/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 01:46:05,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 01:46:05,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 01:46:05,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-31 01:46:05,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 01:46:05,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 01:46:05,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 01:46:05,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-01-31 01:46:05,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 01:46:05,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 01:46:05,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-31 01:46:05,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-31 01:46:05,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-31 01:46:05,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-31 01:46:05,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-31 01:46:05,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-31 01:46:05,270 INFO L138 SettingsManager]: * Use SBE=true [2022-01-31 01:46:05,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 01:46:05,270 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 01:46:05,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 01:46:05,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 01:46:05,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 01:46:05,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 01:46:05,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 01:46:05,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 01:46:05,271 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 01:46:05,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 01:46:05,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 01:46:05,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 01:46:05,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 01:46:05,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 01:46:05,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 01:46:05,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 01:46:05,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 01:46:05,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-31 01:46:05,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-31 01:46:05,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 01:46:05,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-31 01:46:05,273 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-31 01:46:05,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-31 01:46:05,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 01:46:05,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 01:46:05,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 01:46:05,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 01:46:05,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 01:46:05,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 01:46:05,598 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 01:46:05,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sqmf.c [2022-01-31 01:46:05,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300bb74b6/0fb60ac60a6747dbbc599ace8600b54f/FLAGe250d9049 [2022-01-31 01:46:06,057 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 01:46:06,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c [2022-01-31 01:46:06,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300bb74b6/0fb60ac60a6747dbbc599ace8600b54f/FLAGe250d9049 [2022-01-31 01:46:06,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/300bb74b6/0fb60ac60a6747dbbc599ace8600b54f [2022-01-31 01:46:06,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 01:46:06,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 01:46:06,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 01:46:06,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 01:46:06,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 01:46:06,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebb13f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06, skipping insertion in model container [2022-01-31 01:46:06,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 01:46:06,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 01:46:06,642 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c[587,600] [2022-01-31 01:46:06,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 01:46:06,672 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 01:46:06,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/sqmf.c[587,600] [2022-01-31 01:46:06,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 01:46:06,703 INFO L208 MainTranslator]: Completed translation [2022-01-31 01:46:06,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06 WrapperNode [2022-01-31 01:46:06,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 01:46:06,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 01:46:06,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 01:46:06,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 01:46:06,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 01:46:06,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 01:46:06,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 01:46:06,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 01:46:06,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06" (1/1) ... [2022-01-31 01:46:06,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 01:46:06,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 01:46:06,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 01:46:06,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 01:46:06,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 01:46:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 01:46:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 01:46:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 01:46:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 01:46:06,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 01:46:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 01:46:06,834 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 01:46:06,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 01:46:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 01:46:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 01:46:06,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 01:46:06,883 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 01:46:06,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 01:46:06,990 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 01:46:06,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 01:46:06,995 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 01:46:06,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:46:06 BoogieIcfgContainer [2022-01-31 01:46:06,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 01:46:06,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 01:46:06,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 01:46:07,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 01:46:07,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 01:46:06" (1/3) ... [2022-01-31 01:46:07,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb61cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 01:46:07, skipping insertion in model container [2022-01-31 01:46:07,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:46:06" (2/3) ... [2022-01-31 01:46:07,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb61cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 01:46:07, skipping insertion in model container [2022-01-31 01:46:07,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:46:06" (3/3) ... [2022-01-31 01:46:07,037 INFO L111 eAbstractionObserver]: Analyzing ICFG sqmf.c [2022-01-31 01:46:07,041 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-31 01:46:07,041 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 01:46:07,126 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 01:46:07,132 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 01:46:07,132 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 01:46:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 01:46:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 01:46:07,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 01:46:07,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 01:46:07,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 01:46:07,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 01:46:07,168 INFO L85 PathProgramCache]: Analyzing trace with hash 199879945, now seen corresponding path program 1 times [2022-01-31 01:46:07,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 01:46:07,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895614782] [2022-01-31 01:46:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 01:46:07,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 01:46:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 01:46:07,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 01:46:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 01:46:07,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 01:46:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 01:46:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 01:46:07,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 01:46:07,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895614782] [2022-01-31 01:46:07,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895614782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 01:46:07,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 01:46:07,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 01:46:07,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260834614] [2022-01-31 01:46:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 01:46:07,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 01:46:07,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 01:46:07,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 01:46:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 01:46:07,424 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 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 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 01:46:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 01:46:07,497 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-01-31 01:46:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 01:46:07,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-01-31 01:46:07,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 01:46:07,510 INFO L225 Difference]: With dead ends: 58 [2022-01-31 01:46:07,510 INFO L226 Difference]: Without dead ends: 29 [2022-01-31 01:46:07,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 01:46:07,518 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 01:46:07,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 01:46:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-01-31 01:46:07,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-01-31 01:46:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 01:46:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2022-01-31 01:46:07,547 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2022-01-31 01:46:07,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 01:46:07,548 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2022-01-31 01:46:07,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 01:46:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2022-01-31 01:46:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 01:46:07,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 01:46:07,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 01:46:07,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 01:46:07,550 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 01:46:07,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 01:46:07,551 INFO L85 PathProgramCache]: Analyzing trace with hash -386926069, now seen corresponding path program 1 times [2022-01-31 01:46:07,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 01:46:07,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619059856] [2022-01-31 01:46:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 01:46:07,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 01:46:07,591 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 01:46:07,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394502031] [2022-01-31 01:46:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 01:46:07,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 01:46:07,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 01:46:07,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 01:46:07,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 01:46:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 01:46:07,682 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 01:46:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 01:46:07,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 01:46:07,733 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 01:46:07,734 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 01:46:07,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 01:46:07,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 01:46:07,963 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-31 01:46:07,965 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 01:46:07,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 01:46:07 BoogieIcfgContainer [2022-01-31 01:46:07,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 01:46:07,981 INFO L158 Benchmark]: Toolchain (without parser) took 1471.95ms. Allocated memory was 203.4MB in the beginning and 244.3MB in the end (delta: 40.9MB). Free memory was 146.8MB in the beginning and 166.5MB in the end (delta: -19.7MB). Peak memory consumption was 21.7MB. Max. memory is 8.0GB. [2022-01-31 01:46:07,981 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 203.4MB. Free memory is still 163.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 01:46:07,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.09ms. Allocated memory was 203.4MB in the beginning and 244.3MB in the end (delta: 40.9MB). Free memory was 146.6MB in the beginning and 215.7MB in the end (delta: -69.2MB). Peak memory consumption was 5.7MB. Max. memory is 8.0GB. [2022-01-31 01:46:07,982 INFO L158 Benchmark]: Boogie Preprocessor took 54.62ms. Allocated memory is still 244.3MB. Free memory was 215.7MB in the beginning and 214.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 01:46:07,982 INFO L158 Benchmark]: RCFGBuilder took 236.18ms. Allocated memory is still 244.3MB. Free memory was 214.2MB in the beginning and 201.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 01:46:07,983 INFO L158 Benchmark]: TraceAbstraction took 982.89ms. Allocated memory is still 244.3MB. Free memory was 201.1MB in the beginning and 166.5MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2022-01-31 01:46:07,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 203.4MB. Free memory is still 163.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 192.09ms. Allocated memory was 203.4MB in the beginning and 244.3MB in the end (delta: 40.9MB). Free memory was 146.6MB in the beginning and 215.7MB in the end (delta: -69.2MB). Peak memory consumption was 5.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.62ms. Allocated memory is still 244.3MB. Free memory was 215.7MB in the beginning and 214.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 236.18ms. Allocated memory is still 244.3MB. Free memory was 214.2MB in the beginning and 201.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 982.89ms. Allocated memory is still 244.3MB. Free memory was 201.1MB in the beginning and 166.5MB in the end (delta: 34.6MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=9, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 0 [L32] a[0] = 0 [L34] i=1 VAL [\old(N)=0, a={4:0}, b={-1:0}, i=1, N=1] [L34] COND FALSE !(i