/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 20:34:16,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 20:34:16,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 20:34:16,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 20:34:16,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 20:34:16,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 20:34:16,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 20:34:16,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 20:34:16,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 20:34:16,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 20:34:16,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 20:34:16,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 20:34:16,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 20:34:16,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 20:34:16,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 20:34:16,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 20:34:16,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 20:34:16,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 20:34:16,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 20:34:16,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 20:34:16,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 20:34:16,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 20:34:16,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 20:34:16,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 20:34:16,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 20:34:16,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 20:34:16,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 20:34:16,572 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 20:34:16,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 20:34:16,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 20:34:16,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 20:34:16,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 20:34:16,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 20:34:16,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 20:34:16,573 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 20:34:16,573 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 20:34:16,573 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 20:34:16,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 20:34:16,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 20:34:16,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 20:34:16,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 20:34:16,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 20:34:16,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:34:16,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 20:34:16,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 20:34:16,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 20:34:16,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 20:34:16,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 20:34:16,575 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 20:34:16,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 20:34:16,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 20:34:16,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 20:34:16,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 20:34:16,577 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 20:34:16,577 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 20:34:16,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 20:34:16,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 20:34:16,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 20:34:16,803 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 20:34:16,806 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 20:34:16,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound1.i [2022-01-10 20:34:16,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf1c82d5/82b80f15983a4582a83f0fa093ed02b0/FLAG77cb0b596 [2022-01-10 20:34:17,217 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 20:34:17,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin2_unwindbound1.i [2022-01-10 20:34:17,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf1c82d5/82b80f15983a4582a83f0fa093ed02b0/FLAG77cb0b596 [2022-01-10 20:34:17,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bf1c82d5/82b80f15983a4582a83f0fa093ed02b0 [2022-01-10 20:34:17,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 20:34:17,624 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 20:34:17,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 20:34:17,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 20:34:17,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 20:34:17,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177320a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17, skipping insertion in model container [2022-01-10 20:34:17,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 20:34:17,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 20:34:17,800 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/divbin2_unwindbound1.i[951,964] [2022-01-10 20:34:17,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:34:17,843 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 20:34:17,852 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/divbin2_unwindbound1.i[951,964] [2022-01-10 20:34:17,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 20:34:17,864 INFO L208 MainTranslator]: Completed translation [2022-01-10 20:34:17,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17 WrapperNode [2022-01-10 20:34:17,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 20:34:17,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 20:34:17,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 20:34:17,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 20:34:17,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,896 INFO L137 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-01-10 20:34:17,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 20:34:17,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 20:34:17,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 20:34:17,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 20:34:17,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 20:34:17,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 20:34:17,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 20:34:17,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 20:34:17,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (1/1) ... [2022-01-10 20:34:17,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 20:34:17,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:17,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 20:34:17,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 20:34:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 20:34:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 20:34:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 20:34:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 20:34:18,061 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 20:34:18,063 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 20:34:18,293 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 20:34:18,298 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 20:34:18,298 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 20:34:18,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:34:18 BoogieIcfgContainer [2022-01-10 20:34:18,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 20:34:18,300 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 20:34:18,300 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 20:34:18,301 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 20:34:18,311 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:34:18" (1/1) ... [2022-01-10 20:34:18,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:34:18 BasicIcfg [2022-01-10 20:34:18,446 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 20:34:18,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 20:34:18,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 20:34:18,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 20:34:18,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:34:17" (1/4) ... [2022-01-10 20:34:18,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efd4260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:34:18, skipping insertion in model container [2022-01-10 20:34:18,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:34:17" (2/4) ... [2022-01-10 20:34:18,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efd4260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:34:18, skipping insertion in model container [2022-01-10 20:34:18,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:34:18" (3/4) ... [2022-01-10 20:34:18,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efd4260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:34:18, skipping insertion in model container [2022-01-10 20:34:18,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:34:18" (4/4) ... [2022-01-10 20:34:18,468 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound1.iTransformedIcfg [2022-01-10 20:34:18,472 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 20:34:18,473 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 20:34:18,556 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 20:34:18,569 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=PETRI_NET, 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 [2022-01-10 20:34:18,569 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 20:34:18,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 20 states have internal predecessors, (29), 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) [2022-01-10 20:34:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-10 20:34:18,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:18,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:18,584 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:34:18,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:18,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1545003950, now seen corresponding path program 1 times [2022-01-10 20:34:18,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:18,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929306009] [2022-01-10 20:34:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:18,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:18,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:18,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929306009] [2022-01-10 20:34:18,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929306009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:18,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:18,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 20:34:18,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264656444] [2022-01-10 20:34:18,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:18,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 20:34:18,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 20:34:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:34:18,765 INFO L87 Difference]: Start difference. First operand has 21 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 20 states have internal predecessors, (29), 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-01-10 20:34:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:18,776 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2022-01-10 20:34:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 20:34:18,780 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2022-01-10 20:34:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:18,786 INFO L225 Difference]: With dead ends: 37 [2022-01-10 20:34:18,786 INFO L226 Difference]: Without dead ends: 17 [2022-01-10 20:34:18,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 20:34:18,791 INFO L933 BasicCegarLoop]: 25 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, 25 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 [2022-01-10 20:34:18,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:34:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-01-10 20:34:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-01-10 20:34:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-01-10 20:34:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-10 20:34:18,815 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 7 [2022-01-10 20:34:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:18,815 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-10 20:34:18,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-01-10 20:34:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-10 20:34:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-10 20:34:18,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:18,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:18,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 20:34:18,816 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:34:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:18,817 INFO L85 PathProgramCache]: Analyzing trace with hash 680866159, now seen corresponding path program 1 times [2022-01-10 20:34:18,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:18,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495148032] [2022-01-10 20:34:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:18,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:18,839 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:18,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318694360] [2022-01-10 20:34:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:18,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:18,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:18,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:18,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 20:34:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:18,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 20:34:18,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:19,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:19,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:19,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495148032] [2022-01-10 20:34:19,021 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:19,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318694360] [2022-01-10 20:34:19,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318694360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:19,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:19,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 20:34:19,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50008950] [2022-01-10 20:34:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:19,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 20:34:19,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 20:34:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:34:19,027 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-01-10 20:34:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:19,058 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-01-10 20:34:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 20:34:19,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2022-01-10 20:34:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:19,061 INFO L225 Difference]: With dead ends: 31 [2022-01-10 20:34:19,061 INFO L226 Difference]: Without dead ends: 19 [2022-01-10 20:34:19,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 20:34:19,064 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:19,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:34:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-01-10 20:34:19,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-01-10 20:34:19,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2022-01-10 20:34:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-10 20:34:19,071 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 8 [2022-01-10 20:34:19,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:19,071 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-10 20:34:19,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-01-10 20:34:19,071 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-10 20:34:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-10 20:34:19,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:19,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:19,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 20:34:19,272 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 [2022-01-10 20:34:19,273 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:34:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:19,274 INFO L85 PathProgramCache]: Analyzing trace with hash -333969099, now seen corresponding path program 1 times [2022-01-10 20:34:19,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:19,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67931430] [2022-01-10 20:34:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:19,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:19,291 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164381955] [2022-01-10 20:34:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:19,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:19,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:19,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:19,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 20:34:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:19,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 20:34:19,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:19,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:19,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:19,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:19,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67931430] [2022-01-10 20:34:19,667 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:19,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164381955] [2022-01-10 20:34:19,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164381955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:19,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:19,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 20:34:19,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558082377] [2022-01-10 20:34:19,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:19,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:34:19,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:19,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:34:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:19,672 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-10 20:34:19,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:19,705 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-01-10 20:34:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:34:19,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9 [2022-01-10 20:34:19,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:19,708 INFO L225 Difference]: With dead ends: 35 [2022-01-10 20:34:19,708 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 20:34:19,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:19,711 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:19,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:34:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 20:34:19,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-01-10 20:34:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 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) [2022-01-10 20:34:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-01-10 20:34:19,721 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 9 [2022-01-10 20:34:19,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:19,722 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-01-10 20:34:19,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-01-10 20:34:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-01-10 20:34:19,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 20:34:19,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:19,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:19,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 20:34:19,939 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 [2022-01-10 20:34:19,940 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:34:19,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:19,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1763144125, now seen corresponding path program 1 times [2022-01-10 20:34:19,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:19,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23716291] [2022-01-10 20:34:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:19,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:19,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:19,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561262643] [2022-01-10 20:34:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:19,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:19,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:19,977 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:20,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 20:34:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:20,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 20:34:20,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:20,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:20,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 20:34:20,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:20,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23716291] [2022-01-10 20:34:20,237 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:20,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561262643] [2022-01-10 20:34:20,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561262643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 20:34:20,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 20:34:20,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 20:34:20,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108394573] [2022-01-10 20:34:20,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:20,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:34:20,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:34:20,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 20:34:20,242 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-01-10 20:34:20,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:20,316 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-01-10 20:34:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 20:34:20,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) Word has length 10 [2022-01-10 20:34:20,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:20,318 INFO L225 Difference]: With dead ends: 29 [2022-01-10 20:34:20,318 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 20:34:20,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 20:34:20,322 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:20,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 59 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 20:34:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 20:34:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2022-01-10 20:34:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-01-10 20:34:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-01-10 20:34:20,326 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 10 [2022-01-10 20:34:20,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:20,326 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-01-10 20:34:20,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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) [2022-01-10 20:34:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-01-10 20:34:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 20:34:20,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:20,327 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:20,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 20:34:20,527 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 [2022-01-10 20:34:20,528 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:34:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2004489561, now seen corresponding path program 1 times [2022-01-10 20:34:20,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:20,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581290237] [2022-01-10 20:34:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:20,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:20,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:20,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233086041] [2022-01-10 20:34:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:20,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:20,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:20,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:20,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 20:34:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:20,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 20:34:20,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:21,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:34:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:23,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581290237] [2022-01-10 20:34:23,244 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233086041] [2022-01-10 20:34:23,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233086041] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 20:34:23,244 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 20:34:23,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-01-10 20:34:23,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283239746] [2022-01-10 20:34:23,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 20:34:23,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 20:34:23,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:23,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 20:34:23,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-10 20:34:23,246 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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) [2022-01-10 20:34:23,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:23,698 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-01-10 20:34:23,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 20:34:23,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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) Word has length 11 [2022-01-10 20:34:23,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:23,699 INFO L225 Difference]: With dead ends: 28 [2022-01-10 20:34:23,699 INFO L226 Difference]: Without dead ends: 13 [2022-01-10 20:34:23,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-01-10 20:34:23,700 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:23,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 20:34:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-01-10 20:34:23,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-01-10 20:34:23,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 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) [2022-01-10 20:34:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2022-01-10 20:34:23,703 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 11 [2022-01-10 20:34:23,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:23,703 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2022-01-10 20:34:23,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 11 states have internal predecessors, (20), 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) [2022-01-10 20:34:23,703 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2022-01-10 20:34:23,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-10 20:34:23,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 20:34:23,704 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 20:34:23,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 20:34:23,904 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 [2022-01-10 20:34:23,904 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 20:34:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 20:34:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2009597599, now seen corresponding path program 1 times [2022-01-10 20:34:23,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 20:34:23,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050873883] [2022-01-10 20:34:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:23,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 20:34:23,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 20:34:23,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151981638] [2022-01-10 20:34:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 20:34:23,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 20:34:23,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 20:34:23,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 20:34:23,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 20:34:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 20:34:24,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 20:34:24,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 20:34:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:24,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 20:34:25,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 20:34:25,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 20:34:25,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050873883] [2022-01-10 20:34:25,604 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 20:34:25,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151981638] [2022-01-10 20:34:25,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151981638] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 20:34:25,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 20:34:25,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-01-10 20:34:25,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284278388] [2022-01-10 20:34:25,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 20:34:25,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 20:34:25,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 20:34:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 20:34:25,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:34:25,606 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-01-10 20:34:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 20:34:25,608 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2022-01-10 20:34:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 20:34:25,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) Word has length 12 [2022-01-10 20:34:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 20:34:25,608 INFO L225 Difference]: With dead ends: 13 [2022-01-10 20:34:25,609 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 20:34:25,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 20:34:25,609 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 20:34:25,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-01-10 20:34:25,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 20:34:25,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 20:34:25,610 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) [2022-01-10 20:34:25,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 20:34:25,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-01-10 20:34:25,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 20:34:25,611 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 20:34:25,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-01-10 20:34:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 20:34:25,611 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 20:34:25,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 20:34:25,613 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 20:34:25,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 20:34:25,829 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 [2022-01-10 20:34:25,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 20:34:26,486 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 20:34:26,487 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 20:34:26,487 INFO L854 garLoopResultBuilder]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (<= 0 ~counter~0Int)) (.cse1 (forall ((|ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| Int)) (= (mod (+ |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (mod (* |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296)) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|)))) (or (and .cse0 (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|) (<= |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| 0) .cse1 (<= ~counter~0Int 0) (<= |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| 1) (= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|)) (and .cse0 (< ~counter~0Int 4294967296) (<= (div (+ (- 1) ~counter~0Int) (- 4294967296)) (div (+ (* (- 1) ~counter~0Int) 1) 4294967296)) .cse1))) [2022-01-10 20:34:26,487 INFO L858 garLoopResultBuilder]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2022-01-10 20:34:26,487 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2022-01-10 20:34:26,487 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2022-01-10 20:34:26,487 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 47) no Hoare annotation was computed. [2022-01-10 20:34:26,487 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-01-10 20:34:26,487 INFO L858 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2022-01-10 20:34:26,488 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2022-01-10 20:34:26,488 INFO L858 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2022-01-10 20:34:26,488 INFO L861 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2022-01-10 20:34:26,488 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2022-01-10 20:34:26,488 INFO L854 garLoopResultBuilder]: At program point L19-2(lines 18 24) the Hoare annotation is: false [2022-01-10 20:34:26,488 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-01-10 20:34:26,488 INFO L861 garLoopResultBuilder]: At program point L49(lines 26 50) the Hoare annotation is: true [2022-01-10 20:34:26,488 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-01-10 20:34:26,488 INFO L858 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2022-01-10 20:34:26,489 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 20:34:26,489 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 46) no Hoare annotation was computed. [2022-01-10 20:34:26,489 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 20:34:26,491 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-01-10 20:34:26,492 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 20:34:26,511 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] [2022-01-10 20:34:26,512 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] [2022-01-10 20:34:26,517 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] [2022-01-10 20:34:26,517 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] [2022-01-10 20:34:26,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:34:26 BasicIcfg [2022-01-10 20:34:26,518 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 20:34:26,519 INFO L158 Benchmark]: Toolchain (without parser) took 8895.35ms. Allocated memory was 172.0MB in the beginning and 257.9MB in the end (delta: 86.0MB). Free memory was 121.3MB in the beginning and 140.6MB in the end (delta: -19.3MB). Peak memory consumption was 66.8MB. Max. memory is 8.0GB. [2022-01-10 20:34:26,519 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 172.0MB. Free memory was 137.8MB in the beginning and 137.6MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 20:34:26,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.59ms. Allocated memory is still 172.0MB. Free memory was 121.1MB in the beginning and 147.4MB in the end (delta: -26.2MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-01-10 20:34:26,520 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.50ms. Allocated memory is still 172.0MB. Free memory was 147.4MB in the beginning and 145.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 20:34:26,520 INFO L158 Benchmark]: Boogie Preprocessor took 16.00ms. Allocated memory is still 172.0MB. Free memory was 145.8MB in the beginning and 144.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 20:34:26,520 INFO L158 Benchmark]: RCFGBuilder took 386.48ms. Allocated memory is still 172.0MB. Free memory was 144.7MB in the beginning and 134.8MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-10 20:34:26,521 INFO L158 Benchmark]: IcfgTransformer took 146.36ms. Allocated memory is still 172.0MB. Free memory was 134.8MB in the beginning and 131.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-01-10 20:34:26,521 INFO L158 Benchmark]: TraceAbstraction took 8070.44ms. Allocated memory was 172.0MB in the beginning and 257.9MB in the end (delta: 86.0MB). Free memory was 131.1MB in the beginning and 140.6MB in the end (delta: -9.5MB). Peak memory consumption was 77.0MB. Max. memory is 8.0GB. [2022-01-10 20:34:26,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 172.0MB. Free memory was 137.8MB in the beginning and 137.6MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 236.59ms. Allocated memory is still 172.0MB. Free memory was 121.1MB in the beginning and 147.4MB in the end (delta: -26.2MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.50ms. Allocated memory is still 172.0MB. Free memory was 147.4MB in the beginning and 145.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.00ms. Allocated memory is still 172.0MB. Free memory was 145.8MB in the beginning and 144.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 386.48ms. Allocated memory is still 172.0MB. Free memory was 144.7MB in the beginning and 134.8MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 146.36ms. Allocated memory is still 172.0MB. Free memory was 134.8MB in the beginning and 131.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 8070.44ms. Allocated memory was 172.0MB in the beginning and 257.9MB in the end (delta: 86.0MB). Free memory was 131.1MB in the beginning and 140.6MB in the end (delta: -9.5MB). Peak memory consumption was 77.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] * 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: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: 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 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 7.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 253 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 99 mSDtfsCounter, 88 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, InterpolantAutomatonStates: 30, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 67 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 72 ConstructedInterpolants, 8 QuantifiedInterpolants, 852 SizeOfPredicates, 16 NumberOfNonLiveVariables, 564 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 2/8 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 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant [2022-01-10 20:34:26,533 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] [2022-01-10 20:34:26,533 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] [2022-01-10 20:34:26,535 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] [2022-01-10 20:34:26,535 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0#1,QUANTIFIED] Derived loop invariant: (((~bvsle33((if !(0bv33 == ~bvurem33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33)) then (if ~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter))[32:32] == 1bv1 then ~bvadd16(~bvsdiv33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33), 1bv33) else ~bvsdiv33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33)) else ~bvsdiv33(~bvadd16(8589934591bv33, ~zero_extendFrom32To33(counter)), 4294967296bv33)), ~bvadd16(~sign_extendFrom8To32(~bvmul32(18446744073709551615bv64, ~zero_extendFrom32To64(counter))), 1bv65)[64:32]) && ~bvule32(0bv32, counter)) && (forall ULTIMATE.start_main_~b~0#1 : bv32 :: A == ~bvadd16(~zero_extendFrom32To33(r), ~zero_extendFrom32To33(~bvmul32(~zero_extendFrom32To64(q), ~zero_extendFrom32To64(ULTIMATE.start_main_~b~0#1))[31:0]))[31:0])) && ~bvult64(~zero_extendFrom32To33(counter), 4294967296bv33)) || ((((((~bvule32(0bv32, counter) && ~bvule32(counter, 0bv32)) && ~bvule32(q, 0bv32)) && (forall ULTIMATE.start_main_~b~0#1 : bv32 :: A == ~bvadd16(~zero_extendFrom32To33(r), ~zero_extendFrom32To33(~bvmul32(~zero_extendFrom32To64(q), ~zero_extendFrom32To64(ULTIMATE.start_main_~b~0#1))[31:0]))[31:0])) && r == A) && ~bvule32(0bv32, q)) && ~bvule32(b, 1bv32)) RESULT: Ultimate proved your program to be correct! [2022-01-10 20:34:26,559 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...