/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/geo1-u_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 22:59:18,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 22:59:18,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 22:59:18,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 22:59:18,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 22:59:18,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 22:59:18,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 22:59:18,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 22:59:18,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 22:59:18,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 22:59:18,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 22:59:18,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 22:59:18,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 22:59:18,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 22:59:18,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 22:59:18,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 22:59:18,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 22:59:18,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 22:59:18,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 22:59:18,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 22:59:18,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 22:59:18,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 22:59:18,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 22:59:18,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 22:59:18,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 22:59:18,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 22:59:18,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 22:59:18,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 22:59:18,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 22:59:18,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 22:59:18,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 22:59:18,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 22:59:18,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 22:59:18,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 22:59:18,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 22:59:18,491 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 22:59:18,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 22:59:18,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 22:59:18,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 22:59:18,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:59:18,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 22:59:18,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 22:59:18,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 22:59:18,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 22:59:18,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 22:59:18,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 22:59:18,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 22:59:18,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 22:59:18,494 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 22:59:18,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 22:59:18,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 22:59:18,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 22:59:18,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 22:59:18,677 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 22:59:18,677 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 22:59:18,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound1.c [2022-02-23 22:59:18,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab048662d/14236c5c9ccf4dd38f1d7394d46f61bf/FLAGefb5074c7 [2022-02-23 22:59:19,104 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 22:59:19,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound1.c [2022-02-23 22:59:19,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab048662d/14236c5c9ccf4dd38f1d7394d46f61bf/FLAGefb5074c7 [2022-02-23 22:59:19,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab048662d/14236c5c9ccf4dd38f1d7394d46f61bf [2022-02-23 22:59:19,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 22:59:19,123 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 22:59:19,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 22:59:19,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 22:59:19,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 22:59:19,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cf9ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19, skipping insertion in model container [2022-02-23 22:59:19,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 22:59:19,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 22:59:19,253 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/geo1-u_valuebound1.c[555,568] [2022-02-23 22:59:19,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:59:19,274 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 22:59:19,287 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/geo1-u_valuebound1.c[555,568] [2022-02-23 22:59:19,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:59:19,308 INFO L208 MainTranslator]: Completed translation [2022-02-23 22:59:19,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19 WrapperNode [2022-02-23 22:59:19,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 22:59:19,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 22:59:19,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 22:59:19,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 22:59:19,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 22:59:19,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 22:59:19,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 22:59:19,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 22:59:19,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:59:19,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:59:19,352 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) [2022-02-23 22:59:19,353 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 [2022-02-23 22:59:19,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 22:59:19,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 22:59:19,379 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 22:59:19,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 22:59:19,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 22:59:19,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 22:59:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 22:59:19,419 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 22:59:19,421 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 22:59:19,491 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 22:59:19,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 22:59:19,495 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 22:59:19,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:59:19 BoogieIcfgContainer [2022-02-23 22:59:19,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 22:59:19,497 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 22:59:19,497 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 22:59:19,498 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 22:59:19,500 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:59:19" (1/1) ... [2022-02-23 22:59:19,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:59:19 BasicIcfg [2022-02-23 22:59:19,512 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 22:59:19,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 22:59:19,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 22:59:19,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 22:59:19,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:59:19" (1/4) ... [2022-02-23 22:59:19,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f96caf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:59:19, skipping insertion in model container [2022-02-23 22:59:19,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:59:19" (2/4) ... [2022-02-23 22:59:19,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f96caf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:59:19, skipping insertion in model container [2022-02-23 22:59:19,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:59:19" (3/4) ... [2022-02-23 22:59:19,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f96caf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:59:19, skipping insertion in model container [2022-02-23 22:59:19,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:59:19" (4/4) ... [2022-02-23 22:59:19,517 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound1.cqvasr [2022-02-23 22:59:19,520 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 22:59:19,520 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 22:59:19,548 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 22:59:19,553 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 [2022-02-23 22:59:19,553 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 22:59:19,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-02-23 22:59:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-23 22:59:19,567 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:59:19,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:59:19,568 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:59:19,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:59:19,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1045869758, now seen corresponding path program 1 times [2022-02-23 22:59:19,577 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:59:19,577 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322455407] [2022-02-23 22:59:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:59:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:19,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 22:59:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 22:59:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-02-23 22:59:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 22:59:19,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:59:19,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322455407] [2022-02-23 22:59:19,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322455407] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:59:19,707 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:59:19,707 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 22:59:19,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878531279] [2022-02-23 22:59:19,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:59:19,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 22:59:19,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:59:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 22:59:19,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 22:59:19,738 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-02-23 22:59:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:59:19,817 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2022-02-23 22:59:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 22:59:19,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 23 [2022-02-23 22:59:19,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:59:19,838 INFO L225 Difference]: With dead ends: 53 [2022-02-23 22:59:19,838 INFO L226 Difference]: Without dead ends: 25 [2022-02-23 22:59:19,840 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 [2022-02-23 22:59:19,843 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:59:19,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:59:19,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-02-23 22:59:19,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-02-23 22:59:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 22:59:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-02-23 22:59:19,880 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 23 [2022-02-23 22:59:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:59:19,880 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-02-23 22:59:19,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-02-23 22:59:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-02-23 22:59:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-23 22:59:19,881 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:59:19,881 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:59:19,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 22:59:19,882 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:59:19,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:59:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash 745967104, now seen corresponding path program 1 times [2022-02-23 22:59:19,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:59:19,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004306033] [2022-02-23 22:59:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:19,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:59:19,914 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:59:19,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144575240] [2022-02-23 22:59:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:19,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:59:19,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:59:19,922 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) [2022-02-23 22:59:19,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-23 22:59:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:59:19,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2022-02-23 22:59:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-23 22:59:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-23 22:59:20,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-23 22:59:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-23 22:59:20,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:59:20,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004306033] [2022-02-23 22:59:20,220 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-02-23 22:59:20,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144575240] [2022-02-23 22:59:20,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144575240] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-23 22:59:20,220 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-02-23 22:59:20,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-02-23 22:59:20,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138582698] [2022-02-23 22:59:20,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:59:20,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-23 22:59:20,222 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:59:20,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-23 22:59:20,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-02-23 22:59:20,223 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (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) [2022-02-23 22:59:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:59:20,392 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-02-23 22:59:20,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-23 22:59:20,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (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 23 [2022-02-23 22:59:20,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:59:20,394 INFO L225 Difference]: With dead ends: 31 [2022-02-23 22:59:20,394 INFO L226 Difference]: Without dead ends: 27 [2022-02-23 22:59:20,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-02-23 22:59:20,395 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-23 22:59:20,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-23 22:59:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-02-23 22:59:20,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-02-23 22:59:20,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-02-23 22:59:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-02-23 22:59:20,400 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2022-02-23 22:59:20,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:59:20,401 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-02-23 22:59:20,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (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) [2022-02-23 22:59:20,402 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-02-23 22:59:20,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-02-23 22:59:20,402 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:59:20,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:59:20,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-23 22:59:20,615 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 [2022-02-23 22:59:20,616 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:59:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:59:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1484020197, now seen corresponding path program 1 times [2022-02-23 22:59:20,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:59:20,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040203215] [2022-02-23 22:59:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:59:20,647 ERROR L252 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-02-23 22:59:20,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472127215] [2022-02-23 22:59:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:59:20,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-23 22:59:20,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:59:20,649 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) [2022-02-23 22:59:20,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-23 22:59:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 22:59:20,684 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-23 22:59:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 22:59:20,708 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-23 22:59:20,708 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-23 22:59:20,710 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 22:59:20,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-23 22:59:20,927 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 [2022-02-23 22:59:20,930 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-23 22:59:20,932 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 22:59:20,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:59:20 BasicIcfg [2022-02-23 22:59:20,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 22:59:20,957 INFO L158 Benchmark]: Toolchain (without parser) took 1834.40ms. Allocated memory was 194.0MB in the beginning and 296.7MB in the end (delta: 102.8MB). Free memory was 137.2MB in the beginning and 260.6MB in the end (delta: -123.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 22:59:20,958 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 22:59:20,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.24ms. Allocated memory is still 194.0MB. Free memory was 137.0MB in the beginning and 163.7MB in the end (delta: -26.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-02-23 22:59:20,958 INFO L158 Benchmark]: Boogie Preprocessor took 20.60ms. Allocated memory is still 194.0MB. Free memory was 163.7MB in the beginning and 162.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 22:59:20,958 INFO L158 Benchmark]: RCFGBuilder took 165.67ms. Allocated memory is still 194.0MB. Free memory was 162.3MB in the beginning and 152.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-23 22:59:20,960 INFO L158 Benchmark]: IcfgTransformer took 15.01ms. Allocated memory is still 194.0MB. Free memory was 152.3MB in the beginning and 150.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 22:59:20,962 INFO L158 Benchmark]: TraceAbstraction took 1443.92ms. Allocated memory was 194.0MB in the beginning and 296.7MB in the end (delta: 102.8MB). Free memory was 150.5MB in the beginning and 260.6MB in the end (delta: -110.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 22:59:20,964 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 194.0MB. Free memory is still 153.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.24ms. Allocated memory is still 194.0MB. Free memory was 137.0MB in the beginning and 163.7MB in the end (delta: -26.7MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.60ms. Allocated memory is still 194.0MB. Free memory was 163.7MB in the beginning and 162.3MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 165.67ms. Allocated memory is still 194.0MB. Free memory was 162.3MB in the beginning and 152.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 15.01ms. Allocated memory is still 194.0MB. Free memory was 152.3MB in the beginning and 150.9MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 1443.92ms. Allocated memory was 194.0MB in the beginning and 296.7MB in the end (delta: 102.8MB). Free memory was 150.5MB in the beginning and 260.6MB in the end (delta: -110.2MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L26] CALL assume_abort_if_not(z>=0 && z<=1) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L26] RET assume_abort_if_not(z>=0 && z<=1) VAL [z=0] [L27] k = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(k>=0 && k<=1) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(k>=0 && k<=1) VAL [k=1, z=0] [L30] x = 1 [L31] y = z [L32] c = 1 VAL [c=1, k=1, x=1, y=0, z=0] [L34] COND TRUE 1 VAL [c=1, k=1, x=1, y=0, z=0] [L35] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L35] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, k=1, x=1, y=0, z=0] [L37] COND TRUE !(c < k) VAL [c=1, k=1, x=1, y=0, z=0] [L46] x = x * (z - 1) VAL [c=1, k=1, x=4294967295, y=0, z=0] [L48] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 50 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 146 SizeOfPredicates, 2 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 9/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-23 22:59:20,983 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...