/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-24 00:14:52,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-24 00:14:52,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-24 00:14:52,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-24 00:14:52,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-24 00:14:52,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-24 00:14:52,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-24 00:14:52,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-24 00:14:52,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-24 00:14:52,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-24 00:14:52,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-24 00:14:52,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-24 00:14:52,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-24 00:14:52,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-24 00:14:52,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-24 00:14:52,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-24 00:14:52,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-24 00:14:52,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-24 00:14:52,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-24 00:14:52,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-24 00:14:52,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-24 00:14:52,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-24 00:14:52,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-24 00:14:52,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-24 00:14:52,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-24 00:14:52,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-24 00:14:52,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-24 00:14:52,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-24 00:14:52,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-24 00:14:52,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-24 00:14:52,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-24 00:14:52,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-24 00:14:52,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-24 00:14:52,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-24 00:14:52,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-24 00:14:52,857 INFO L138 SettingsManager]: * Use SBE=true [2022-02-24 00:14:52,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-24 00:14:52,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-24 00:14:52,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-24 00:14:52,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-24 00:14:52,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-24 00:14:52,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-24 00:14:52,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-24 00:14:52,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-24 00:14:52,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-24 00:14:52,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-24 00:14:52,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-24 00:14:52,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-24 00:14:52,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 00:14:52,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-24 00:14:52,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-24 00:14:52,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-24 00:14:52,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-24 00:14:52,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-24 00:14:52,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-24 00:14:52,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-24 00:14:52,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-24 00:14:52,860 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-24 00:14:52,860 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-24 00:14:53,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-24 00:14:53,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-24 00:14:53,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-24 00:14:53,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-24 00:14:53,070 INFO L275 PluginConnector]: CDTParser initialized [2022-02-24 00:14:53,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound2.c [2022-02-24 00:14:53,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d0ec52e/d5a31ecf169648e3ad89d1f48af58b80/FLAG9b2c42ae4 [2022-02-24 00:14:53,481 INFO L306 CDTParser]: Found 1 translation units. [2022-02-24 00:14:53,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound2.c [2022-02-24 00:14:53,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d0ec52e/d5a31ecf169648e3ad89d1f48af58b80/FLAG9b2c42ae4 [2022-02-24 00:14:53,502 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6d0ec52e/d5a31ecf169648e3ad89d1f48af58b80 [2022-02-24 00:14:53,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-24 00:14:53,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-24 00:14:53,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-24 00:14:53,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-24 00:14:53,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-24 00:14:53,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b55aef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53, skipping insertion in model container [2022-02-24 00:14:53,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-24 00:14:53,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-24 00:14:53,696 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/ps5-ll_valuebound2.c[458,471] [2022-02-24 00:14:53,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 00:14:53,732 INFO L203 MainTranslator]: Completed pre-run [2022-02-24 00:14:53,745 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/ps5-ll_valuebound2.c[458,471] [2022-02-24 00:14:53,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-24 00:14:53,766 INFO L208 MainTranslator]: Completed translation [2022-02-24 00:14:53,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53 WrapperNode [2022-02-24 00:14:53,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-24 00:14:53,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-24 00:14:53,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-24 00:14:53,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-24 00:14:53,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-24 00:14:53,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-24 00:14:53,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-24 00:14:53,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-24 00:14:53,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53" (1/1) ... [2022-02-24 00:14:53,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-24 00:14:53,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 00:14:53,809 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) [2022-02-24 00:14:53,838 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 [2022-02-24 00:14:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-24 00:14:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-24 00:14:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-24 00:14:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-24 00:14:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-24 00:14:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-24 00:14:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-24 00:14:53,850 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-24 00:14:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-24 00:14:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-24 00:14:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-02-24 00:14:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-24 00:14:53,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-24 00:14:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-24 00:14:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-24 00:14:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-24 00:14:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-24 00:14:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-24 00:14:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-24 00:14:53,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-24 00:14:53,900 INFO L234 CfgBuilder]: Building ICFG [2022-02-24 00:14:53,902 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-24 00:14:54,018 INFO L275 CfgBuilder]: Performing block encoding [2022-02-24 00:14:54,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-24 00:14:54,022 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-24 00:14:54,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:14:54 BoogieIcfgContainer [2022-02-24 00:14:54,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-24 00:14:54,031 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-24 00:14:54,031 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-24 00:14:54,032 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-24 00:14:54,035 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:14:54" (1/1) ... [2022-02-24 00:14:54,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 24.02 12:14:54 BasicIcfg [2022-02-24 00:14:54,057 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-24 00:14:54,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-24 00:14:54,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-24 00:14:54,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-24 00:14:54,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:14:53" (1/4) ... [2022-02-24 00:14:54,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aab5062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:14:54, skipping insertion in model container [2022-02-24 00:14:54,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:14:53" (2/4) ... [2022-02-24 00:14:54,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aab5062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:14:54, skipping insertion in model container [2022-02-24 00:14:54,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:14:54" (3/4) ... [2022-02-24 00:14:54,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aab5062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:14:54, skipping insertion in model container [2022-02-24 00:14:54,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 24.02 12:14:54" (4/4) ... [2022-02-24 00:14:54,062 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound2.cqvasr [2022-02-24 00:14:54,066 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-24 00:14:54,066 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-24 00:14:54,112 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-24 00:14:54,121 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-24 00:14:54,121 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-24 00:14:54,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-24 00:14:54,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-24 00:14:54,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:14:54,145 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:14:54,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:14:54,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:14:54,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1187991702, now seen corresponding path program 1 times [2022-02-24 00:14:54,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:14:54,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830455736] [2022-02-24 00:14:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:14:54,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:14:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:14:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-24 00:14:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:14:54,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-24 00:14:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:14:54,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-02-24 00:14:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:14:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-24 00:14:54,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:14:54,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830455736] [2022-02-24 00:14:54,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830455736] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:14:54,348 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:14:54,349 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-24 00:14:54,350 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5228973] [2022-02-24 00:14:54,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:14:54,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-24 00:14:54,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:14:54,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-24 00:14:54,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 00:14:54,377 INFO L87 Difference]: Start difference. First operand has 29 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-24 00:14:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:14:54,441 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2022-02-24 00:14:54,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-24 00:14:54,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-02-24 00:14:54,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:14:54,448 INFO L225 Difference]: With dead ends: 51 [2022-02-24 00:14:54,449 INFO L226 Difference]: Without dead ends: 24 [2022-02-24 00:14:54,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-24 00:14:54,454 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:14:54,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 00:14:54,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-02-24 00:14:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-02-24 00:14:54,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-24 00:14:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-02-24 00:14:54,485 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-02-24 00:14:54,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:14:54,486 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-02-24 00:14:54,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-02-24 00:14:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-02-24 00:14:54,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-02-24 00:14:54,488 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:14:54,488 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:14:54,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-24 00:14:54,490 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:14:54,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:14:54,491 INFO L85 PathProgramCache]: Analyzing trace with hash 793962506, now seen corresponding path program 1 times [2022-02-24 00:14:54,491 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:14:54,491 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345059493] [2022-02-24 00:14:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:14:54,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:14:54,516 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-24 00:14:54,516 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502403265] [2022-02-24 00:14:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:14:54,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-24 00:14:54,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 00:14:54,520 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) [2022-02-24 00:14:54,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-24 00:14:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:14:54,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-24 00:14:54,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-24 00:14:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-24 00:14:54,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-24 00:14:54,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:14:54,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345059493] [2022-02-24 00:14:54,721 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-24 00:14:54,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502403265] [2022-02-24 00:14:54,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502403265] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-24 00:14:54,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-24 00:14:54,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-24 00:14:54,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567036692] [2022-02-24 00:14:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:14:54,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 00:14:54,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:14:54,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 00:14:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-24 00:14:54,731 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:14:54,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:14:54,782 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-02-24 00:14:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 00:14:54,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-02-24 00:14:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:14:54,783 INFO L225 Difference]: With dead ends: 35 [2022-02-24 00:14:54,783 INFO L226 Difference]: Without dead ends: 31 [2022-02-24 00:14:54,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-24 00:14:54,785 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:14:54,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 91 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 00:14:54,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-02-24 00:14:54,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-02-24 00:14:54,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-24 00:14:54,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-02-24 00:14:54,798 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 22 [2022-02-24 00:14:54,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:14:54,798 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-02-24 00:14:54,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-02-24 00:14:54,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-02-24 00:14:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-02-24 00:14:54,800 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:14:54,800 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:14:54,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-24 00:14:55,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-24 00:14:55,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:14:55,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:14:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash -503871754, now seen corresponding path program 1 times [2022-02-24 00:14:55,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:14:55,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578307161] [2022-02-24 00:14:55,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:14:55,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:14:55,027 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-24 00:14:55,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [908885406] [2022-02-24 00:14:55,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:14:55,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-24 00:14:55,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 00:14:55,028 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) [2022-02-24 00:14:55,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-24 00:14:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:14:55,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-24 00:14:55,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-24 00:14:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-24 00:14:55,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-24 00:14:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-02-24 00:14:55,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:14:55,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578307161] [2022-02-24 00:14:55,293 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-24 00:14:55,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908885406] [2022-02-24 00:14:55,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908885406] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-24 00:14:55,293 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-24 00:14:55,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-02-24 00:14:55,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353117504] [2022-02-24 00:14:55,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-24 00:14:55,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-24 00:14:55,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:14:55,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-24 00:14:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-24 00:14:55,295 INFO L87 Difference]: Start difference. First operand 31 states and 34 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 00:14:55,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:14:55,373 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-02-24 00:14:55,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-24 00:14:55,373 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-02-24 00:14:55,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:14:55,374 INFO L225 Difference]: With dead ends: 37 [2022-02-24 00:14:55,374 INFO L226 Difference]: Without dead ends: 33 [2022-02-24 00:14:55,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-24 00:14:55,375 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-24 00:14:55,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 81 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-24 00:14:55,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-02-24 00:14:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-02-24 00:14:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-24 00:14:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-02-24 00:14:55,381 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 29 [2022-02-24 00:14:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:14:55,381 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-02-24 00:14:55,381 INFO L471 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-02-24 00:14:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-02-24 00:14:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-02-24 00:14:55,382 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:14:55,382 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:14:55,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-24 00:14:55,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-02-24 00:14:55,595 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:14:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:14:55,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1285656823, now seen corresponding path program 1 times [2022-02-24 00:14:55,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:14:55,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719372833] [2022-02-24 00:14:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:14:55,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:14:55,618 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-24 00:14:55,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862592259] [2022-02-24 00:14:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:14:55,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-24 00:14:55,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 00:14:55,632 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) [2022-02-24 00:14:55,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-24 00:14:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-24 00:14:55,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-24 00:14:55,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-24 00:14:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-24 00:14:55,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-24 00:14:55,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:14:55,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719372833] [2022-02-24 00:14:55,960 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-24 00:14:55,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862592259] [2022-02-24 00:14:55,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862592259] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-24 00:14:55,960 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-24 00:14:55,960 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-02-24 00:14:55,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892947917] [2022-02-24 00:14:55,961 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-24 00:14:55,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-24 00:14:55,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:14:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-24 00:14:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-02-24 00:14:55,961 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-24 00:14:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:14:56,012 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-02-24 00:14:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-24 00:14:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 40 [2022-02-24 00:14:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:14:56,013 INFO L225 Difference]: With dead ends: 42 [2022-02-24 00:14:56,013 INFO L226 Difference]: Without dead ends: 36 [2022-02-24 00:14:56,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-02-24 00:14:56,014 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:14:56,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 155 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 00:14:56,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-02-24 00:14:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-02-24 00:14:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-02-24 00:14:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2022-02-24 00:14:56,019 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 40 [2022-02-24 00:14:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:14:56,020 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2022-02-24 00:14:56,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-02-24 00:14:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2022-02-24 00:14:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-24 00:14:56,021 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:14:56,021 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:14:56,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-24 00:14:56,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-24 00:14:56,238 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:14:56,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:14:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash -542323485, now seen corresponding path program 2 times [2022-02-24 00:14:56,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:14:56,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990635898] [2022-02-24 00:14:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:14:56,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:14:56,249 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-24 00:14:56,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498194829] [2022-02-24 00:14:56,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-24 00:14:56,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-24 00:14:56,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 00:14:56,268 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) [2022-02-24 00:14:56,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-24 00:14:56,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-24 00:14:56,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-24 00:14:56,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2022-02-24 00:14:56,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-24 00:14:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-02-24 00:14:56,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-24 00:14:56,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:14:56,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990635898] [2022-02-24 00:14:56,675 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-24 00:14:56,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498194829] [2022-02-24 00:14:56,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498194829] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-24 00:14:56,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-02-24 00:14:56,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-02-24 00:14:56,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96756964] [2022-02-24 00:14:56,676 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-02-24 00:14:56,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-24 00:14:56,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:14:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-24 00:14:56,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-02-24 00:14:56,677 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-24 00:14:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:14:56,736 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2022-02-24 00:14:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-24 00:14:56,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 47 [2022-02-24 00:14:56,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:14:56,737 INFO L225 Difference]: With dead ends: 45 [2022-02-24 00:14:56,737 INFO L226 Difference]: Without dead ends: 39 [2022-02-24 00:14:56,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:14:56,738 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 2 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:14:56,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 195 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 00:14:56,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-02-24 00:14:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-02-24 00:14:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-02-24 00:14:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-02-24 00:14:56,744 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 47 [2022-02-24 00:14:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:14:56,744 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-02-24 00:14:56,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-02-24 00:14:56,745 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-02-24 00:14:56,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-02-24 00:14:56,745 INFO L506 BasicCegarLoop]: Found error trace [2022-02-24 00:14:56,746 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-24 00:14:56,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-24 00:14:56,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-24 00:14:56,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-24 00:14:56,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-24 00:14:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2094100617, now seen corresponding path program 3 times [2022-02-24 00:14:56,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-24 00:14:56,951 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583094184] [2022-02-24 00:14:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-24 00:14:56,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-24 00:14:56,960 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-24 00:14:56,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110106332] [2022-02-24 00:14:56,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-24 00:14:56,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-24 00:14:56,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-24 00:14:56,961 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) [2022-02-24 00:14:56,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-24 00:14:57,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-24 00:14:57,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-24 00:14:57,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-24 00:14:57,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-24 00:14:57,188 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-02-24 00:14:57,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-24 00:14:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 28 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-02-24 00:14:57,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-24 00:14:57,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583094184] [2022-02-24 00:14:57,304 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-24 00:14:57,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110106332] [2022-02-24 00:14:57,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110106332] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-24 00:14:57,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-02-24 00:14:57,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-02-24 00:14:57,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143897078] [2022-02-24 00:14:57,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-02-24 00:14:57,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-24 00:14:57,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-24 00:14:57,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-24 00:14:57,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-24 00:14:57,305 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-02-24 00:14:57,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-24 00:14:57,342 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2022-02-24 00:14:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-24 00:14:57,343 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) Word has length 54 [2022-02-24 00:14:57,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-24 00:14:57,343 INFO L225 Difference]: With dead ends: 45 [2022-02-24 00:14:57,343 INFO L226 Difference]: Without dead ends: 0 [2022-02-24 00:14:57,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-02-24 00:14:57,344 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-24 00:14:57,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 142 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-24 00:14:57,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-24 00:14:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-24 00:14:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-24 00:14:57,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-24 00:14:57,345 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2022-02-24 00:14:57,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-24 00:14:57,345 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-24 00:14:57,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 11 states have internal predecessors, (35), 10 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2022-02-24 00:14:57,345 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-24 00:14:57,345 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-24 00:14:57,347 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-24 00:14:57,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-24 00:14:57,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-24 00:14:57,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-24 00:14:57,778 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-24 00:14:57,778 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-02-24 00:14:57,778 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-02-24 00:14:57,778 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-24 00:14:57,779 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-24 00:14:57,779 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-02-24 00:14:57,779 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-02-24 00:14:57,779 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2022-02-24 00:14:57,779 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-02-24 00:14:57,779 INFO L858 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-02-24 00:14:57,779 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-02-24 00:14:57,779 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 17 42) the Hoare annotation is: true [2022-02-24 00:14:57,779 INFO L861 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2022-02-24 00:14:57,779 INFO L854 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 0 main_~k~0) (<= main_~k~0 2)) [2022-02-24 00:14:57,779 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-02-24 00:14:57,779 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 2)) (.cse1 (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))))) (or (and (= main_~y~0 2) (< 1 main_~k~0) .cse0 (<= main_~c~0 2) .cse1 (<= 2 main_~c~0)) (and (= main_~y~0 1) .cse0 .cse1 (< 0 main_~k~0) (= main_~c~0 1)) (and (<= 0 main_~k~0) .cse0 .cse1 (= main_~c~0 0) (= main_~y~0 0)))) [2022-02-24 00:14:57,779 INFO L854 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (let ((.cse0 (+ (- 1) main_~y~0)) (.cse1 (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))))) (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (< 1 main_~k~0) (= .cse0 1) (<= main_~k~0 2) (<= main_~c~0 2) .cse1) (and (= .cse0 0) (<= main_~k~0 1) .cse1 (< 0 main_~k~0) (<= main_~c~0 1)))) [2022-02-24 00:14:57,779 INFO L854 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 2)) (.cse1 (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))))) (or (and (= main_~y~0 2) (< 1 main_~k~0) .cse0 (<= main_~c~0 2) .cse1 (<= 2 main_~c~0)) (and (= main_~y~0 1) .cse0 .cse1 (< 0 main_~k~0) (= main_~c~0 1)) (and (<= 0 main_~k~0) .cse0 .cse1 (= main_~c~0 0) (= main_~y~0 0)))) [2022-02-24 00:14:57,780 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (+ (- 1) main_~y~0)) (.cse1 (= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10))))) (or (and (= main_~x~0 0) (= main_~y~0 0)) (and (< 1 main_~k~0) (= .cse0 1) (<= main_~k~0 2) (<= main_~c~0 2) .cse1) (and (= .cse0 0) (<= main_~k~0 1) .cse1 (< 0 main_~k~0) (<= main_~c~0 1)))) [2022-02-24 00:14:57,780 INFO L858 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2022-02-24 00:14:57,780 INFO L858 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2022-02-24 00:14:57,780 INFO L858 garLoopResultBuilder]: For program point mainFINAL(lines 17 42) no Hoare annotation was computed. [2022-02-24 00:14:57,780 INFO L858 garLoopResultBuilder]: For program point mainEXIT(lines 17 42) no Hoare annotation was computed. [2022-02-24 00:14:57,780 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-02-24 00:14:57,780 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-02-24 00:14:57,780 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-02-24 00:14:57,780 INFO L858 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-02-24 00:14:57,780 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-02-24 00:14:57,780 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-02-24 00:14:57,782 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2022-02-24 00:14:57,783 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-24 00:14:57,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:14:57 BasicIcfg [2022-02-24 00:14:57,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-24 00:14:57,802 INFO L158 Benchmark]: Toolchain (without parser) took 4297.09ms. Allocated memory was 169.9MB in the beginning and 254.8MB in the end (delta: 84.9MB). Free memory was 119.1MB in the beginning and 185.3MB in the end (delta: -66.2MB). Peak memory consumption was 19.3MB. Max. memory is 8.0GB. [2022-02-24 00:14:57,802 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory is still 135.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-24 00:14:57,802 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.65ms. Allocated memory was 169.9MB in the beginning and 254.8MB in the end (delta: 84.9MB). Free memory was 118.9MB in the beginning and 231.5MB in the end (delta: -112.7MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-02-24 00:14:57,802 INFO L158 Benchmark]: Boogie Preprocessor took 18.18ms. Allocated memory is still 254.8MB. Free memory was 231.5MB in the beginning and 230.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-24 00:14:57,802 INFO L158 Benchmark]: RCFGBuilder took 244.18ms. Allocated memory is still 254.8MB. Free memory was 230.0MB in the beginning and 220.2MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-24 00:14:57,802 INFO L158 Benchmark]: IcfgTransformer took 25.51ms. Allocated memory is still 254.8MB. Free memory was 220.2MB in the beginning and 218.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-24 00:14:57,803 INFO L158 Benchmark]: TraceAbstraction took 3743.32ms. Allocated memory is still 254.8MB. Free memory was 218.5MB in the beginning and 185.3MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-02-24 00:14:57,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 169.9MB. Free memory is still 135.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.65ms. Allocated memory was 169.9MB in the beginning and 254.8MB in the end (delta: 84.9MB). Free memory was 118.9MB in the beginning and 231.5MB in the end (delta: -112.7MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.18ms. Allocated memory is still 254.8MB. Free memory was 231.5MB in the beginning and 230.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 244.18ms. Allocated memory is still 254.8MB. Free memory was 230.0MB in the beginning and 220.2MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 25.51ms. Allocated memory is still 254.8MB. Free memory was 220.2MB in the beginning and 218.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 3743.32ms. Allocated memory is still 254.8MB. Free memory was 218.5MB in the beginning and 185.3MB in the end (delta: 33.2MB). Peak memory consumption was 33.6MB. 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 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 694 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 535 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 195 IncrementalHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 159 mSDtfsCounter, 195 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 323 GetRequests, 275 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=5, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 41 NumberOfFragments, 462 HoareAnnotationTreeSize, 28 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 289 ConstructedInterpolants, 0 QuantifiedInterpolants, 825 SizeOfPredicates, 7 NumberOfNonLiveVariables, 561 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 218/238 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((((((y == 2 && 1 < k) && k <= 2) && c <= 2) && y + 30 * x == y * y * y * y * 15 + 6 * (y * y * y * y * y) + y * y * y * 10) && 2 <= c) || ((((y == 1 && k <= 2) && y + 30 * x == y * y * y * y * 15 + 6 * (y * y * y * y * y) + y * y * y * 10) && 0 < k) && c == 1)) || ((((0 <= k && k <= 2) && y + 30 * x == y * y * y * y * 15 + 6 * (y * y * y * y * y) + y * y * y * 10) && c == 0) && y == 0) RESULT: Ultimate proved your program to be correct! [2022-02-24 00:14:57,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...