 05:33:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:44,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:44,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:44,179 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) [2022-03-20 05:33:44,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-20 05:33:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:44,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 05:33:44,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-03-20 05:33:44,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-03-20 05:33:44,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:44,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774592530] [2022-03-20 05:33:44,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:44,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083271778] [2022-03-20 05:33:44,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083271778] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:33:44,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:33:44,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-20 05:33:44,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329523221] [2022-03-20 05:33:44,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:44,512 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 05:33:44,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:44,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 05:33:44,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 05:33:44,513 INFO L87 Difference]: Start difference. First operand 199 states and 237 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-20 05:33:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:44,711 INFO L93 Difference]: Finished difference Result 263 states and 342 transitions. [2022-03-20 05:33:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 05:33:44,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2022-03-20 05:33:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:44,713 INFO L225 Difference]: With dead ends: 263 [2022-03-20 05:33:44,713 INFO L226 Difference]: Without dead ends: 263 [2022-03-20 05:33:44,714 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-03-20 05:33:44,714 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 62 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:44,715 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 387 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:33:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-03-20 05:33:44,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 239. [2022-03-20 05:33:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 153 states have (on average 1.2222222222222223) internal successors, (187), 156 states have internal predecessors, (187), 60 states have call successors, (60), 26 states have call predecessors, (60), 25 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-20 05:33:44,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 303 transitions. [2022-03-20 05:33:44,728 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 303 transitions. Word has length 61 [2022-03-20 05:33:44,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:44,728 INFO L478 AbstractCegarLoop]: Abstraction has 239 states and 303 transitions. [2022-03-20 05:33:44,728 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-20 05:33:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 303 transitions. [2022-03-20 05:33:44,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-03-20 05:33:44,729 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:44,730 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:44,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:44,944 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,SelfDestructingSolverStorable9 [2022-03-20 05:33:44,944 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:44,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:44,945 INFO L85 PathProgramCache]: Analyzing trace with hash 317217743, now seen corresponding path program 1 times [2022-03-20 05:33:44,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:44,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985345436] [2022-03-20 05:33:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:44,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:44,955 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:44,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068241298] [2022-03-20 05:33:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:44,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:44,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:44,959 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) [2022-03-20 05:33:44,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-20 05:33:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:45,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 05:33:45,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:45,174 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-20 05:33:45,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-20 05:33:45,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:45,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985345436] [2022-03-20 05:33:45,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:45,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068241298] [2022-03-20 05:33:45,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068241298] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:33:45,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:33:45,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-03-20 05:33:45,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182940420] [2022-03-20 05:33:45,321 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:45,321 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 05:33:45,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:45,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 05:33:45,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-20 05:33:45,322 INFO L87 Difference]: Start difference. First operand 239 states and 303 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-03-20 05:33:45,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:45,480 INFO L93 Difference]: Finished difference Result 252 states and 308 transitions. [2022-03-20 05:33:45,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 05:33:45,481 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 63 [2022-03-20 05:33:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:45,482 INFO L225 Difference]: With dead ends: 252 [2022-03-20 05:33:45,483 INFO L226 Difference]: Without dead ends: 252 [2022-03-20 05:33:45,483 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-03-20 05:33:45,484 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 83 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:45,484 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 266 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 05:33:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-03-20 05:33:45,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 248. [2022-03-20 05:33:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 162 states have (on average 1.1728395061728396) internal successors, (190), 165 states have internal predecessors, (190), 60 states have call successors, (60), 26 states have call predecessors, (60), 25 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-03-20 05:33:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 306 transitions. [2022-03-20 05:33:45,494 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 306 transitions. Word has length 63 [2022-03-20 05:33:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:45,495 INFO L478 AbstractCegarLoop]: Abstraction has 248 states and 306 transitions. [2022-03-20 05:33:45,495 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 6 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2022-03-20 05:33:45,495 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 306 transitions. [2022-03-20 05:33:45,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-03-20 05:33:45,496 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:45,496 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:45,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:45,711 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,SelfDestructingSolverStorable10 [2022-03-20 05:33:45,711 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash 918639692, now seen corresponding path program 1 times [2022-03-20 05:33:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:45,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277844435] [2022-03-20 05:33:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:45,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:45,722 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:45,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468363895] [2022-03-20 05:33:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:45,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:45,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:45,724 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) [2022-03-20 05:33:45,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-20 05:33:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:45,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-20 05:33:45,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-20 05:33:46,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-20 05:33:46,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:46,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277844435] [2022-03-20 05:33:46,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:46,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468363895] [2022-03-20 05:33:46,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468363895] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:33:46,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:33:46,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-03-20 05:33:46,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453541530] [2022-03-20 05:33:46,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:46,240 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 05:33:46,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:46,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 05:33:46,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-03-20 05:33:46,241 INFO L87 Difference]: Start difference. First operand 248 states and 306 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-03-20 05:33:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:46,599 INFO L93 Difference]: Finished difference Result 332 states and 429 transitions. [2022-03-20 05:33:46,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 05:33:46,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 68 [2022-03-20 05:33:46,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:46,603 INFO L225 Difference]: With dead ends: 332 [2022-03-20 05:33:46,603 INFO L226 Difference]: Without dead ends: 328 [2022-03-20 05:33:46,603 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-03-20 05:33:46,604 INFO L913 BasicCegarLoop]: 54 mSDtfsCounter, 44 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:46,604 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 395 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 05:33:46,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-20 05:33:46,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 295. [2022-03-20 05:33:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 195 states have (on average 1.1948717948717948) internal successors, (233), 204 states have internal predecessors, (233), 71 states have call successors, (71), 29 states have call predecessors, (71), 28 states have return successors, (66), 61 states have call predecessors, (66), 66 states have call successors, (66) [2022-03-20 05:33:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2022-03-20 05:33:46,616 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 68 [2022-03-20 05:33:46,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:46,617 INFO L478 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2022-03-20 05:33:46,617 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 6 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-03-20 05:33:46,617 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2022-03-20 05:33:46,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-03-20 05:33:46,618 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:46,618 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:46,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:46,831 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,SelfDestructingSolverStorable11 [2022-03-20 05:33:46,832 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:46,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash -210356579, now seen corresponding path program 2 times [2022-03-20 05:33:46,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:46,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798718521] [2022-03-20 05:33:46,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:46,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:46,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:46,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800003372] [2022-03-20 05:33:46,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 05:33:46,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:46,846 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) [2022-03-20 05:33:46,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-20 05:33:46,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 05:33:46,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 05:33:46,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-20 05:33:46,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-20 05:33:47,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-03-20 05:33:47,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:47,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798718521] [2022-03-20 05:33:47,856 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:47,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800003372] [2022-03-20 05:33:47,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800003372] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:33:47,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:33:47,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-03-20 05:33:47,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603590036] [2022-03-20 05:33:47,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:47,857 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-20 05:33:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:47,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-20 05:33:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-03-20 05:33:47,858 INFO L87 Difference]: Start difference. First operand 295 states and 370 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2022-03-20 05:33:49,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:49,062 INFO L93 Difference]: Finished difference Result 317 states and 395 transitions. [2022-03-20 05:33:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 05:33:49,063 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) Word has length 73 [2022-03-20 05:33:49,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:49,065 INFO L225 Difference]: With dead ends: 317 [2022-03-20 05:33:49,065 INFO L226 Difference]: Without dead ends: 316 [2022-03-20 05:33:49,065 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-03-20 05:33:49,066 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 51 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:49,066 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 351 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 05:33:49,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-20 05:33:49,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 305. [2022-03-20 05:33:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 204 states have (on average 1.1862745098039216) internal successors, (242), 212 states have internal predecessors, (242), 69 states have call successors, (69), 32 states have call predecessors, (69), 31 states have return successors, (65), 60 states have call predecessors, (65), 65 states have call successors, (65) [2022-03-20 05:33:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 376 transitions. [2022-03-20 05:33:49,077 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 376 transitions. Word has length 73 [2022-03-20 05:33:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:49,078 INFO L478 AbstractCegarLoop]: Abstraction has 305 states and 376 transitions. [2022-03-20 05:33:49,078 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 9 states have call predecessors, (19), 9 states have call successors, (19) [2022-03-20 05:33:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 376 transitions. [2022-03-20 05:33:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-20 05:33:49,079 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:49,079 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:49,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:49,299 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,SelfDestructingSolverStorable12 [2022-03-20 05:33:49,300 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash 952478412, now seen corresponding path program 3 times [2022-03-20 05:33:49,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:49,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064415346] [2022-03-20 05:33:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:49,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:49,308 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:49,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136528673] [2022-03-20 05:33:49,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 05:33:49,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:49,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:49,310 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:33:49,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-20 05:33:49,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-20 05:33:49,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 05:33:49,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-20 05:33:49,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 31 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-03-20 05:33:49,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:50,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064415346] [2022-03-20 05:33:50,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:50,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136528673] [2022-03-20 05:33:50,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136528673] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 05:33:50,050 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 05:33:50,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-03-20 05:33:50,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783286141] [2022-03-20 05:33:50,050 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:50,051 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 05:33:50,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 05:33:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-20 05:33:50,051 INFO L87 Difference]: Start difference. First operand 305 states and 376 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-20 05:33:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:50,341 INFO L93 Difference]: Finished difference Result 335 states and 407 transitions. [2022-03-20 05:33:50,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 05:33:50,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 78 [2022-03-20 05:33:50,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:50,345 INFO L225 Difference]: With dead ends: 335 [2022-03-20 05:33:50,346 INFO L226 Difference]: Without dead ends: 333 [2022-03-20 05:33:50,346 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-03-20 05:33:50,346 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 24 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:50,347 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 249 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 05:33:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-03-20 05:33:50,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 330. [2022-03-20 05:33:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 221 states have (on average 1.1764705882352942) internal successors, (260), 228 states have internal predecessors, (260), 73 states have call successors, (73), 37 states have call predecessors, (73), 35 states have return successors, (69), 64 states have call predecessors, (69), 69 states have call successors, (69) [2022-03-20 05:33:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 402 transitions. [2022-03-20 05:33:50,359 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 402 transitions. Word has length 78 [2022-03-20 05:33:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:50,359 INFO L478 AbstractCegarLoop]: Abstraction has 330 states and 402 transitions. [2022-03-20 05:33:50,359 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-20 05:33:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 402 transitions. [2022-03-20 05:33:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-03-20 05:33:50,360 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:50,360 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:50,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:50,575 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:50,575 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:50,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash 900405455, now seen corresponding path program 1 times [2022-03-20 05:33:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:50,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622622618] [2022-03-20 05:33:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:50,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:50,587 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:50,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293544317] [2022-03-20 05:33:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:50,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:50,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:50,588 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:33:50,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-20 05:33:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:50,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-20 05:33:50,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-03-20 05:33:51,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-03-20 05:33:51,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:51,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622622618] [2022-03-20 05:33:51,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:51,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293544317] [2022-03-20 05:33:51,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293544317] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:33:51,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:33:51,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-03-20 05:33:51,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720501245] [2022-03-20 05:33:51,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:51,809 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-20 05:33:51,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:51,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-20 05:33:51,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-20 05:33:51,810 INFO L87 Difference]: Start difference. First operand 330 states and 402 transitions. Second operand has 19 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-20 05:33:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:54,574 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2022-03-20 05:33:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-20 05:33:54,574 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 84 [2022-03-20 05:33:54,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:54,576 INFO L225 Difference]: With dead ends: 390 [2022-03-20 05:33:54,577 INFO L226 Difference]: Without dead ends: 377 [2022-03-20 05:33:54,577 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2022-03-20 05:33:54,578 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 87 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:54,582 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 521 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-20 05:33:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-03-20 05:33:54,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2022-03-20 05:33:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 247 states have (on average 1.1902834008097165) internal successors, (294), 252 states have internal predecessors, (294), 84 states have call successors, (84), 37 states have call predecessors, (84), 36 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-20 05:33:54,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 460 transitions. [2022-03-20 05:33:54,594 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 460 transitions. Word has length 84 [2022-03-20 05:33:54,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:54,595 INFO L478 AbstractCegarLoop]: Abstraction has 368 states and 460 transitions. [2022-03-20 05:33:54,595 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 18 states have internal predecessors, (45), 11 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2022-03-20 05:33:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 460 transitions. [2022-03-20 05:33:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-03-20 05:33:54,596 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:54,596 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:54,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-03-20 05:33:54,815 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-20 05:33:54,815 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:54,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash 653404933, now seen corresponding path program 1 times [2022-03-20 05:33:54,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:54,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136006843] [2022-03-20 05:33:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:54,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:54,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:54,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123200615] [2022-03-20 05:33:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:54,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:54,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:54,828 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:33:54,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-20 05:33:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:54,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-20 05:33:54,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 51 proven. 23 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-03-20 05:33:55,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:56,200 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 05:33:56,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:56,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136006843] [2022-03-20 05:33:56,884 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:56,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123200615] [2022-03-20 05:33:56,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123200615] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 05:33:56,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-20 05:33:56,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-03-20 05:33:56,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997587975] [2022-03-20 05:33:56,885 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:56,885 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 05:33:56,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:56,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 05:33:56,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-03-20 05:33:56,886 INFO L87 Difference]: Start difference. First operand 368 states and 460 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-03-20 05:33:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:57,415 INFO L93 Difference]: Finished difference Result 375 states and 465 transitions. [2022-03-20 05:33:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 05:33:57,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 101 [2022-03-20 05:33:57,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:57,418 INFO L225 Difference]: With dead ends: 375 [2022-03-20 05:33:57,418 INFO L226 Difference]: Without dead ends: 375 [2022-03-20 05:33:57,419 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-03-20 05:33:57,419 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 33 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:57,420 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 361 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 05:33:57,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-03-20 05:33:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 372. [2022-03-20 05:33:57,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 250 states have (on average 1.184) internal successors, (296), 255 states have internal predecessors, (296), 84 states have call successors, (84), 38 states have call predecessors, (84), 37 states have return successors, (82), 78 states have call predecessors, (82), 82 states have call successors, (82) [2022-03-20 05:33:57,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 462 transitions. [2022-03-20 05:33:57,432 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 462 transitions. Word has length 101 [2022-03-20 05:33:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:57,432 INFO L478 AbstractCegarLoop]: Abstraction has 372 states and 462 transitions. [2022-03-20 05:33:57,432 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-03-20 05:33:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 462 transitions. [2022-03-20 05:33:57,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-03-20 05:33:57,433 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:57,434 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:57,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:57,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-20 05:33:57,659 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash 487608439, now seen corresponding path program 4 times [2022-03-20 05:33:57,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:57,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210416905] [2022-03-20 05:33:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:57,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:57,667 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:57,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266975757] [2022-03-20 05:33:57,668 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 05:33:57,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:57,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:57,669 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:33:57,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-20 05:33:57,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 05:33:57,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 05:33:57,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 05:33:57,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-20 05:33:57,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 05:33:57,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:57,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210416905] [2022-03-20 05:33:57,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:57,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266975757] [2022-03-20 05:33:57,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266975757] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 05:33:57,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 05:33:57,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 05:33:57,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629379630] [2022-03-20 05:33:57,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 05:33:57,868 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 05:33:57,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:57,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 05:33:57,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 05:33:57,869 INFO L87 Difference]: Start difference. First operand 372 states and 462 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-20 05:33:57,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:57,928 INFO L93 Difference]: Finished difference Result 417 states and 535 transitions. [2022-03-20 05:33:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 05:33:57,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 105 [2022-03-20 05:33:57,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:57,930 INFO L225 Difference]: With dead ends: 417 [2022-03-20 05:33:57,931 INFO L226 Difference]: Without dead ends: 417 [2022-03-20 05:33:57,931 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-20 05:33:57,931 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 12 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:57,932 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 194 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 05:33:57,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-03-20 05:33:57,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 387. [2022-03-20 05:33:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 259 states have (on average 1.193050193050193) internal successors, (309), 263 states have internal predecessors, (309), 90 states have call successors, (90), 38 states have call predecessors, (90), 37 states have return successors, (88), 85 states have call predecessors, (88), 88 states have call successors, (88) [2022-03-20 05:33:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 487 transitions. [2022-03-20 05:33:57,947 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 487 transitions. Word has length 105 [2022-03-20 05:33:57,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:57,947 INFO L478 AbstractCegarLoop]: Abstraction has 387 states and 487 transitions. [2022-03-20 05:33:57,947 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-03-20 05:33:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 487 transitions. [2022-03-20 05:33:57,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 05:33:57,950 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:57,950 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1] [2022-03-20 05:33:57,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:58,164 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-20 05:33:58,164 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:58,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash 791718745, now seen corresponding path program 1 times [2022-03-20 05:33:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:58,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161044850] [2022-03-20 05:33:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:58,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:58,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:58,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150059354] [2022-03-20 05:33:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:58,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:58,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:58,176 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:33:58,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-20 05:33:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:33:58,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-20 05:33:58,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:33:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 229 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-03-20 05:33:58,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:33:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-03-20 05:33:58,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:33:58,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161044850] [2022-03-20 05:33:58,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:33:58,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150059354] [2022-03-20 05:33:58,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150059354] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:33:58,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:33:58,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-03-20 05:33:58,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047637067] [2022-03-20 05:33:58,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:33:58,718 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 05:33:58,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:33:58,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 05:33:58,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2022-03-20 05:33:58,719 INFO L87 Difference]: Start difference. First operand 387 states and 487 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 10 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2022-03-20 05:33:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:33:59,178 INFO L93 Difference]: Finished difference Result 1260 states and 1555 transitions. [2022-03-20 05:33:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-20 05:33:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 10 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) Word has length 116 [2022-03-20 05:33:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:33:59,187 INFO L225 Difference]: With dead ends: 1260 [2022-03-20 05:33:59,187 INFO L226 Difference]: Without dead ends: 1260 [2022-03-20 05:33:59,188 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=559, Unknown=0, NotChecked=0, Total=870 [2022-03-20 05:33:59,188 INFO L913 BasicCegarLoop]: 90 mSDtfsCounter, 296 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 05:33:59,188 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 458 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 05:33:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-03-20 05:33:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1202. [2022-03-20 05:33:59,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 771 states have (on average 1.1595330739299612) internal successors, (894), 782 states have internal predecessors, (894), 305 states have call successors, (305), 126 states have call predecessors, (305), 125 states have return successors, (296), 293 states have call predecessors, (296), 296 states have call successors, (296) [2022-03-20 05:33:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1495 transitions. [2022-03-20 05:33:59,227 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1495 transitions. Word has length 116 [2022-03-20 05:33:59,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:33:59,229 INFO L478 AbstractCegarLoop]: Abstraction has 1202 states and 1495 transitions. [2022-03-20 05:33:59,229 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 10 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (34), 8 states have call predecessors, (34), 9 states have call successors, (34) [2022-03-20 05:33:59,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1495 transitions. [2022-03-20 05:33:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-03-20 05:33:59,232 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:33:59,232 INFO L499 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:33:59,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-20 05:33:59,447 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-20 05:33:59,447 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:33:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:33:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash -351372628, now seen corresponding path program 2 times [2022-03-20 05:33:59,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:33:59,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437516821] [2022-03-20 05:33:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:33:59,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:33:59,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:33:59,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084088544] [2022-03-20 05:33:59,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 05:33:59,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:33:59,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:33:59,474 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:33:59,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-20 05:33:59,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 05:33:59,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 05:33:59,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 73 conjunts are in the unsatisfiable core [2022-03-20 05:33:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:34:03,173 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 05:34:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 139 proven. 92 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-03-20 05:34:05,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:34:17,094 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 05:34:28,995 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 05:34:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 136 proven. 86 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-03-20 05:34:33,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:34:33,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437516821] [2022-03-20 05:34:33,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:34:33,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084088544] [2022-03-20 05:34:33,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084088544] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:34:33,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:34:33,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2022-03-20 05:34:33,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798417904] [2022-03-20 05:34:33,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:34:33,996 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-20 05:34:33,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:34:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-20 05:34:33,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=635, Unknown=6, NotChecked=0, Total=812 [2022-03-20 05:34:33,997 INFO L87 Difference]: Start difference. First operand 1202 states and 1495 transitions. Second operand has 29 states, 26 states have (on average 2.230769230769231) internal successors, (58), 20 states have internal predecessors, (58), 17 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 15 states have call predecessors, (38), 16 states have call successors, (38) [2022-03-20 05:34:36,363 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:34:39,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:34:42,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:34:54,062 WARN L232 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 127 DAG size of output: 126 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:35:01,247 WARN L232 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 86 DAG size of output: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:35:04,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:35:06,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:35:08,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:36:07,150 WARN L232 SmtUtils]: Spent 53.20s on a formula simplification. DAG size of input: 109 DAG size of output: 108 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:37:04,772 WARN L232 SmtUtils]: Spent 55.88s on a formula simplification. DAG size of input: 129 DAG size of output: 128 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:37:06,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:08,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:10,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:20,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:22,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:24,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:31,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:33,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:48,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:56,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:37:58,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:38:06,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:38:08,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:38:13,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:38:15,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:39:09,510 WARN L232 SmtUtils]: Spent 51.28s on a formula simplification. DAG size of input: 147 DAG size of output: 145 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:39:13,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:39:16,920 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:39:20,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:39:22,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:39:31,377 WARN L232 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 128 DAG size of output: 127 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:40:47,787 WARN L232 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 110 DAG size of output: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:40:49,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:40:51,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:40:53,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:17,194 WARN L232 SmtUtils]: Spent 21.59s on a formula simplification. DAG size of input: 146 DAG size of output: 127 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:41:19,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:21,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:25,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:27,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:29,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:32,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:34,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:36,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:38,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:40,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:42,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:44,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:46,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:41:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:41:46,715 INFO L93 Difference]: Finished difference Result 1624 states and 2101 transitions. [2022-03-20 05:41:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-20 05:41:46,717 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 2.230769230769231) internal successors, (58), 20 states have internal predecessors, (58), 17 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 15 states have call predecessors, (38), 16 states have call successors, (38) Word has length 124 [2022-03-20 05:41:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:41:46,724 INFO L225 Difference]: With dead ends: 1624 [2022-03-20 05:41:46,725 INFO L226 Difference]: Without dead ends: 1624 [2022-03-20 05:41:46,726 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 218 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 358.5s TimeCoverageRelationStatistics Valid=612, Invalid=2030, Unknown=10, NotChecked=0, Total=2652 [2022-03-20 05:41:46,726 INFO L913 BasicCegarLoop]: 51 mSDtfsCounter, 254 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 344 mSolverCounterUnsat, 37 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 37 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 100.0s IncrementalHoareTripleChecker+Time [2022-03-20 05:41:46,726 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 644 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 850 Invalid, 37 Unknown, 0 Unchecked, 100.0s Time] [2022-03-20 05:41:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2022-03-20 05:41:46,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1545. [2022-03-20 05:41:46,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 972 states have (on average 1.1779835390946503) internal successors, (1145), 988 states have internal predecessors, (1145), 430 states have call successors, (430), 143 states have call predecessors, (430), 142 states have return successors, (421), 413 states have call predecessors, (421), 421 states have call successors, (421) [2022-03-20 05:41:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1996 transitions. [2022-03-20 05:41:46,779 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1996 transitions. Word has length 124 [2022-03-20 05:41:46,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:41:46,779 INFO L478 AbstractCegarLoop]: Abstraction has 1545 states and 1996 transitions. [2022-03-20 05:41:46,780 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 2.230769230769231) internal successors, (58), 20 states have internal predecessors, (58), 17 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (38), 15 states have call predecessors, (38), 16 states have call successors, (38) [2022-03-20 05:41:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1996 transitions. [2022-03-20 05:41:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-20 05:41:46,781 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:41:46,781 INFO L499 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:41:46,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-20 05:41:47,007 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:41:47,008 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:41:47,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:41:47,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1703433466, now seen corresponding path program 3 times [2022-03-20 05:41:47,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:41:47,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912753965] [2022-03-20 05:41:47,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:41:47,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:41:47,024 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:41:47,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644357806] [2022-03-20 05:41:47,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 05:41:47,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:41:47,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:41:47,034 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:41:47,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-20 05:41:47,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-20 05:41:47,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 05:41:47,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-20 05:41:47,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:41:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 100 proven. 57 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-03-20 05:41:48,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:42:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 101 proven. 56 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-03-20 05:42:02,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:42:02,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912753965] [2022-03-20 05:42:02,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:42:02,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644357806] [2022-03-20 05:42:02,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644357806] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:42:02,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:42:02,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 22 [2022-03-20 05:42:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18754729] [2022-03-20 05:42:02,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:42:02,122 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-20 05:42:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:42:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-20 05:42:02,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-03-20 05:42:02,123 INFO L87 Difference]: Start difference. First operand 1545 states and 1996 transitions. Second operand has 22 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2022-03-20 05:42:23,908 WARN L232 SmtUtils]: Spent 19.85s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:42:33,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:42:35,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:42:47,132 WARN L232 SmtUtils]: Spent 11.86s on a formula simplification. DAG size of input: 82 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:42:51,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:04,952 WARN L232 SmtUtils]: Spent 6.85s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 05:43:06,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:09,039 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:11,045 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:13,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:15,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:25,671 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:28,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:34,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:36,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:38,030 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 05:43:38,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:38,676 INFO L93 Difference]: Finished difference Result 1883 states and 2462 transitions. [2022-03-20 05:43:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 05:43:38,677 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) Word has length 128 [2022-03-20 05:43:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:38,685 INFO L225 Difference]: With dead ends: 1883 [2022-03-20 05:43:38,685 INFO L226 Difference]: Without dead ends: 1869 [2022-03-20 05:43:38,686 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 67.0s TimeCoverageRelationStatistics Valid=349, Invalid=976, Unknown=7, NotChecked=0, Total=1332 [2022-03-20 05:43:38,686 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 162 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 199 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.9s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:38,687 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 636 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 695 Invalid, 13 Unknown, 0 Unchecked, 34.9s Time] [2022-03-20 05:43:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-03-20 05:43:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1756. [2022-03-20 05:43:38,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1118 states have (on average 1.1914132379248659) internal successors, (1332), 1130 states have internal predecessors, (1332), 482 states have call successors, (482), 157 states have call predecessors, (482), 155 states have return successors, (479), 468 states have call predecessors, (479), 479 states have call successors, (479) [2022-03-20 05:43:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2293 transitions. [2022-03-20 05:43:38,758 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2293 transitions. Word has length 128 [2022-03-20 05:43:38,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:38,758 INFO L478 AbstractCegarLoop]: Abstraction has 1756 states and 2293 transitions. [2022-03-20 05:43:38,759 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 12 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2022-03-20 05:43:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2293 transitions. [2022-03-20 05:43:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-03-20 05:43:38,760 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:38,760 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:38,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-20 05:43:38,983 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:38,984 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:38,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:38,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1569660177, now seen corresponding path program 1 times [2022-03-20 05:43:38,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:38,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69028862] [2022-03-20 05:43:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:38,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:38,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:38,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657597055] [2022-03-20 05:43:38,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:38,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:38,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:38,995 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:43:38,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-20 05:43:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:39,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-20 05:43:39,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:43:39,320 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 434 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-03-20 05:43:39,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:43:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2022-03-20 05:43:39,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:43:39,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69028862] [2022-03-20 05:43:39,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:43:39,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657597055] [2022-03-20 05:43:39,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657597055] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:43:39,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:43:39,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-03-20 05:43:39,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983679520] [2022-03-20 05:43:39,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:43:39,629 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 05:43:39,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:43:39,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 05:43:39,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2022-03-20 05:43:39,630 INFO L87 Difference]: Start difference. First operand 1756 states and 2293 transitions. Second operand has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 12 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 10 states have call predecessors, (42), 11 states have call successors, (42) [2022-03-20 05:43:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:40,028 INFO L93 Difference]: Finished difference Result 1809 states and 2308 transitions. [2022-03-20 05:43:40,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-20 05:43:40,029 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 12 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 10 states have call predecessors, (42), 11 states have call successors, (42) Word has length 133 [2022-03-20 05:43:40,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:40,035 INFO L225 Difference]: With dead ends: 1809 [2022-03-20 05:43:40,035 INFO L226 Difference]: Without dead ends: 1809 [2022-03-20 05:43:40,035 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2022-03-20 05:43:40,036 INFO L913 BasicCegarLoop]: 88 mSDtfsCounter, 233 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:40,036 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 449 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 05:43:40,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2022-03-20 05:43:40,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1777. [2022-03-20 05:43:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1139 states have (on average 1.160667251975417) internal successors, (1322), 1151 states have internal predecessors, (1322), 482 states have call successors, (482), 157 states have call predecessors, (482), 155 states have return successors, (479), 468 states have call predecessors, (479), 479 states have call successors, (479) [2022-03-20 05:43:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2283 transitions. [2022-03-20 05:43:40,078 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2283 transitions. Word has length 133 [2022-03-20 05:43:40,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:40,078 INFO L478 AbstractCegarLoop]: Abstraction has 1777 states and 2283 transitions. [2022-03-20 05:43:40,078 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.222222222222222) internal successors, (76), 18 states have internal predecessors, (76), 12 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 10 states have call predecessors, (42), 11 states have call successors, (42) [2022-03-20 05:43:40,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2283 transitions. [2022-03-20 05:43:40,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-03-20 05:43:40,080 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:40,080 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:40,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-20 05:43:40,295 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:40,295 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:40,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1381701507, now seen corresponding path program 2 times [2022-03-20 05:43:40,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:40,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937442719] [2022-03-20 05:43:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:40,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:40,307 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:40,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597898536] [2022-03-20 05:43:40,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 05:43:40,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:40,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:40,309 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:43:40,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-20 05:43:40,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 05:43:40,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 05:43:40,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 90 conjunts are in the unsatisfiable core [2022-03-20 05:43:40,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:43:42,614 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 123 proven. 126 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-03-20 05:43:42,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:43:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-03-20 05:43:44,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:43:44,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937442719] [2022-03-20 05:43:44,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:43:44,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597898536] [2022-03-20 05:43:44,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597898536] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:43:44,134 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:43:44,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 26 [2022-03-20 05:43:44,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063395651] [2022-03-20 05:43:44,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:43:44,134 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-20 05:43:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:43:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-20 05:43:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-03-20 05:43:44,135 INFO L87 Difference]: Start difference. First operand 1777 states and 2283 transitions. Second operand has 26 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-03-20 05:43:50,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:50,147 INFO L93 Difference]: Finished difference Result 1897 states and 2418 transitions. [2022-03-20 05:43:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-20 05:43:50,149 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) Word has length 134 [2022-03-20 05:43:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:50,155 INFO L225 Difference]: With dead ends: 1897 [2022-03-20 05:43:50,155 INFO L226 Difference]: Without dead ends: 1888 [2022-03-20 05:43:50,156 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 243 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2022-03-20 05:43:50,156 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 96 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:50,156 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 714 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-20 05:43:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-03-20 05:43:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1729. [2022-03-20 05:43:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1098 states have (on average 1.138433515482696) internal successors, (1250), 1113 states have internal predecessors, (1250), 461 states have call successors, (461), 170 states have call predecessors, (461), 169 states have return successors, (459), 445 states have call predecessors, (459), 459 states have call successors, (459) [2022-03-20 05:43:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2170 transitions. [2022-03-20 05:43:50,196 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2170 transitions. Word has length 134 [2022-03-20 05:43:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:50,197 INFO L478 AbstractCegarLoop]: Abstraction has 1729 states and 2170 transitions. [2022-03-20 05:43:50,197 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 2.619047619047619) internal successors, (55), 19 states have internal predecessors, (55), 14 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 11 states have call predecessors, (31), 12 states have call successors, (31) [2022-03-20 05:43:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2170 transitions. [2022-03-20 05:43:50,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-03-20 05:43:50,202 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:50,202 INFO L499 BasicCegarLoop]: trace histogram [37, 36, 36, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:50,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-20 05:43:50,415 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:50,415 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -42185316, now seen corresponding path program 2 times [2022-03-20 05:43:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:50,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195912075] [2022-03-20 05:43:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:50,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:50,425 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:50,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503171388] [2022-03-20 05:43:50,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 05:43:50,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:50,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:50,426 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:43:50,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-20 05:43:50,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 05:43:50,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 05:43:50,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-20 05:43:50,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:43:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 72 proven. 2606 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-03-20 05:43:51,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:43:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2918 backedges. 72 proven. 302 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked. [2022-03-20 05:43:51,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:43:51,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195912075] [2022-03-20 05:43:51,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:43:51,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503171388] [2022-03-20 05:43:51,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503171388] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:43:51,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:43:51,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2022-03-20 05:43:51,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787304604] [2022-03-20 05:43:51,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:43:51,512 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-20 05:43:51,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:43:51,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-20 05:43:51,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-03-20 05:43:51,513 INFO L87 Difference]: Start difference. First operand 1729 states and 2170 transitions. Second operand has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) [2022-03-20 05:43:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:52,140 INFO L93 Difference]: Finished difference Result 3217 states and 4148 transitions. [2022-03-20 05:43:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-20 05:43:52,140 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) Word has length 260 [2022-03-20 05:43:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:52,151 INFO L225 Difference]: With dead ends: 3217 [2022-03-20 05:43:52,151 INFO L226 Difference]: Without dead ends: 3215 [2022-03-20 05:43:52,152 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 496 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=629, Invalid=1093, Unknown=0, NotChecked=0, Total=1722 [2022-03-20 05:43:52,152 INFO L913 BasicCegarLoop]: 112 mSDtfsCounter, 439 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:52,152 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 541 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 05:43:52,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3215 states. [2022-03-20 05:43:52,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3215 to 3129. [2022-03-20 05:43:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3129 states, 2007 states have (on average 1.1778774289985052) internal successors, (2364), 2045 states have internal predecessors, (2364), 853 states have call successors, (853), 270 states have call predecessors, (853), 268 states have return successors, (847), 813 states have call predecessors, (847), 847 states have call successors, (847) [2022-03-20 05:43:52,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 4064 transitions. [2022-03-20 05:43:52,237 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 4064 transitions. Word has length 260 [2022-03-20 05:43:52,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:52,238 INFO L478 AbstractCegarLoop]: Abstraction has 3129 states and 4064 transitions. [2022-03-20 05:43:52,238 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.666666666666667) internal successors, (136), 24 states have internal predecessors, (136), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) [2022-03-20 05:43:52,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 4064 transitions. [2022-03-20 05:43:52,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-03-20 05:43:52,244 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:52,244 INFO L499 BasicCegarLoop]: trace histogram [37, 36, 36, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:52,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-20 05:43:52,459 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:52,459 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:52,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2118395671, now seen corresponding path program 1 times [2022-03-20 05:43:52,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:52,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544448162] [2022-03-20 05:43:52,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:52,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:52,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:52,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782468769] [2022-03-20 05:43:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:52,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:52,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:52,472 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:43:52,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-20 05:43:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 05:43:52,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-20 05:43:52,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 05:43:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 91 proven. 2610 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-03-20 05:43:53,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 05:43:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 91 proven. 306 refuted. 0 times theorem prover too weak. 2544 trivial. 0 not checked. [2022-03-20 05:43:53,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 05:43:53,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544448162] [2022-03-20 05:43:53,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 05:43:53,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782468769] [2022-03-20 05:43:53,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782468769] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 05:43:53,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 05:43:53,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 24 [2022-03-20 05:43:53,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275725809] [2022-03-20 05:43:53,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 05:43:53,501 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-20 05:43:53,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 05:43:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-20 05:43:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-03-20 05:43:53,502 INFO L87 Difference]: Start difference. First operand 3129 states and 4064 transitions. Second operand has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) [2022-03-20 05:43:54,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 05:43:54,058 INFO L93 Difference]: Finished difference Result 2791 states and 3478 transitions. [2022-03-20 05:43:54,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-20 05:43:54,059 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) Word has length 263 [2022-03-20 05:43:54,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 05:43:54,069 INFO L225 Difference]: With dead ends: 2791 [2022-03-20 05:43:54,069 INFO L226 Difference]: Without dead ends: 2791 [2022-03-20 05:43:54,070 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 502 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=628, Invalid=1094, Unknown=0, NotChecked=0, Total=1722 [2022-03-20 05:43:54,072 INFO L913 BasicCegarLoop]: 112 mSDtfsCounter, 325 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 05:43:54,073 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 552 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 05:43:54,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-03-20 05:43:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2683. [2022-03-20 05:43:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2683 states, 1668 states have (on average 1.1235011990407673) internal successors, (1874), 1689 states have internal predecessors, (1874), 749 states have call successors, (749), 266 states have call predecessors, (749), 265 states have return successors, (747), 727 states have call predecessors, (747), 747 states have call successors, (747) [2022-03-20 05:43:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2683 states to 2683 states and 3370 transitions. [2022-03-20 05:43:54,163 INFO L78 Accepts]: Start accepts. Automaton has 2683 states and 3370 transitions. Word has length 263 [2022-03-20 05:43:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 05:43:54,163 INFO L478 AbstractCegarLoop]: Abstraction has 2683 states and 3370 transitions. [2022-03-20 05:43:54,164 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.75) internal successors, (138), 24 states have internal predecessors, (138), 18 states have call successors, (84), 12 states have call predecessors, (84), 11 states have return successors, (82), 16 states have call predecessors, (82), 17 states have call successors, (82) [2022-03-20 05:43:54,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2683 states and 3370 transitions. [2022-03-20 05:43:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2022-03-20 05:43:54,173 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 05:43:54,173 INFO L499 BasicCegarLoop]: trace histogram [53, 52, 52, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 8, 7, 7, 7, 7, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:43:54,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-20 05:43:54,391 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:54,391 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 05:43:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 05:43:54,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1140261512, now seen corresponding path program 3 times [2022-03-20 05:43:54,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 05:43:54,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756186409] [2022-03-20 05:43:54,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 05:43:54,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 05:43:54,410 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 05:43:54,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859866218] [2022-03-20 05:43:54,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 05:43:54,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 05:43:54,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 05:43:54,412 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 05:43:54,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-20 05:45:25,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2022-03-20 05:45:25,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-03-20 05:45:25,213 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 05:45:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 05:45:27,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 05:45:27,682 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 05:45:27,683 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 05:45:27,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-20 05:45:27,885 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-20 05:45:27,888 INFO L719 BasicCegarLoop]: Path program histogram: [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 05:45:27,891 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 05:45:27,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:45:27 BasicIcfg [2022-03-20 05:45:27,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 05:45:28,000 INFO L158 Benchmark]: Toolchain (without parser) took 710717.86ms. Allocated memory was 178.3MB in the beginning and 302.0MB in the end (delta: 123.7MB). Free memory was 127.6MB in the beginning and 200.6MB in the end (delta: -73.1MB). Peak memory consumption was 51.2MB. Max. memory is 8.0GB. [2022-03-20 05:45:28,000 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory was 143.9MB in the beginning and 143.8MB in the end (delta: 77.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 05:45:28,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.66ms. Allocated memory was 178.3MB in the beginning and 251.7MB in the end (delta: 73.4MB). Free memory was 127.3MB in the beginning and 226.5MB in the end (delta: -99.2MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. [2022-03-20 05:45:28,000 INFO L158 Benchmark]: Boogie Preprocessor took 44.33ms. Allocated memory is still 251.7MB. Free memory was 226.5MB in the beginning and 224.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 05:45:28,001 INFO L158 Benchmark]: RCFGBuilder took 409.52ms. Allocated memory is still 251.7MB. Free memory was 224.9MB in the beginning and 213.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 05:45:28,001 INFO L158 Benchmark]: IcfgTransformer took 40.36ms. Allocated memory is still 251.7MB. Free memory was 213.3MB in the beginning and 211.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 05:45:28,001 INFO L158 Benchmark]: TraceAbstraction took 709856.96ms. Allocated memory was 251.7MB in the beginning and 302.0MB in the end (delta: 50.3MB). Free memory was 211.6MB in the beginning and 200.6MB in the end (delta: 11.0MB). Peak memory consumption was 61.9MB. Max. memory is 8.0GB. [2022-03-20 05:45:28,002 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 178.3MB. Free memory was 143.9MB in the beginning and 143.8MB in the end (delta: 77.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 357.66ms. Allocated memory was 178.3MB in the beginning and 251.7MB in the end (delta: 73.4MB). Free memory was 127.3MB in the beginning and 226.5MB in the end (delta: -99.2MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.33ms. Allocated memory is still 251.7MB. Free memory was 226.5MB in the beginning and 224.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 409.52ms. Allocated memory is still 251.7MB. Free memory was 224.9MB in the beginning and 213.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 40.36ms. Allocated memory is still 251.7MB. Free memory was 213.3MB in the beginning and 211.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 709856.96ms. Allocated memory was 251.7MB in the beginning and 302.0MB in the end (delta: 50.3MB). Free memory was 211.6MB in the beginning and 200.6MB in the end (delta: 11.0MB). Peak memory consumption was 61.9MB. 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: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [\old(counter)=24, counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s, c, k, xy, yy; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [\old(counter)=0, counter=0, x=34, y=55] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=34, y=55] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 [L33] c = 0 [L34] k = 0 [L35] xy = (long long) x * y [L36] yy = (long long) y * y VAL [\old(counter)=0, a=34, b=55, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L37] CALL assume_abort_if_not(xy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L37] RET assume_abort_if_not(xy < 2147483647) VAL [\old(counter)=0, a=34, b=55, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L38] CALL assume_abort_if_not(yy < 2147483647) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L38] RET assume_abort_if_not(yy < 2147483647) VAL [\old(counter)=0, a=34, b=55, c=0, counter=0, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=34, b=55, c=0, counter=1, counter++=0, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=34, b=55, c=34, counter=1, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, counter++=1, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=34, b=55, c=34, counter=2, k=0, p=1, q=0, r=0, s=1, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=55, b=34, c=34, counter=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=34, counter=3, counter++=2, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=55, b=34, c=55, counter=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, counter++=3, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=55, b=34, c=55, counter=4, k=0, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=55, b=34, c=21, counter=4, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, counter++=4, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=55, b=34, c=21, counter=5, k=1, p=0, q=1, r=1, s=0, temp=0, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=34, b=21, c=21, counter=5, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=21, counter=6, counter++=5, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=34, b=21, c=34, counter=6, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, counter++=6, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=34, b=21, c=34, counter=7, k=0, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=34, b=21, c=13, counter=7, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, counter++=7, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=34, b=21, c=13, counter=8, k=1, p=1, q=-1, r=0, s=1, temp=1, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=21, b=13, c=13, counter=8, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=13, counter=9, counter++=8, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=21, b=13, c=21, counter=9, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, counter++=9, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=21, b=13, c=21, counter=10, k=0, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=21, b=13, c=8, counter=10, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, counter++=10, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=11] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=21, b=13, c=8, counter=11, k=1, p=-1, q=2, r=1, s=-1, temp=0, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=13, b=8, c=8, counter=11, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=8, counter=12, counter++=11, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=13, b=8, c=13, counter=12, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, counter++=12, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=13] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=13, b=8, c=13, counter=13, k=0, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=13, b=8, c=5, counter=13, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, counter++=13, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=14] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=13, b=8, c=5, counter=14, k=1, p=2, q=-3, r=-1, s=2, temp=1, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=8, b=5, c=5, counter=14, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=5, counter=15, counter++=14, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=8, b=5, c=8, counter=15, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, counter++=15, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=16] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=8, b=5, c=8, counter=16, k=0, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=8, b=5, c=3, counter=16, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, counter++=16, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=17] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=8, b=5, c=3, counter=17, k=1, p=-3, q=5, r=2, s=-3, temp=-1, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=5, b=3, c=3, counter=17, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=3, counter=18, counter++=17, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L40] COND TRUE counter++<20 [L41] COND FALSE !(!(b != 0)) [L43] c = a [L44] k = 0 VAL [\old(counter)=0, a=5, b=3, c=5, counter=18, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, counter++=18, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=19] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=5, b=3, c=5, counter=19, k=0, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L51] COND FALSE !(!(c >= b)) [L53] c = c - b [L54] k = k + 1 VAL [\old(counter)=0, a=5, b=3, c=2, counter=19, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L46] EXPR counter++ VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, counter++=19, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L46] COND TRUE counter++<20 [L47] CALL __VERIFIER_assert(a == k * b + c) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L47] RET __VERIFIER_assert(a == k * b + c) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L48] CALL __VERIFIER_assert(a == y*r + x*p) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L48] RET __VERIFIER_assert(a == y*r + x*p) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L49] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L49] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L50] CALL __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(cond)=1, \old(counter)=0, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=20] [L50] RET __VERIFIER_assert(q*xy + s*yy - q*x - b*y - s*y + b == 0) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L51] COND TRUE !(c >= b) VAL [\old(counter)=0, a=5, b=3, c=2, counter=20, k=1, p=5, q=-8, r=-3, s=5, temp=2, x=34, xy=1870, y=55, yy=3025] [L57] a = b [L58] b = c [L60] long long temp; [L61] temp = p [L62] p = q [L63] q = temp - q * k [L64] temp = r [L65] r = s [L66] s = temp - s * k VAL [\old(counter)=0, a=3, b=2, c=2, counter=20, k=1, p=-8, q=13, r=5, s=-8, temp=-3, x=34, xy=1870, y=55, yy=3025] [L40] EXPR counter++ VAL [\old(counter)=0, a=3, b=2, c=2, counter=21, counter++=20, k=1, p=-8, q=13, r=5, s=-8, temp=-3, x=34, xy=1870, y=55, yy=3025] [L40] COND FALSE !(counter++<20) [L70] CALL __VERIFIER_assert(q*x + s*y == 0) VAL [\old(cond)=0, \old(counter)=0, counter=21] [L11] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=21] [L13] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 709.7s, OverallIterations: 25, TraceHistogramMax: 53, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 543.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 50 mSolverCounterUnknown, 2491 SdHoareTripleChecker+Valid, 143.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2411 mSDsluCounter, 8061 SdHoareTripleChecker+Invalid, 142.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6657 mSDsCounter, 2290 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5756 IncrementalHoareTripleChecker+Invalid, 8096 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2290 mSolverCounterUnsat, 1404 mSDtfsCounter, 5756 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4085 GetRequests, 3611 SyntacticMatches, 19 SemanticMatches, 455 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2292 ImplicationChecksByTransitivity, 434.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3129occurred in iteration=23, InterpolantAutomatonStates: 383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 24 MinimizatonAttempts, 771 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 91.7s SatisfiabilityAnalysisTime, 64.3s InterpolantComputationTime, 2523 NumberOfCodeBlocks, 2443 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 3846 ConstructedInterpolants, 0 QuantifiedInterpolants, 24736 SizeOfPredicates, 152 NumberOfNonLiveVariables, 5979 ConjunctsInSsa, 643 ConjunctsInUnsatCore, 41 InterpolantComputations, 7 PerfectInterpolantSequences, 11750/18950 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! [2022-03-20 05:45:28,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...