/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/fermat2-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 12:44:16,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 12:44:16,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 12:44:16,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 12:44:16,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 12:44:16,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 12:44:16,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 12:44:16,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 12:44:16,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 12:44:16,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 12:44:16,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 12:44:16,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 12:44:16,581 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 12:44:16,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 12:44:16,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 12:44:16,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 12:44:16,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 12:44:16,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 12:44:16,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 12:44:16,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 12:44:16,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 12:44:16,595 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 12:44:16,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 12:44:16,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 12:44:16,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 12:44:16,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 12:44:16,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 12:44:16,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 12:44:16,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 12:44:16,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 12:44:16,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 12:44:16,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 12:44:16,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 12:44:16,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 12:44:16,607 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 12:44:16,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 12:44:16,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 12:44:16,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 12:44:16,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 12:44:16,807 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 12:44:16,808 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 12:44:16,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound50.c [2022-04-28 12:44:16,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6dd72dc6/4c47c3dedd894c07b6f7ab4dba87dce4/FLAGb19cbb236 [2022-04-28 12:44:17,231 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 12:44:17,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_valuebound50.c [2022-04-28 12:44:17,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6dd72dc6/4c47c3dedd894c07b6f7ab4dba87dce4/FLAGb19cbb236 [2022-04-28 12:44:17,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6dd72dc6/4c47c3dedd894c07b6f7ab4dba87dce4 [2022-04-28 12:44:17,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 12:44:17,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 12:44:17,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 12:44:17,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 12:44:17,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 12:44:17,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd8f9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17, skipping insertion in model container [2022-04-28 12:44:17,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 12:44:17,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 12:44:17,430 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/fermat2-ll_valuebound50.c[524,537] [2022-04-28 12:44:17,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 12:44:17,452 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 12:44:17,462 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/fermat2-ll_valuebound50.c[524,537] [2022-04-28 12:44:17,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 12:44:17,492 INFO L208 MainTranslator]: Completed translation [2022-04-28 12:44:17,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17 WrapperNode [2022-04-28 12:44:17,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 12:44:17,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 12:44:17,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 12:44:17,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 12:44:17,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 12:44:17,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 12:44:17,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 12:44:17,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 12:44:17,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17" (1/1) ... [2022-04-28 12:44:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 12:44:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:44:17,553 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) [2022-04-28 12:44:17,570 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 [2022-04-28 12:44:17,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 12:44:17,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 12:44:17,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 12:44:17,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 12:44:17,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 12:44:17,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 12:44:17,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 12:44:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 12:44:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 12:44:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 12:44:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 12:44:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 12:44:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 12:44:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 12:44:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 12:44:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 12:44:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 12:44:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 12:44:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 12:44:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 12:44:17,630 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 12:44:17,631 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 12:44:17,728 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 12:44:17,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 12:44:17,732 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 12:44:17,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 12:44:17 BoogieIcfgContainer [2022-04-28 12:44:17,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 12:44:17,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 12:44:17,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 12:44:17,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 12:44:17,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 12:44:17" (1/3) ... [2022-04-28 12:44:17,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8392d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 12:44:17, skipping insertion in model container [2022-04-28 12:44:17,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 12:44:17" (2/3) ... [2022-04-28 12:44:17,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8392d80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 12:44:17, skipping insertion in model container [2022-04-28 12:44:17,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 12:44:17" (3/3) ... [2022-04-28 12:44:17,737 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound50.c [2022-04-28 12:44:17,745 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 12:44:17,746 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 12:44:17,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 12:44:17,773 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e999177, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3965362c [2022-04-28 12:44:17,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 12:44:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-28 12:44:17,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-28 12:44:17,783 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:44:17,783 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 12:44:17,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:44:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:44:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1790211013, now seen corresponding path program 1 times [2022-04-28 12:44:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:44:17,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1110013737] [2022-04-28 12:44:17,808 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:44:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1790211013, now seen corresponding path program 2 times [2022-04-28 12:44:17,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:44:17,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609583259] [2022-04-28 12:44:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:44:17,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:44:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:44:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 12:44:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:44:17,986 INFO L290 TraceCheckUtils]: 0: Hoare triple {56#(and (= |#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(13, 2);call #Ultimate.allocInit(12, 3); {35#true} is VALID [2022-04-28 12:44:17,986 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume true; {35#true} is VALID [2022-04-28 12:44:17,986 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {35#true} {35#true} #73#return; {35#true} is VALID [2022-04-28 12:44:17,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 12:44:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:44:18,000 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 12:44:18,001 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 12:44:18,001 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 12:44:18,001 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {35#true} #61#return; {36#false} is VALID [2022-04-28 12:44:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-28 12:44:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:44:18,025 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 12:44:18,025 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 12:44:18,026 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 12:44:18,026 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #63#return; {36#false} is VALID [2022-04-28 12:44:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-28 12:44:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:44:18,031 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 12:44:18,032 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 12:44:18,032 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 12:44:18,032 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #65#return; {36#false} is VALID [2022-04-28 12:44:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-28 12:44:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:44:18,046 INFO L290 TraceCheckUtils]: 0: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 12:44:18,046 INFO L290 TraceCheckUtils]: 1: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 12:44:18,047 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 12:44:18,047 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#false} {36#false} #67#return; {36#false} is VALID [2022-04-28 12:44:18,048 INFO L272 TraceCheckUtils]: 0: Hoare triple {35#true} call ULTIMATE.init(); {56#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 12:44:18,048 INFO L290 TraceCheckUtils]: 1: Hoare triple {56#(and (= |#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(13, 2);call #Ultimate.allocInit(12, 3); {35#true} is VALID [2022-04-28 12:44:18,048 INFO L290 TraceCheckUtils]: 2: Hoare triple {35#true} assume true; {35#true} is VALID [2022-04-28 12:44:18,048 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {35#true} {35#true} #73#return; {35#true} is VALID [2022-04-28 12:44:18,048 INFO L272 TraceCheckUtils]: 4: Hoare triple {35#true} call #t~ret6 := main(); {35#true} is VALID [2022-04-28 12:44:18,048 INFO L290 TraceCheckUtils]: 5: Hoare triple {35#true} havoc ~A~0;havoc ~R~0;havoc ~u~0;havoc ~v~0;havoc ~r~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~A~0 := #t~nondet4;havoc #t~nondet4; {35#true} is VALID [2022-04-28 12:44:18,048 INFO L272 TraceCheckUtils]: 6: Hoare triple {35#true} call assume_abort_if_not((if ~A~0 >= 0 && ~A~0 <= 50 then 1 else 0)); {35#true} is VALID [2022-04-28 12:44:18,049 INFO L290 TraceCheckUtils]: 7: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 12:44:18,049 INFO L290 TraceCheckUtils]: 8: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 12:44:18,049 INFO L290 TraceCheckUtils]: 9: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 12:44:18,049 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {36#false} {35#true} #61#return; {36#false} is VALID [2022-04-28 12:44:18,049 INFO L290 TraceCheckUtils]: 11: Hoare triple {36#false} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~R~0 := #t~nondet5;havoc #t~nondet5; {36#false} is VALID [2022-04-28 12:44:18,050 INFO L272 TraceCheckUtils]: 12: Hoare triple {36#false} call assume_abort_if_not((if ~R~0 >= 0 && ~R~0 <= 50 then 1 else 0)); {35#true} is VALID [2022-04-28 12:44:18,050 INFO L290 TraceCheckUtils]: 13: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 12:44:18,050 INFO L290 TraceCheckUtils]: 14: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 12:44:18,050 INFO L290 TraceCheckUtils]: 15: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 12:44:18,050 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {36#false} {36#false} #63#return; {36#false} is VALID [2022-04-28 12:44:18,050 INFO L272 TraceCheckUtils]: 17: Hoare triple {36#false} call assume_abort_if_not((if (~R~0 - 1) * (~R~0 - 1) < ~A~0 then 1 else 0)); {35#true} is VALID [2022-04-28 12:44:18,051 INFO L290 TraceCheckUtils]: 18: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 12:44:18,051 INFO L290 TraceCheckUtils]: 19: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 12:44:18,051 INFO L290 TraceCheckUtils]: 20: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 12:44:18,051 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {36#false} {36#false} #65#return; {36#false} is VALID [2022-04-28 12:44:18,051 INFO L272 TraceCheckUtils]: 22: Hoare triple {36#false} call assume_abort_if_not((if 1 == (if ~A~0 < 0 && 0 != ~A~0 % 2 then ~A~0 % 2 - 2 else ~A~0 % 2) then 1 else 0)); {35#true} is VALID [2022-04-28 12:44:18,051 INFO L290 TraceCheckUtils]: 23: Hoare triple {35#true} ~cond := #in~cond; {35#true} is VALID [2022-04-28 12:44:18,052 INFO L290 TraceCheckUtils]: 24: Hoare triple {35#true} assume 0 == ~cond;assume false; {36#false} is VALID [2022-04-28 12:44:18,052 INFO L290 TraceCheckUtils]: 25: Hoare triple {36#false} assume true; {36#false} is VALID [2022-04-28 12:44:18,052 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {36#false} {36#false} #67#return; {36#false} is VALID [2022-04-28 12:44:18,052 INFO L290 TraceCheckUtils]: 27: Hoare triple {36#false} ~u~0 := 1 + 2 * ~R~0;~v~0 := 1;~r~0 := ~R~0 * ~R~0 - ~A~0; {36#false} is VALID [2022-04-28 12:44:18,052 INFO L290 TraceCheckUtils]: 28: Hoare triple {36#false} assume !true; {36#false} is VALID [2022-04-28 12:44:18,053 INFO L272 TraceCheckUtils]: 29: Hoare triple {36#false} call __VERIFIER_assert((if 4 * ~A~0 == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {36#false} is VALID [2022-04-28 12:44:18,053 INFO L290 TraceCheckUtils]: 30: Hoare triple {36#false} ~cond := #in~cond; {36#false} is VALID [2022-04-28 12:44:18,053 INFO L290 TraceCheckUtils]: 31: Hoare triple {36#false} assume 0 == ~cond; {36#false} is VALID [2022-04-28 12:44:18,053 INFO L290 TraceCheckUtils]: 32: Hoare triple {36#false} assume !false; {36#false} is VALID [2022-04-28 12:44:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-28 12:44:18,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:44:18,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609583259] [2022-04-28 12:44:18,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609583259] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:44:18,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:44:18,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 12:44:18,056 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:44:18,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1110013737] [2022-04-28 12:44:18,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1110013737] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:44:18,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:44:18,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 12:44:18,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201095614] [2022-04-28 12:44:18,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:44:18,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-28 12:44:18,062 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:44:18,064 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 12:44:18,102 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:44:18,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 12:44:18,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:44:18,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 12:44:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 12:44:18,125 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 12:44:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:44:18,271 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2022-04-28 12:44:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 12:44:18,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-28 12:44:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:44:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 12:44:18,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2022-04-28 12:44:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 12:44:18,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2022-04-28 12:44:18,287 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 80 transitions. [2022-04-28 12:44:18,401 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 80 edges. 80 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:44:18,407 INFO L225 Difference]: With dead ends: 57 [2022-04-28 12:44:18,407 INFO L226 Difference]: Without dead ends: 27 [2022-04-28 12:44:18,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 12:44:18,411 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 12:44:18,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 12:44:18,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-28 12:44:18,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-28 12:44:18,432 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:44:18,433 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 12:44:18,433 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 12:44:18,433 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 12:44:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:44:18,436 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-04-28 12:44:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-04-28 12:44:18,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:44:18,437 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:44:18,437 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 27 states. [2022-04-28 12:44:18,437 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 27 states. [2022-04-28 12:44:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:44:18,439 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-04-28 12:44:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-04-28 12:44:18,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:44:18,440 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:44:18,440 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:44:18,440 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:44:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 12:44:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-04-28 12:44:18,443 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 33 [2022-04-28 12:44:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:44:18,443 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-04-28 12:44:18,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-28 12:44:18,443 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 27 states and 32 transitions. [2022-04-28 12:44:18,473 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:44:18,474 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-04-28 12:44:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-28 12:44:18,475 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:44:18,475 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 12:44:18,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 12:44:18,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:44:18,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:44:18,476 INFO L85 PathProgramCache]: Analyzing trace with hash -102231875, now seen corresponding path program 1 times [2022-04-28 12:44:18,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:44:18,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1083746260] [2022-04-28 12:44:18,478 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:44:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash -102231875, now seen corresponding path program 2 times [2022-04-28 12:44:18,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:44:18,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121991354] [2022-04-28 12:44:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:44:18,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:44:18,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:44:18,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682755966] [2022-04-28 12:44:18,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:44:18,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:44:18,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:44:18,517 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) [2022-04-28 12:44:18,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 12:44:18,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 12:44:18,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:44:18,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-28 12:44:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:44:18,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:44:19,700 INFO L272 TraceCheckUtils]: 0: Hoare triple {281#true} call ULTIMATE.init(); {281#true} is VALID [2022-04-28 12:44:19,700 INFO L290 TraceCheckUtils]: 1: Hoare triple {281#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(13, 2);call #Ultimate.allocInit(12, 3); {281#true} is VALID [2022-04-28 12:44:19,700 INFO L290 TraceCheckUtils]: 2: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-28 12:44:19,700 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {281#true} {281#true} #73#return; {281#true} is VALID [2022-04-28 12:44:19,700 INFO L272 TraceCheckUtils]: 4: Hoare triple {281#true} call #t~ret6 := main(); {281#true} is VALID [2022-04-28 12:44:19,701 INFO L290 TraceCheckUtils]: 5: Hoare triple {281#true} havoc ~A~0;havoc ~R~0;havoc ~u~0;havoc ~v~0;havoc ~r~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~A~0 := #t~nondet4;havoc #t~nondet4; {281#true} is VALID [2022-04-28 12:44:19,701 INFO L272 TraceCheckUtils]: 6: Hoare triple {281#true} call assume_abort_if_not((if ~A~0 >= 0 && ~A~0 <= 50 then 1 else 0)); {281#true} is VALID [2022-04-28 12:44:19,701 INFO L290 TraceCheckUtils]: 7: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-28 12:44:19,701 INFO L290 TraceCheckUtils]: 8: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-28 12:44:19,701 INFO L290 TraceCheckUtils]: 9: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-28 12:44:19,701 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {281#true} {281#true} #61#return; {281#true} is VALID [2022-04-28 12:44:19,702 INFO L290 TraceCheckUtils]: 11: Hoare triple {281#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~R~0 := #t~nondet5;havoc #t~nondet5; {281#true} is VALID [2022-04-28 12:44:19,702 INFO L272 TraceCheckUtils]: 12: Hoare triple {281#true} call assume_abort_if_not((if ~R~0 >= 0 && ~R~0 <= 50 then 1 else 0)); {281#true} is VALID [2022-04-28 12:44:19,702 INFO L290 TraceCheckUtils]: 13: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-28 12:44:19,702 INFO L290 TraceCheckUtils]: 14: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-28 12:44:19,702 INFO L290 TraceCheckUtils]: 15: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-28 12:44:19,702 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {281#true} {281#true} #63#return; {281#true} is VALID [2022-04-28 12:44:19,702 INFO L272 TraceCheckUtils]: 17: Hoare triple {281#true} call assume_abort_if_not((if (~R~0 - 1) * (~R~0 - 1) < ~A~0 then 1 else 0)); {281#true} is VALID [2022-04-28 12:44:19,703 INFO L290 TraceCheckUtils]: 18: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-28 12:44:19,703 INFO L290 TraceCheckUtils]: 19: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-28 12:44:19,703 INFO L290 TraceCheckUtils]: 20: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-28 12:44:19,703 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {281#true} {281#true} #65#return; {281#true} is VALID [2022-04-28 12:44:19,703 INFO L272 TraceCheckUtils]: 22: Hoare triple {281#true} call assume_abort_if_not((if 1 == (if ~A~0 < 0 && 0 != ~A~0 % 2 then ~A~0 % 2 - 2 else ~A~0 % 2) then 1 else 0)); {281#true} is VALID [2022-04-28 12:44:19,703 INFO L290 TraceCheckUtils]: 23: Hoare triple {281#true} ~cond := #in~cond; {281#true} is VALID [2022-04-28 12:44:19,703 INFO L290 TraceCheckUtils]: 24: Hoare triple {281#true} assume !(0 == ~cond); {281#true} is VALID [2022-04-28 12:44:19,704 INFO L290 TraceCheckUtils]: 25: Hoare triple {281#true} assume true; {281#true} is VALID [2022-04-28 12:44:19,704 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {281#true} {281#true} #67#return; {281#true} is VALID [2022-04-28 12:44:21,708 WARN L290 TraceCheckUtils]: 27: Hoare triple {281#true} ~u~0 := 1 + 2 * ~R~0;~v~0 := 1;~r~0 := ~R~0 * ~R~0 - ~A~0; {367#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} is UNKNOWN [2022-04-28 12:44:21,709 INFO L290 TraceCheckUtils]: 28: Hoare triple {367#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} assume !false; {367#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} is VALID [2022-04-28 12:44:22,909 INFO L272 TraceCheckUtils]: 29: Hoare triple {367#(and (= (+ (* (- 1) main_~A~0) (* (div (+ (* (- 1) main_~u~0) 1) (- 2)) (div (+ (* (- 1) main_~u~0) 1) (- 2)))) main_~r~0) (= (mod (+ main_~u~0 1) 2) 0) (= main_~v~0 1))} call __VERIFIER_assert((if 4 * (~A~0 + ~r~0) == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {374#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 12:44:22,910 INFO L290 TraceCheckUtils]: 30: Hoare triple {374#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {378#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:44:22,911 INFO L290 TraceCheckUtils]: 31: Hoare triple {378#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {282#false} is VALID [2022-04-28 12:44:22,911 INFO L290 TraceCheckUtils]: 32: Hoare triple {282#false} assume !false; {282#false} is VALID [2022-04-28 12:44:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-28 12:44:22,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 12:44:22,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:44:22,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121991354] [2022-04-28 12:44:22,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:44:22,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682755966] [2022-04-28 12:44:22,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682755966] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:44:22,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:44:22,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 12:44:22,913 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:44:22,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1083746260] [2022-04-28 12:44:22,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1083746260] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:44:22,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:44:22,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 12:44:22,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997813534] [2022-04-28 12:44:22,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:44:22,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-04-28 12:44:22,914 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:44:22,914 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 12:44:24,099 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:44:24,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 12:44:24,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:44:24,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 12:44:24,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 12:44:24,100 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 12:44:28,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 12:44:28,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:44:28,514 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-04-28 12:44:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 12:44:28,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-04-28 12:44:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:44:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 12:44:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2022-04-28 12:44:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 12:44:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 45 transitions. [2022-04-28 12:44:28,517 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 45 transitions. [2022-04-28 12:44:30,340 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 45 edges. 45 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:44:30,341 INFO L225 Difference]: With dead ends: 38 [2022-04-28 12:44:30,341 INFO L226 Difference]: Without dead ends: 36 [2022-04-28 12:44:30,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 12:44:30,342 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-04-28 12:44:30,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 93 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-04-28 12:44:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-04-28 12:44:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-04-28 12:44:30,371 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:44:30,371 INFO L82 GeneralOperation]: Start isEquivalent. First operand 36 states. Second operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-28 12:44:30,371 INFO L74 IsIncluded]: Start isIncluded. First operand 36 states. Second operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-28 12:44:30,372 INFO L87 Difference]: Start difference. First operand 36 states. Second operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-28 12:44:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:44:30,373 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-04-28 12:44:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-04-28 12:44:30,375 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:44:30,375 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:44:30,375 INFO L74 IsIncluded]: Start isIncluded. First operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 36 states. [2022-04-28 12:44:30,376 INFO L87 Difference]: Start difference. First operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 36 states. [2022-04-28 12:44:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:44:30,377 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-04-28 12:44:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2022-04-28 12:44:30,378 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:44:30,378 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:44:30,378 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:44:30,378 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:44:30,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-28 12:44:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-04-28 12:44:30,380 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 33 [2022-04-28 12:44:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:44:30,380 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-04-28 12:44:30,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-28 12:44:30,380 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 35 states and 42 transitions. [2022-04-28 12:44:36,043 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 40 inductive. 0 not inductive. 2 times theorem prover too weak to decide inductivity. [2022-04-28 12:44:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-04-28 12:44:36,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-28 12:44:36,044 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 12:44:36,044 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 12:44:36,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 12:44:36,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:44:36,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 12:44:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 12:44:36,246 INFO L85 PathProgramCache]: Analyzing trace with hash -453872510, now seen corresponding path program 1 times [2022-04-28 12:44:36,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 12:44:36,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [548141036] [2022-04-28 12:44:36,246 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 12:44:36,246 INFO L85 PathProgramCache]: Analyzing trace with hash -453872510, now seen corresponding path program 2 times [2022-04-28 12:44:36,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 12:44:36,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239903474] [2022-04-28 12:44:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 12:44:36,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 12:44:36,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 12:44:36,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265801768] [2022-04-28 12:44:36,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 12:44:36,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 12:44:36,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 12:44:36,282 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) [2022-04-28 12:44:36,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 12:44:36,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 12:44:36,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 12:44:36,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-28 12:44:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 12:44:36,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 12:44:36,532 INFO L272 TraceCheckUtils]: 0: Hoare triple {604#true} call ULTIMATE.init(); {604#true} is VALID [2022-04-28 12:44:36,532 INFO L290 TraceCheckUtils]: 1: Hoare triple {604#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(13, 2);call #Ultimate.allocInit(12, 3); {604#true} is VALID [2022-04-28 12:44:36,532 INFO L290 TraceCheckUtils]: 2: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,532 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {604#true} {604#true} #73#return; {604#true} is VALID [2022-04-28 12:44:36,533 INFO L272 TraceCheckUtils]: 4: Hoare triple {604#true} call #t~ret6 := main(); {604#true} is VALID [2022-04-28 12:44:36,533 INFO L290 TraceCheckUtils]: 5: Hoare triple {604#true} havoc ~A~0;havoc ~R~0;havoc ~u~0;havoc ~v~0;havoc ~r~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~A~0 := #t~nondet4;havoc #t~nondet4; {604#true} is VALID [2022-04-28 12:44:36,533 INFO L272 TraceCheckUtils]: 6: Hoare triple {604#true} call assume_abort_if_not((if ~A~0 >= 0 && ~A~0 <= 50 then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,533 INFO L290 TraceCheckUtils]: 7: Hoare triple {604#true} ~cond := #in~cond; {604#true} is VALID [2022-04-28 12:44:36,533 INFO L290 TraceCheckUtils]: 8: Hoare triple {604#true} assume !(0 == ~cond); {604#true} is VALID [2022-04-28 12:44:36,533 INFO L290 TraceCheckUtils]: 9: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,533 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {604#true} {604#true} #61#return; {604#true} is VALID [2022-04-28 12:44:36,533 INFO L290 TraceCheckUtils]: 11: Hoare triple {604#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~R~0 := #t~nondet5;havoc #t~nondet5; {604#true} is VALID [2022-04-28 12:44:36,533 INFO L272 TraceCheckUtils]: 12: Hoare triple {604#true} call assume_abort_if_not((if ~R~0 >= 0 && ~R~0 <= 50 then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,534 INFO L290 TraceCheckUtils]: 13: Hoare triple {604#true} ~cond := #in~cond; {604#true} is VALID [2022-04-28 12:44:36,534 INFO L290 TraceCheckUtils]: 14: Hoare triple {604#true} assume !(0 == ~cond); {604#true} is VALID [2022-04-28 12:44:36,534 INFO L290 TraceCheckUtils]: 15: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,535 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {604#true} {604#true} #63#return; {604#true} is VALID [2022-04-28 12:44:36,535 INFO L272 TraceCheckUtils]: 17: Hoare triple {604#true} call assume_abort_if_not((if (~R~0 - 1) * (~R~0 - 1) < ~A~0 then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,536 INFO L290 TraceCheckUtils]: 18: Hoare triple {604#true} ~cond := #in~cond; {604#true} is VALID [2022-04-28 12:44:36,536 INFO L290 TraceCheckUtils]: 19: Hoare triple {604#true} assume !(0 == ~cond); {604#true} is VALID [2022-04-28 12:44:36,536 INFO L290 TraceCheckUtils]: 20: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,536 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {604#true} {604#true} #65#return; {604#true} is VALID [2022-04-28 12:44:36,536 INFO L272 TraceCheckUtils]: 22: Hoare triple {604#true} call assume_abort_if_not((if 1 == (if ~A~0 < 0 && 0 != ~A~0 % 2 then ~A~0 % 2 - 2 else ~A~0 % 2) then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,536 INFO L290 TraceCheckUtils]: 23: Hoare triple {604#true} ~cond := #in~cond; {604#true} is VALID [2022-04-28 12:44:36,536 INFO L290 TraceCheckUtils]: 24: Hoare triple {604#true} assume !(0 == ~cond); {604#true} is VALID [2022-04-28 12:44:36,536 INFO L290 TraceCheckUtils]: 25: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,537 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {604#true} {604#true} #67#return; {604#true} is VALID [2022-04-28 12:44:36,537 INFO L290 TraceCheckUtils]: 27: Hoare triple {604#true} ~u~0 := 1 + 2 * ~R~0;~v~0 := 1;~r~0 := ~R~0 * ~R~0 - ~A~0; {604#true} is VALID [2022-04-28 12:44:36,537 INFO L290 TraceCheckUtils]: 28: Hoare triple {604#true} assume !false; {604#true} is VALID [2022-04-28 12:44:36,538 INFO L272 TraceCheckUtils]: 29: Hoare triple {604#true} call __VERIFIER_assert((if 4 * (~A~0 + ~r~0) == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,538 INFO L290 TraceCheckUtils]: 30: Hoare triple {604#true} ~cond := #in~cond; {699#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:44:36,539 INFO L290 TraceCheckUtils]: 31: Hoare triple {699#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {703#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:44:36,540 INFO L290 TraceCheckUtils]: 32: Hoare triple {703#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {703#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:44:36,541 INFO L284 TraceCheckUtils]: 33: Hoare quadruple {703#(not (= |__VERIFIER_assert_#in~cond| 0))} {604#true} #69#return; {710#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4)))} is VALID [2022-04-28 12:44:36,551 INFO L290 TraceCheckUtils]: 34: Hoare triple {710#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4)))} assume !(0 != ~r~0); {714#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} is VALID [2022-04-28 12:44:36,554 INFO L272 TraceCheckUtils]: 35: Hoare triple {714#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} call __VERIFIER_assert((if 4 * ~A~0 == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {718#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 12:44:36,554 INFO L290 TraceCheckUtils]: 36: Hoare triple {718#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {722#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:44:36,555 INFO L290 TraceCheckUtils]: 37: Hoare triple {722#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {605#false} is VALID [2022-04-28 12:44:36,555 INFO L290 TraceCheckUtils]: 38: Hoare triple {605#false} assume !false; {605#false} is VALID [2022-04-28 12:44:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-28 12:44:36,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 12:44:36,957 INFO L290 TraceCheckUtils]: 38: Hoare triple {605#false} assume !false; {605#false} is VALID [2022-04-28 12:44:36,957 INFO L290 TraceCheckUtils]: 37: Hoare triple {722#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {605#false} is VALID [2022-04-28 12:44:36,958 INFO L290 TraceCheckUtils]: 36: Hoare triple {718#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {722#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 12:44:36,958 INFO L272 TraceCheckUtils]: 35: Hoare triple {714#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} call __VERIFIER_assert((if 4 * ~A~0 == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {718#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 12:44:36,959 INFO L290 TraceCheckUtils]: 34: Hoare triple {741#(or (not (= main_~r~0 0)) (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4))))} assume !(0 != ~r~0); {714#(= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4)))} is VALID [2022-04-28 12:44:36,959 INFO L284 TraceCheckUtils]: 33: Hoare quadruple {703#(not (= |__VERIFIER_assert_#in~cond| 0))} {604#true} #69#return; {741#(or (not (= main_~r~0 0)) (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4))))} is VALID [2022-04-28 12:44:36,960 INFO L290 TraceCheckUtils]: 32: Hoare triple {703#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {703#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:44:36,960 INFO L290 TraceCheckUtils]: 31: Hoare triple {754#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {703#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 12:44:36,960 INFO L290 TraceCheckUtils]: 30: Hoare triple {604#true} ~cond := #in~cond; {754#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 12:44:36,961 INFO L272 TraceCheckUtils]: 29: Hoare triple {604#true} call __VERIFIER_assert((if 4 * (~A~0 + ~r~0) == ~u~0 * ~u~0 - ~v~0 * ~v~0 - 2 * ~u~0 + 2 * ~v~0 then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,961 INFO L290 TraceCheckUtils]: 28: Hoare triple {604#true} assume !false; {604#true} is VALID [2022-04-28 12:44:36,961 INFO L290 TraceCheckUtils]: 27: Hoare triple {604#true} ~u~0 := 1 + 2 * ~R~0;~v~0 := 1;~r~0 := ~R~0 * ~R~0 - ~A~0; {604#true} is VALID [2022-04-28 12:44:36,962 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {604#true} {604#true} #67#return; {604#true} is VALID [2022-04-28 12:44:36,963 INFO L290 TraceCheckUtils]: 25: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,963 INFO L290 TraceCheckUtils]: 24: Hoare triple {604#true} assume !(0 == ~cond); {604#true} is VALID [2022-04-28 12:44:36,963 INFO L290 TraceCheckUtils]: 23: Hoare triple {604#true} ~cond := #in~cond; {604#true} is VALID [2022-04-28 12:44:36,963 INFO L272 TraceCheckUtils]: 22: Hoare triple {604#true} call assume_abort_if_not((if 1 == (if ~A~0 < 0 && 0 != ~A~0 % 2 then ~A~0 % 2 - 2 else ~A~0 % 2) then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,963 INFO L284 TraceCheckUtils]: 21: Hoare quadruple {604#true} {604#true} #65#return; {604#true} is VALID [2022-04-28 12:44:36,963 INFO L290 TraceCheckUtils]: 20: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,963 INFO L290 TraceCheckUtils]: 19: Hoare triple {604#true} assume !(0 == ~cond); {604#true} is VALID [2022-04-28 12:44:36,963 INFO L290 TraceCheckUtils]: 18: Hoare triple {604#true} ~cond := #in~cond; {604#true} is VALID [2022-04-28 12:44:36,964 INFO L272 TraceCheckUtils]: 17: Hoare triple {604#true} call assume_abort_if_not((if (~R~0 - 1) * (~R~0 - 1) < ~A~0 then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,964 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {604#true} {604#true} #63#return; {604#true} is VALID [2022-04-28 12:44:36,964 INFO L290 TraceCheckUtils]: 15: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,964 INFO L290 TraceCheckUtils]: 14: Hoare triple {604#true} assume !(0 == ~cond); {604#true} is VALID [2022-04-28 12:44:36,964 INFO L290 TraceCheckUtils]: 13: Hoare triple {604#true} ~cond := #in~cond; {604#true} is VALID [2022-04-28 12:44:36,964 INFO L272 TraceCheckUtils]: 12: Hoare triple {604#true} call assume_abort_if_not((if ~R~0 >= 0 && ~R~0 <= 50 then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,964 INFO L290 TraceCheckUtils]: 11: Hoare triple {604#true} assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~R~0 := #t~nondet5;havoc #t~nondet5; {604#true} is VALID [2022-04-28 12:44:36,964 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {604#true} {604#true} #61#return; {604#true} is VALID [2022-04-28 12:44:36,964 INFO L290 TraceCheckUtils]: 9: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,964 INFO L290 TraceCheckUtils]: 8: Hoare triple {604#true} assume !(0 == ~cond); {604#true} is VALID [2022-04-28 12:44:36,964 INFO L290 TraceCheckUtils]: 7: Hoare triple {604#true} ~cond := #in~cond; {604#true} is VALID [2022-04-28 12:44:36,964 INFO L272 TraceCheckUtils]: 6: Hoare triple {604#true} call assume_abort_if_not((if ~A~0 >= 0 && ~A~0 <= 50 then 1 else 0)); {604#true} is VALID [2022-04-28 12:44:36,965 INFO L290 TraceCheckUtils]: 5: Hoare triple {604#true} havoc ~A~0;havoc ~R~0;havoc ~u~0;havoc ~v~0;havoc ~r~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~A~0 := #t~nondet4;havoc #t~nondet4; {604#true} is VALID [2022-04-28 12:44:36,965 INFO L272 TraceCheckUtils]: 4: Hoare triple {604#true} call #t~ret6 := main(); {604#true} is VALID [2022-04-28 12:44:36,965 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {604#true} {604#true} #73#return; {604#true} is VALID [2022-04-28 12:44:36,965 INFO L290 TraceCheckUtils]: 2: Hoare triple {604#true} assume true; {604#true} is VALID [2022-04-28 12:44:36,965 INFO L290 TraceCheckUtils]: 1: Hoare triple {604#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(13, 2);call #Ultimate.allocInit(12, 3); {604#true} is VALID [2022-04-28 12:44:36,965 INFO L272 TraceCheckUtils]: 0: Hoare triple {604#true} call ULTIMATE.init(); {604#true} is VALID [2022-04-28 12:44:36,965 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-28 12:44:36,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 12:44:36,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239903474] [2022-04-28 12:44:36,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 12:44:36,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265801768] [2022-04-28 12:44:36,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265801768] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 12:44:36,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 12:44:36,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-04-28 12:44:36,966 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 12:44:36,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [548141036] [2022-04-28 12:44:36,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [548141036] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 12:44:36,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 12:44:36,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-28 12:44:36,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72710928] [2022-04-28 12:44:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 12:44:36,967 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-04-28 12:44:36,967 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 12:44:36,967 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-28 12:44:36,988 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:44:36,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-28 12:44:36,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 12:44:36,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-28 12:44:36,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-04-28 12:44:36,989 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-28 12:44:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:44:37,243 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2022-04-28 12:44:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 12:44:37,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-04-28 12:44:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 12:44:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-28 12:44:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-28 12:44:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-28 12:44:37,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 32 transitions. [2022-04-28 12:44:37,246 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 32 transitions. [2022-04-28 12:44:37,274 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:44:37,274 INFO L225 Difference]: With dead ends: 35 [2022-04-28 12:44:37,274 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 12:44:37,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-28 12:44:37,275 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 10 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 12:44:37,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 134 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 12:44:37,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 12:44:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 12:44:37,276 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 12:44:37,276 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 12:44:37,276 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 12:44:37,276 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 12:44:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:44:37,277 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 12:44:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 12:44:37,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:44:37,277 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:44:37,277 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 12:44:37,277 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 12:44:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 12:44:37,277 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 12:44:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 12:44:37,277 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:44:37,277 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 12:44:37,277 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 12:44:37,277 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 12:44:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 12:44:37,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 12:44:37,277 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2022-04-28 12:44:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 12:44:37,278 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 12:44:37,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-04-28 12:44:37,278 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 12:44:37,278 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 12:44:37,278 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 12:44:37,278 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 12:44:37,280 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 12:44:37,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 12:44:37,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-28 12:44:37,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 12:44:37,622 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2022-04-28 12:44:37,622 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2022-04-28 12:44:37,622 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2022-04-28 12:44:37,622 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-04-28 12:44:37,622 INFO L902 garLoopResultBuilder]: At program point L9(line 9) the Hoare annotation is: true [2022-04-28 12:44:37,622 INFO L902 garLoopResultBuilder]: At program point L9-2(lines 8 10) the Hoare annotation is: true [2022-04-28 12:44:37,622 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 8 10) the Hoare annotation is: true [2022-04-28 12:44:37,622 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse0 (+ (* main_~v~0 2) (* main_~u~0 main_~u~0))) (.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* main_~u~0 2)) (.cse3 (* main_~A~0 4))) (and (= .cse0 (+ .cse1 .cse2 .cse3 (* main_~r~0 4))) (= .cse0 (+ .cse1 .cse2 .cse3)))) [2022-04-28 12:44:37,622 INFO L902 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-04-28 12:44:37,622 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point mainEXIT(lines 19 51) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point mainFINAL(lines 19 51) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-04-28 12:44:37,623 INFO L895 garLoopResultBuilder]: At program point L36-1(lines 35 46) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 19 51) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L895 garLoopResultBuilder]: At program point L39(lines 39 45) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-04-28 12:44:37,623 INFO L895 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (= (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)) (+ (* main_~v~0 main_~v~0) (* main_~u~0 2) (* main_~A~0 4) (* main_~r~0 4))) [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-28 12:44:37,623 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 12:44:37,623 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-28 12:44:37,624 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 12:44:37,624 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-28 12:44:37,624 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 12:44:37,624 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 12:44:37,624 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-04-28 12:44:37,624 INFO L895 garLoopResultBuilder]: At program point L13(lines 13 14) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 12:44:37,624 INFO L895 garLoopResultBuilder]: At program point L12(lines 12 15) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 12:44:37,624 INFO L895 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 12:44:37,624 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 11 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 12:44:37,624 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 12:44:37,626 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-04-28 12:44:37,627 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 12:44:37,629 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 12:44:37,634 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 12:44:37,647 INFO L163 areAnnotationChecker]: CFG has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 12:44:37,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 12:44:37 BoogieIcfgContainer [2022-04-28 12:44:37,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 12:44:37,655 INFO L158 Benchmark]: Toolchain (without parser) took 20403.68ms. Allocated memory was 189.8MB in the beginning and 242.2MB in the end (delta: 52.4MB). Free memory was 140.8MB in the beginning and 167.2MB in the end (delta: -26.4MB). Peak memory consumption was 26.4MB. Max. memory is 8.0GB. [2022-04-28 12:44:37,655 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 157.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 12:44:37,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.01ms. Allocated memory is still 189.8MB. Free memory was 140.7MB in the beginning and 164.8MB in the end (delta: -24.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 12:44:37,655 INFO L158 Benchmark]: Boogie Preprocessor took 33.78ms. Allocated memory is still 189.8MB. Free memory was 164.8MB in the beginning and 163.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 12:44:37,655 INFO L158 Benchmark]: RCFGBuilder took 205.57ms. Allocated memory is still 189.8MB. Free memory was 163.3MB in the beginning and 151.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 12:44:37,656 INFO L158 Benchmark]: TraceAbstraction took 19919.78ms. Allocated memory was 189.8MB in the beginning and 242.2MB in the end (delta: 52.4MB). Free memory was 151.2MB in the beginning and 167.2MB in the end (delta: -16.1MB). Peak memory consumption was 37.4MB. Max. memory is 8.0GB. [2022-04-28 12:44:37,657 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 0.12ms. Allocated memory is still 189.8MB. Free memory is still 157.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 240.01ms. Allocated memory is still 189.8MB. Free memory was 140.7MB in the beginning and 164.8MB in the end (delta: -24.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.78ms. Allocated memory is still 189.8MB. Free memory was 164.8MB in the beginning and 163.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 205.57ms. Allocated memory is still 189.8MB. Free memory was 163.3MB in the beginning and 151.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 19919.78ms. Allocated memory was 189.8MB in the beginning and 242.2MB in the end (delta: 52.4MB). Free memory was 151.2MB in the beginning and 167.2MB in the end (delta: -16.1MB). Peak memory consumption was 37.4MB. 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.9s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 261 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 181 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 97 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 80 mSDtfsCounter, 97 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 32 LocationsWithAnnotation, 80 PreInvPairs, 115 NumberOfFragments, 184 HoareAnnotationTreeSize, 80 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 32 FomulaSimplificationsInter, 276 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: v * 2 + u * u == v * v + u * 2 + A * 4 + r * 4 - ProcedureContractResult [Line: 8]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: 1 - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-28 12:44:37,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...