/usr/bin/java -ea -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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 15:16:58,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 15:16:58,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 15:16:58,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 15:16:58,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-15 15:16:58,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-15 15:16:58,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-15 15:16:58,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-15 15:16:58,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-15 15:16:58,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-15 15:16:58,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-15 15:16:58,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-15 15:16:58,282 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-15 15:16:58,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-15 15:16:58,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-15 15:16:58,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-15 15:16:58,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-15 15:16:58,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-15 15:16:58,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 15:16:58,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 15:16:58,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 15:16:58,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-15 15:16:58,316 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 15:16:58,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 15:16:58,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 15:16:58,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 15:16:58,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 15:16:58,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 15:16:58,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 15:16:58,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 15:16:58,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 15:16:58,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 15:16:58,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 15:16:58,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 15:16:58,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 15:16:58,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 15:16:58,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 15:16:58,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 15:16:58,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 15:16:58,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 15:16:58,319 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 15:16:58,320 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 15:16:58,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 15:16:58,320 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-15 15:16:58,320 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 15:16:58,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 15:16:58,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 15:16:58,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 15:16:58,511 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 15:16:58,512 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 15:16:58,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound100.c [2022-04-15 15:16:58,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db234f57/3a6e042646c0436ea8604dc13a0968e9/FLAGabd11e34f [2022-04-15 15:16:58,881 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 15:16:58,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound100.c [2022-04-15 15:16:58,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db234f57/3a6e042646c0436ea8604dc13a0968e9/FLAGabd11e34f [2022-04-15 15:16:58,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4db234f57/3a6e042646c0436ea8604dc13a0968e9 [2022-04-15 15:16:58,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 15:16:58,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 15:16:58,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 15:16:58,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 15:16:58,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 15:16:58,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 03:16:58" (1/1) ... [2022-04-15 15:16:58,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba39b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:58, skipping insertion in model container [2022-04-15 15:16:58,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 03:16:58" (1/1) ... [2022-04-15 15:16:58,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 15:16:58,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 15:16:59,084 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_unwindbound100.c[555,568] [2022-04-15 15:16:59,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 15:16:59,107 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 15:16:59,115 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_unwindbound100.c[555,568] [2022-04-15 15:16:59,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 15:16:59,134 INFO L208 MainTranslator]: Completed translation [2022-04-15 15:16:59,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59 WrapperNode [2022-04-15 15:16:59,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 15:16:59,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 15:16:59,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 15:16:59,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 15:16:59,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59" (1/1) ... [2022-04-15 15:16:59,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59" (1/1) ... [2022-04-15 15:16:59,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59" (1/1) ... [2022-04-15 15:16:59,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59" (1/1) ... [2022-04-15 15:16:59,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59" (1/1) ... [2022-04-15 15:16:59,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59" (1/1) ... [2022-04-15 15:16:59,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59" (1/1) ... [2022-04-15 15:16:59,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 15:16:59,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 15:16:59,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 15:16:59,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 15:16:59,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59" (1/1) ... [2022-04-15 15:16:59,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 15:16:59,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 15:16:59,198 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) [2022-04-15 15:16:59,215 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 [2022-04-15 15:16:59,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 15:16:59,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 15:16:59,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 15:16:59,234 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 15:16:59,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 15:16:59,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 15:16:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 15:16:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 15:16:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 15:16:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 15:16:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-15 15:16:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 15:16:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 15:16:59,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 15:16:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 15:16:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 15:16:59,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 15:16:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 15:16:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 15:16:59,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 15:16:59,284 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 15:16:59,285 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 15:16:59,421 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 15:16:59,425 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 15:16:59,425 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 15:16:59,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 03:16:59 BoogieIcfgContainer [2022-04-15 15:16:59,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 15:16:59,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 15:16:59,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 15:16:59,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 15:16:59,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 03:16:58" (1/3) ... [2022-04-15 15:16:59,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 03:16:59, skipping insertion in model container [2022-04-15 15:16:59,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 03:16:59" (2/3) ... [2022-04-15 15:16:59,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 03:16:59, skipping insertion in model container [2022-04-15 15:16:59,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 03:16:59" (3/3) ... [2022-04-15 15:16:59,431 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound100.c [2022-04-15 15:16:59,434 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 15:16:59,434 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 15:16:59,467 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 15:16:59,471 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-15 15:16:59,471 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 15:16:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 15:16:59,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-15 15:16:59,485 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 15:16:59,486 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 15:16:59,486 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 15:16:59,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 15:16:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1864317590, now seen corresponding path program 1 times [2022-04-15 15:16:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 15:16:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1651352982] [2022-04-15 15:16:59,504 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 15:16:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1864317590, now seen corresponding path program 2 times [2022-04-15 15:16:59,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 15:16:59,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140380842] [2022-04-15 15:16:59,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 15:16:59,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 15:16:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 15:16:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 15:16:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 15:16:59,637 INFO L290 TraceCheckUtils]: 0: Hoare triple {31#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {26#true} is VALID [2022-04-15 15:16:59,638 INFO L290 TraceCheckUtils]: 1: Hoare triple {26#true} assume true; {26#true} is VALID [2022-04-15 15:16:59,638 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} #55#return; {26#true} is VALID [2022-04-15 15:16:59,644 INFO L272 TraceCheckUtils]: 0: Hoare triple {26#true} call ULTIMATE.init(); {31#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 15:16:59,644 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {26#true} is VALID [2022-04-15 15:16:59,644 INFO L290 TraceCheckUtils]: 2: Hoare triple {26#true} assume true; {26#true} is VALID [2022-04-15 15:16:59,644 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26#true} {26#true} #55#return; {26#true} is VALID [2022-04-15 15:16:59,644 INFO L272 TraceCheckUtils]: 4: Hoare triple {26#true} call #t~ret7 := main(); {26#true} is VALID [2022-04-15 15:16:59,645 INFO L290 TraceCheckUtils]: 5: Hoare triple {26#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;~z~0 := #t~nondet4;havoc #t~nondet4;~k~0 := #t~nondet5;havoc #t~nondet5;~x~0 := 1;~y~0 := ~z~0 % 4294967296;~c~0 := 1; {26#true} is VALID [2022-04-15 15:16:59,645 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#true} assume !true; {27#false} is VALID [2022-04-15 15:16:59,646 INFO L290 TraceCheckUtils]: 7: Hoare triple {27#false} ~x~0 := ~x~0 * ((~z~0 - 1) % 4294967296); {27#false} is VALID [2022-04-15 15:16:59,646 INFO L272 TraceCheckUtils]: 8: Hoare triple {27#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {27#false} is VALID [2022-04-15 15:16:59,646 INFO L290 TraceCheckUtils]: 9: Hoare triple {27#false} ~cond := #in~cond; {27#false} is VALID [2022-04-15 15:16:59,646 INFO L290 TraceCheckUtils]: 10: Hoare triple {27#false} assume 0 == ~cond; {27#false} is VALID [2022-04-15 15:16:59,646 INFO L290 TraceCheckUtils]: 11: Hoare triple {27#false} assume !false; {27#false} is VALID [2022-04-15 15:16:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 15:16:59,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 15:16:59,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140380842] [2022-04-15 15:16:59,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140380842] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:16:59,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:16:59,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 15:16:59,649 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 15:16:59,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1651352982] [2022-04-15 15:16:59,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1651352982] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:16:59,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:16:59,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 15:16:59,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615020530] [2022-04-15 15:16:59,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 15:16:59,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 15:16:59,654 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 15:16:59,656 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:59,686 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:16:59,687 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 15:16:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 15:16:59,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 15:16:59,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 15:16:59,702 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:16:59,799 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-04-15 15:16:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 15:16:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 15:16:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 15:16:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-04-15 15:16:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-04-15 15:16:59,808 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 52 transitions. [2022-04-15 15:16:59,868 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:16:59,873 INFO L225 Difference]: With dead ends: 41 [2022-04-15 15:16:59,873 INFO L226 Difference]: Without dead ends: 19 [2022-04-15 15:16:59,875 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 15:16:59,877 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 15:16:59,878 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 15:16:59,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-15 15:16:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-04-15 15:16:59,902 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 15:16:59,902 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:59,903 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:59,903 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:59,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:16:59,905 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-15 15:16:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 15:16:59,906 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:16:59,906 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:16:59,906 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-15 15:16:59,907 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-15 15:16:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:16:59,909 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-15 15:16:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 15:16:59,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:16:59,909 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:16:59,909 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 15:16:59,910 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 15:16:59,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 15:16:59,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-04-15 15:16:59,920 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-04-15 15:16:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 15:16:59,921 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-04-15 15:16:59,921 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:16:59,921 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 18 states and 20 transitions. [2022-04-15 15:16:59,970 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:16:59,970 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-15 15:16:59,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-15 15:16:59,971 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 15:16:59,971 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 15:16:59,971 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 15:16:59,972 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 15:16:59,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 15:16:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2049175951, now seen corresponding path program 1 times [2022-04-15 15:16:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 15:16:59,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [812519961] [2022-04-15 15:16:59,974 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 15:16:59,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2049175951, now seen corresponding path program 2 times [2022-04-15 15:16:59,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 15:16:59,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4044804] [2022-04-15 15:16:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 15:16:59,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 15:16:59,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 15:16:59,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661127965] [2022-04-15 15:16:59,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 15:16:59,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 15:16:59,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 15:16:59,989 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) [2022-04-15 15:16:59,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 15:17:00,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 15:17:00,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 15:17:00,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-15 15:17:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 15:17:00,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 15:17:00,199 INFO L272 TraceCheckUtils]: 0: Hoare triple {190#true} call ULTIMATE.init(); {190#true} is VALID [2022-04-15 15:17:00,199 INFO L290 TraceCheckUtils]: 1: Hoare triple {190#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {190#true} is VALID [2022-04-15 15:17:00,199 INFO L290 TraceCheckUtils]: 2: Hoare triple {190#true} assume true; {190#true} is VALID [2022-04-15 15:17:00,199 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {190#true} {190#true} #55#return; {190#true} is VALID [2022-04-15 15:17:00,200 INFO L272 TraceCheckUtils]: 4: Hoare triple {190#true} call #t~ret7 := main(); {190#true} is VALID [2022-04-15 15:17:00,200 INFO L290 TraceCheckUtils]: 5: Hoare triple {190#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;~z~0 := #t~nondet4;havoc #t~nondet4;~k~0 := #t~nondet5;havoc #t~nondet5;~x~0 := 1;~y~0 := ~z~0 % 4294967296;~c~0 := 1; {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-15 15:17:00,201 INFO L290 TraceCheckUtils]: 6: Hoare triple {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-15 15:17:00,201 INFO L290 TraceCheckUtils]: 7: Hoare triple {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} assume !!(#t~post6 < 100);havoc #t~post6; {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-15 15:17:00,202 INFO L272 TraceCheckUtils]: 8: Hoare triple {210#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} call __VERIFIER_assert((if 0 == 1 + (~x~0 * (~z~0 % 4294967296) - ~x~0 - ~y~0) then 1 else 0)); {220#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 15:17:00,203 INFO L290 TraceCheckUtils]: 9: Hoare triple {220#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {224#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 15:17:00,203 INFO L290 TraceCheckUtils]: 10: Hoare triple {224#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {191#false} is VALID [2022-04-15 15:17:00,203 INFO L290 TraceCheckUtils]: 11: Hoare triple {191#false} assume !false; {191#false} is VALID [2022-04-15 15:17:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 15:17:00,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 15:17:00,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 15:17:00,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4044804] [2022-04-15 15:17:00,204 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 15:17:00,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661127965] [2022-04-15 15:17:00,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661127965] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:17:00,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:17:00,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 15:17:00,205 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 15:17:00,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [812519961] [2022-04-15 15:17:00,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [812519961] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:17:00,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:17:00,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 15:17:00,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936731605] [2022-04-15 15:17:00,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 15:17:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 15:17:00,207 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 15:17:00,207 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,218 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:17:00,219 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 15:17:00,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 15:17:00,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 15:17:00,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-15 15:17:00,220 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:17:00,321 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-04-15 15:17:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 15:17:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 15:17:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 15:17:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2022-04-15 15:17:00,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2022-04-15 15:17:00,329 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 33 transitions. [2022-04-15 15:17:00,354 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:17:00,359 INFO L225 Difference]: With dead ends: 29 [2022-04-15 15:17:00,359 INFO L226 Difference]: Without dead ends: 27 [2022-04-15 15:17:00,361 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-15 15:17:00,362 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 15:17:00,366 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 15:17:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-15 15:17:00,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-04-15 15:17:00,380 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 15:17:00,381 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 15:17:00,383 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 15:17:00,383 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 15:17:00,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:17:00,386 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-15 15:17:00,386 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-15 15:17:00,387 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:17:00,387 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:17:00,387 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-15 15:17:00,388 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-15 15:17:00,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:17:00,393 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-15 15:17:00,393 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-15 15:17:00,394 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:17:00,394 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:17:00,394 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 15:17:00,394 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 15:17:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 15:17:00,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-04-15 15:17:00,399 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2022-04-15 15:17:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 15:17:00,399 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-04-15 15:17:00,399 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,399 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 28 transitions. [2022-04-15 15:17:00,422 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:17:00,422 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-15 15:17:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-15 15:17:00,423 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 15:17:00,423 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 15:17:00,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-15 15:17:00,639 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 15:17:00,640 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 15:17:00,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 15:17:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash -975399299, now seen corresponding path program 1 times [2022-04-15 15:17:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 15:17:00,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [732377734] [2022-04-15 15:17:00,641 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 15:17:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash -975399299, now seen corresponding path program 2 times [2022-04-15 15:17:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 15:17:00,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247435163] [2022-04-15 15:17:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 15:17:00,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 15:17:00,653 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 15:17:00,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1217169453] [2022-04-15 15:17:00,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 15:17:00,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 15:17:00,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 15:17:00,655 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) [2022-04-15 15:17:00,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 15:17:00,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 15:17:00,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 15:17:00,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-15 15:17:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 15:17:00,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 15:17:00,799 INFO L272 TraceCheckUtils]: 0: Hoare triple {394#true} call ULTIMATE.init(); {394#true} is VALID [2022-04-15 15:17:00,800 INFO L290 TraceCheckUtils]: 1: Hoare triple {394#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {402#(<= ~counter~0 0)} is VALID [2022-04-15 15:17:00,800 INFO L290 TraceCheckUtils]: 2: Hoare triple {402#(<= ~counter~0 0)} assume true; {402#(<= ~counter~0 0)} is VALID [2022-04-15 15:17:00,801 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {402#(<= ~counter~0 0)} {394#true} #55#return; {402#(<= ~counter~0 0)} is VALID [2022-04-15 15:17:00,801 INFO L272 TraceCheckUtils]: 4: Hoare triple {402#(<= ~counter~0 0)} call #t~ret7 := main(); {402#(<= ~counter~0 0)} is VALID [2022-04-15 15:17:00,802 INFO L290 TraceCheckUtils]: 5: Hoare triple {402#(<= ~counter~0 0)} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;~z~0 := #t~nondet4;havoc #t~nondet4;~k~0 := #t~nondet5;havoc #t~nondet5;~x~0 := 1;~y~0 := ~z~0 % 4294967296;~c~0 := 1; {402#(<= ~counter~0 0)} is VALID [2022-04-15 15:17:00,802 INFO L290 TraceCheckUtils]: 6: Hoare triple {402#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {418#(<= |main_#t~post6| 0)} is VALID [2022-04-15 15:17:00,803 INFO L290 TraceCheckUtils]: 7: Hoare triple {418#(<= |main_#t~post6| 0)} assume !(#t~post6 < 100);havoc #t~post6; {395#false} is VALID [2022-04-15 15:17:00,803 INFO L290 TraceCheckUtils]: 8: Hoare triple {395#false} ~x~0 := ~x~0 * ((~z~0 - 1) % 4294967296); {395#false} is VALID [2022-04-15 15:17:00,804 INFO L272 TraceCheckUtils]: 9: Hoare triple {395#false} call __VERIFIER_assert((if 0 == 1 + ~x~0 - ~y~0 then 1 else 0)); {395#false} is VALID [2022-04-15 15:17:00,804 INFO L290 TraceCheckUtils]: 10: Hoare triple {395#false} ~cond := #in~cond; {395#false} is VALID [2022-04-15 15:17:00,804 INFO L290 TraceCheckUtils]: 11: Hoare triple {395#false} assume 0 == ~cond; {395#false} is VALID [2022-04-15 15:17:00,804 INFO L290 TraceCheckUtils]: 12: Hoare triple {395#false} assume !false; {395#false} is VALID [2022-04-15 15:17:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 15:17:00,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 15:17:00,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 15:17:00,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247435163] [2022-04-15 15:17:00,805 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 15:17:00,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217169453] [2022-04-15 15:17:00,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217169453] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:17:00,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:17:00,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 15:17:00,807 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 15:17:00,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [732377734] [2022-04-15 15:17:00,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [732377734] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 15:17:00,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 15:17:00,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 15:17:00,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617137862] [2022-04-15 15:17:00,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 15:17:00,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-15 15:17:00,808 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 15:17:00,809 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,818 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:17:00,818 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-15 15:17:00,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 15:17:00,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-15 15:17:00,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-15 15:17:00,820 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:17:00,864 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-15 15:17:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-15 15:17:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-15 15:17:00,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 15:17:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2022-04-15 15:17:00,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2022-04-15 15:17:00,867 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 30 transitions. [2022-04-15 15:17:00,886 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:17:00,887 INFO L225 Difference]: With dead ends: 33 [2022-04-15 15:17:00,887 INFO L226 Difference]: Without dead ends: 25 [2022-04-15 15:17:00,888 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-15 15:17:00,888 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 15:17:00,889 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 15:17:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-15 15:17:00,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-15 15:17:00,900 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 15:17:00,901 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 15:17:00,901 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 15:17:00,901 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 15:17:00,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:17:00,903 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-15 15:17:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-15 15:17:00,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:17:00,903 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:17:00,903 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-15 15:17:00,903 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-15 15:17:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 15:17:00,905 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-15 15:17:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-15 15:17:00,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 15:17:00,905 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 15:17:00,905 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 15:17:00,905 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 15:17:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 15:17:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-15 15:17:00,906 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2022-04-15 15:17:00,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 15:17:00,907 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-15 15:17:00,907 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 15:17:00,907 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 27 transitions. [2022-04-15 15:17:00,941 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 15:17:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-15 15:17:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-15 15:17:00,946 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 15:17:00,946 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 15:17:00,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-15 15:17:01,159 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-15 15:17:01,160 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 15:17:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 15:17:01,160 INFO L85 PathProgramCache]: Analyzing trace with hash 198190047, now seen corresponding path program 1 times [2022-04-15 15:17:01,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 15:17:01,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [475709511] [2022-04-15 15:17:01,161 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 15:17:01,161 INFO L85 PathProgramCache]: Analyzing trace with hash 198190047, now seen corresponding path program 2 times [2022-04-15 15:17:01,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 15:17:01,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200514999] [2022-04-15 15:17:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 15:17:01,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 15:17:01,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 15:17:01,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962872107] [2022-04-15 15:17:01,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 15:17:01,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 15:17:01,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 15:17:01,173 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) [2022-04-15 15:17:01,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-15 15:17:01,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 15:17:01,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-15 15:17:01,206 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-15 15:17:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-15 15:17:01,271 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-15 15:17:01,271 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-15 15:17:01,272 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-15 15:17:01,273 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-15 15:17:01,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-15 15:17:01,474 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 15:17:01,478 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2] [2022-04-15 15:17:01,480 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-15 15:17:01,492 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 15:17:01,492 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-15 15:17:01,492 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-15 15:17:01,492 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-15 15:17:01,492 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-15 15:17:01,492 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-15 15:17:01,492 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-15 15:17:01,492 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-15 15:17:01,492 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L33-3 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L33-4 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-15 15:17:01,493 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: L47 has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: L47-1 has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-15 15:17:01,494 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-15 15:17:01,494 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-15 15:17:01,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 03:17:01 BoogieIcfgContainer [2022-04-15 15:17:01,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-15 15:17:01,497 INFO L158 Benchmark]: Toolchain (without parser) took 2582.19ms. Allocated memory was 200.3MB in the beginning and 260.0MB in the end (delta: 59.8MB). Free memory was 150.2MB in the beginning and 177.3MB in the end (delta: -27.1MB). Peak memory consumption was 33.0MB. Max. memory is 8.0GB. [2022-04-15 15:17:01,497 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 200.3MB. Free memory was 166.9MB in the beginning and 166.7MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 15:17:01,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.35ms. Allocated memory is still 200.3MB. Free memory was 150.1MB in the beginning and 176.9MB in the end (delta: -26.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-15 15:17:01,497 INFO L158 Benchmark]: Boogie Preprocessor took 33.68ms. Allocated memory is still 200.3MB. Free memory was 176.9MB in the beginning and 175.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-15 15:17:01,498 INFO L158 Benchmark]: RCFGBuilder took 256.59ms. Allocated memory is still 200.3MB. Free memory was 175.4MB in the beginning and 164.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-15 15:17:01,498 INFO L158 Benchmark]: TraceAbstraction took 2068.19ms. Allocated memory was 200.3MB in the beginning and 260.0MB in the end (delta: 59.8MB). Free memory was 164.5MB in the beginning and 177.3MB in the end (delta: -12.8MB). Peak memory consumption was 47.8MB. Max. memory is 8.0GB. [2022-04-15 15:17:01,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 200.3MB. Free memory was 166.9MB in the beginning and 166.7MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.35ms. Allocated memory is still 200.3MB. Free memory was 150.1MB in the beginning and 176.9MB in the end (delta: -26.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.68ms. Allocated memory is still 200.3MB. Free memory was 176.9MB in the beginning and 175.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 256.59ms. Allocated memory is still 200.3MB. Free memory was 175.4MB in the beginning and 164.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2068.19ms. Allocated memory was 200.3MB in the beginning and 260.0MB in the end (delta: 59.8MB). Free memory was 164.5MB in the beginning and 177.3MB in the end (delta: -12.8MB). Peak memory consumption was 47.8MB. 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: [L22] int counter = 0; [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 [L33] EXPR counter++ [L33] COND TRUE counter++<100 [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L16] COND FALSE !(!(cond)) [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) [L36] COND TRUE !(c < k) [L45] x = x * (z - 1) [L47] CALL __VERIFIER_assert(1 + x - y == 0) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 58 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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! [2022-04-15 15:17:01,533 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...