/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/geo1-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 10:45:30,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 10:45:30,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 10:45:30,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 10:45:30,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 10:45:30,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 10:45:30,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 10:45:30,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 10:45:30,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 10:45:30,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 10:45:30,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 10:45:30,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 10:45:30,897 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 10:45:30,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 10:45:30,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 10:45:30,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 10:45:30,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 10:45:30,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-08 10:45:30,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 10:45:30,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 10:45:30,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 10:45:30,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 10:45:30,924 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 10:45:30,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 10:45:30,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 10:45:30,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 10:45:30,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 10:45:30,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 10:45:30,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 10:45:30,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 10:45:30,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 10:45:30,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 10:45:30,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 10:45:30,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 10:45:30,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 10:45:30,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 10:45:30,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 10:45:30,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 10:45:30,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 10:45:30,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 10:45:30,927 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 10:45:30,927 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 10:45:30,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 10:45:30,928 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 10:45:30,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 10:45:31,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 10:45:31,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 10:45:31,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 10:45:31,149 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 10:45:31,149 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 10:45:31,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo1-u.c [2022-04-08 10:45:31,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f7cd887/583e8583d94f4dda80ede9e00e4b8b82/FLAG1a639b847 [2022-04-08 10:45:31,536 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 10:45:31,536 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1-u.c [2022-04-08 10:45:31,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f7cd887/583e8583d94f4dda80ede9e00e4b8b82/FLAG1a639b847 [2022-04-08 10:45:31,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9f7cd887/583e8583d94f4dda80ede9e00e4b8b82 [2022-04-08 10:45:31,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 10:45:31,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 10:45:31,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 10:45:31,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 10:45:31,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 10:45:31,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63bde04f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31, skipping insertion in model container [2022-04-08 10:45:31,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 10:45:31,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 10:45:31,704 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/geo1-u.c[555,568] [2022-04-08 10:45:31,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 10:45:31,733 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 10:45:31,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo1-u.c[555,568] [2022-04-08 10:45:31,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 10:45:31,761 INFO L208 MainTranslator]: Completed translation [2022-04-08 10:45:31,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31 WrapperNode [2022-04-08 10:45:31,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 10:45:31,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 10:45:31,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 10:45:31,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 10:45:31,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 10:45:31,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 10:45:31,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 10:45:31,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 10:45:31,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31" (1/1) ... [2022-04-08 10:45:31,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 10:45:31,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:45:31,837 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) [2022-04-08 10:45:31,852 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 [2022-04-08 10:45:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 10:45:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 10:45:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 10:45:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 10:45:31,869 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 10:45:31,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 10:45:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 10:45:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 10:45:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 10:45:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 10:45:31,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-08 10:45:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 10:45:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 10:45:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 10:45:31,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 10:45:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 10:45:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 10:45:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 10:45:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 10:45:31,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 10:45:31,921 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 10:45:31,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 10:45:32,056 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 10:45:32,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 10:45:32,061 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 10:45:32,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 10:45:32 BoogieIcfgContainer [2022-04-08 10:45:32,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 10:45:32,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 10:45:32,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 10:45:32,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 10:45:32,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 10:45:31" (1/3) ... [2022-04-08 10:45:32,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a23afff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 10:45:32, skipping insertion in model container [2022-04-08 10:45:32,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:45:31" (2/3) ... [2022-04-08 10:45:32,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a23afff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 10:45:32, skipping insertion in model container [2022-04-08 10:45:32,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 10:45:32" (3/3) ... [2022-04-08 10:45:32,084 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u.c [2022-04-08 10:45:32,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 10:45:32,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 10:45:32,131 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 10:45:32,136 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 [2022-04-08 10:45:32,136 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 10:45:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-04-08 10:45:32,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-08 10:45:32,169 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:45:32,169 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:45:32,170 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:45:32,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:45:32,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1656896310, now seen corresponding path program 1 times [2022-04-08 10:45:32,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:45:32,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1935511004] [2022-04-08 10:45:32,193 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 10:45:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1656896310, now seen corresponding path program 2 times [2022-04-08 10:45:32,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:45:32,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075097005] [2022-04-08 10:45:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:45:32,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:45:32,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 10:45:32,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035831776] [2022-04-08 10:45:32,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:45:32,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:45:32,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:45:32,289 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) [2022-04-08 10:45:32,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 10:45:32,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 10:45:32,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:45:32,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 10:45:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:45:32,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:45:32,505 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {25#true} is VALID [2022-04-08 10:45:32,518 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#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); {25#true} is VALID [2022-04-08 10:45:32,518 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-08 10:45:32,519 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} #54#return; {25#true} is VALID [2022-04-08 10:45:32,519 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} call #t~ret6 := main(); {25#true} is VALID [2022-04-08 10:45:32,520 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#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; {45#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-08 10:45:32,520 INFO L290 TraceCheckUtils]: 6: Hoare triple {45#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} assume !false; {45#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-08 10:45:32,522 INFO L272 TraceCheckUtils]: 7: Hoare triple {45#(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)); {52#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 10:45:32,522 INFO L290 TraceCheckUtils]: 8: Hoare triple {52#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {56#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 10:45:32,522 INFO L290 TraceCheckUtils]: 9: Hoare triple {56#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {26#false} is VALID [2022-04-08 10:45:32,523 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-04-08 10:45:32,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:45:32,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 10:45:32,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:45:32,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075097005] [2022-04-08 10:45:32,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 10:45:32,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035831776] [2022-04-08 10:45:32,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035831776] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:45:32,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:45:32,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 10:45:32,527 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:45:32,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1935511004] [2022-04-08 10:45:32,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1935511004] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:45:32,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:45:32,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 10:45:32,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086569172] [2022-04-08 10:45:32,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:45:32,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2022-04-08 10:45:32,534 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:45:32,536 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-04-08 10:45:32,563 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:45:32,563 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 10:45:32,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:45:32,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 10:45:32,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 10:45:32,585 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-04-08 10:45:32,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:45:32,724 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2022-04-08 10:45:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 10:45:32,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2022-04-08 10:45:32,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:45:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-04-08 10:45:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2022-04-08 10:45:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-04-08 10:45:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2022-04-08 10:45:32,734 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 61 transitions. [2022-04-08 10:45:32,785 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:45:32,793 INFO L225 Difference]: With dead ends: 46 [2022-04-08 10:45:32,793 INFO L226 Difference]: Without dead ends: 25 [2022-04-08 10:45:32,796 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-08 10:45:32,800 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 70 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 [2022-04-08 10:45:32,801 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 70 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:45:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-08 10:45:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-04-08 10:45:32,833 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:45:32,834 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 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) [2022-04-08 10:45:32,835 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 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) [2022-04-08 10:45:32,835 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 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) [2022-04-08 10:45:32,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:45:32,840 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-08 10:45:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-08 10:45:32,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:45:32,841 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:45:32,842 INFO L74 IsIncluded]: Start isIncluded. First operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 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. [2022-04-08 10:45:32,842 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 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. [2022-04-08 10:45:32,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:45:32,846 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-08 10:45:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-08 10:45:32,847 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:45:32,847 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:45:32,847 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:45:32,848 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:45:32,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 16 states have internal predecessors, (16), 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) [2022-04-08 10:45:32,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-04-08 10:45:32,854 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2022-04-08 10:45:32,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:45:32,854 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-04-08 10:45:32,855 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-04-08 10:45:32,855 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 24 transitions. [2022-04-08 10:45:32,875 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:45:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-04-08 10:45:32,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-08 10:45:32,876 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:45:32,876 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:45:32,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-08 10:45:33,087 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-08 10:45:33,088 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:45:33,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:45:33,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1736942409, now seen corresponding path program 1 times [2022-04-08 10:45:33,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:45:33,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [514151037] [2022-04-08 10:45:33,089 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 10:45:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1736942409, now seen corresponding path program 2 times [2022-04-08 10:45:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:45:33,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147129311] [2022-04-08 10:45:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:45:33,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:45:33,109 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 10:45:33,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528905730] [2022-04-08 10:45:33,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:45:33,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:45:33,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:45:33,115 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) [2022-04-08 10:45:33,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 10:45:33,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 10:45:33,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-08 10:45:33,156 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-08 10:45:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-08 10:45:33,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-08 10:45:33,181 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-08 10:45:33,181 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-08 10:45:33,183 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 10:45:33,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 10:45:33,401 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-04-08 10:45:33,404 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2] [2022-04-08 10:45:33,406 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 10:45:33,416 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 10:45:33,416 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-08 10:45:33,416 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: L32-2 has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: L32-2 has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: L32-2 has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-08 10:45:33,417 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L32-3 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L33 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L46 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2022-04-08 10:45:33,418 WARN L170 areAnnotationChecker]: L33-1 has no Hoare annotation [2022-04-08 10:45:33,419 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-08 10:45:33,419 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-08 10:45:33,419 WARN L170 areAnnotationChecker]: L46-1 has no Hoare annotation [2022-04-08 10:45:33,419 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-08 10:45:33,419 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-08 10:45:33,419 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. [2022-04-08 10:45:33,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 10:45:33 BoogieIcfgContainer [2022-04-08 10:45:33,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 10:45:33,427 INFO L158 Benchmark]: Toolchain (without parser) took 1871.59ms. Allocated memory is still 173.0MB. Free memory was 120.5MB in the beginning and 74.0MB in the end (delta: 46.6MB). Peak memory consumption was 46.9MB. Max. memory is 8.0GB. [2022-04-08 10:45:33,428 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 173.0MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 75.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 10:45:33,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.96ms. Allocated memory is still 173.0MB. Free memory was 120.4MB in the beginning and 144.2MB in the end (delta: -23.8MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. [2022-04-08 10:45:33,428 INFO L158 Benchmark]: Boogie Preprocessor took 38.26ms. Allocated memory is still 173.0MB. Free memory was 144.2MB in the beginning and 142.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 10:45:33,429 INFO L158 Benchmark]: RCFGBuilder took 261.07ms. Allocated memory is still 173.0MB. Free memory was 142.6MB in the beginning and 132.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 10:45:33,429 INFO L158 Benchmark]: TraceAbstraction took 1359.00ms. Allocated memory is still 173.0MB. Free memory was 131.6MB in the beginning and 74.0MB in the end (delta: 57.7MB). Peak memory consumption was 57.7MB. Max. memory is 8.0GB. [2022-04-08 10:45:33,430 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 0.14ms. Allocated memory is still 173.0MB. Free memory was 136.7MB in the beginning and 136.6MB in the end (delta: 75.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 208.96ms. Allocated memory is still 173.0MB. Free memory was 120.4MB in the beginning and 144.2MB in the end (delta: -23.8MB). Peak memory consumption was 12.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.26ms. Allocated memory is still 173.0MB. Free memory was 144.2MB in the beginning and 142.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 261.07ms. Allocated memory is still 173.0MB. Free memory was 142.6MB in the beginning and 132.2MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1359.00ms. Allocated memory is still 173.0MB. Free memory was 131.6MB in the beginning and 74.0MB in the end (delta: 57.7MB). Peak memory consumption was 57.7MB. 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] k = __VERIFIER_nondet_uint() [L28] x = 1 [L29] y = z [L30] c = 1 [L32] COND TRUE 1 [L33] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L16] COND FALSE !(!(cond)) [L33] RET __VERIFIER_assert(x*z - x - y + 1 == 0) [L35] COND TRUE !(c < k) [L44] x = x * (z - 1) [L46] CALL __VERIFIER_assert(1 + x - y == 0) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 24 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=1, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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! [2022-04-08 10:45:33,455 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...