/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/bresenham-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 10:57:10,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 10:57:10,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 10:57:10,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 10:57:10,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 10:57:10,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 10:57:10,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 10:57:10,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 10:57:10,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 10:57:10,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 10:57:10,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 10:57:10,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 10:57:10,928 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 10:57:10,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 10:57:10,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 10:57:10,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 10:57:10,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 10:57:10,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-08 10:57:10,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 10:57:10,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 10:57:10,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 10:57:10,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-08 10:57:10,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 10:57:10,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 10:57:10,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 10:57:10,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 10:57:10,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 10:57:10,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 10:57:10,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 10:57:10,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 10:57:10,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 10:57:10,955 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 10:57:10,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 10:57:10,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 10:57:10,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 10:57:10,955 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 10:57:10,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 10:57:10,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 10:57:10,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 10:57:10,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 10:57:10,956 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 10:57:10,956 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 10:57:10,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 10:57:10,956 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-08 10:57:10,957 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 10:57:11,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 10:57:11,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 10:57:11,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 10:57:11,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 10:57:11,159 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 10:57:11,160 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-04-08 10:57:11,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca1f3102/cf42de8e9a884547b085f2d2aa9327e7/FLAG71ccac358 [2022-04-08 10:57:11,544 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 10:57:11,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound10.c [2022-04-08 10:57:11,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca1f3102/cf42de8e9a884547b085f2d2aa9327e7/FLAG71ccac358 [2022-04-08 10:57:11,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca1f3102/cf42de8e9a884547b085f2d2aa9327e7 [2022-04-08 10:57:11,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 10:57:11,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 10:57:11,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 10:57:11,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 10:57:11,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 10:57:11,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e1fb0b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11, skipping insertion in model container [2022-04-08 10:57:11,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 10:57:11,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 10:57:11,695 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/bresenham-ll_unwindbound10.c[597,610] [2022-04-08 10:57:11,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 10:57:11,715 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 10:57:11,725 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/bresenham-ll_unwindbound10.c[597,610] [2022-04-08 10:57:11,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 10:57:11,740 INFO L208 MainTranslator]: Completed translation [2022-04-08 10:57:11,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11 WrapperNode [2022-04-08 10:57:11,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 10:57:11,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 10:57:11,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 10:57:11,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 10:57:11,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 10:57:11,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 10:57:11,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 10:57:11,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 10:57:11,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11" (1/1) ... [2022-04-08 10:57:11,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 10:57:11,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:57:11,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-08 10:57:11,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-08 10:57:11,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 10:57:11,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 10:57:11,810 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 10:57:11,810 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 10:57:11,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 10:57:11,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 10:57:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 10:57:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 10:57:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 10:57:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 10:57:11,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 10:57:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 10:57:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 10:57:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 10:57:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 10:57:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 10:57:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 10:57:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 10:57:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 10:57:11,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 10:57:11,861 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 10:57:11,862 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 10:57:11,965 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 10:57:11,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 10:57:11,969 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 10:57:11,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 10:57:11 BoogieIcfgContainer [2022-04-08 10:57:11,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 10:57:11,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 10:57:11,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 10:57:11,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 10:57:11,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 10:57:11" (1/3) ... [2022-04-08 10:57:11,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489cf3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 10:57:11, skipping insertion in model container [2022-04-08 10:57:11,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 10:57:11" (2/3) ... [2022-04-08 10:57:11,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489cf3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 10:57:11, skipping insertion in model container [2022-04-08 10:57:11,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 10:57:11" (3/3) ... [2022-04-08 10:57:11,975 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound10.c [2022-04-08 10:57:11,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 10:57:11,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 10:57:12,002 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 10:57:12,006 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-08 10:57:12,006 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 10:57:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 10:57:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-08 10:57:12,035 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:57:12,035 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:57:12,036 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:57:12,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:57:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash 2019451875, now seen corresponding path program 1 times [2022-04-08 10:57:12,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:12,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [245521440] [2022-04-08 10:57:12,068 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 10:57:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash 2019451875, now seen corresponding path program 2 times [2022-04-08 10:57:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:57:12,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262219066] [2022-04-08 10:57:12,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:57:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:57:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:57:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 10:57:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:57:12,243 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {28#true} is VALID [2022-04-08 10:57:12,243 INFO L290 TraceCheckUtils]: 1: Hoare triple {28#true} assume true; {28#true} is VALID [2022-04-08 10:57:12,243 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} #62#return; {28#true} is VALID [2022-04-08 10:57:12,245 INFO L272 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {33#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 10:57:12,246 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {28#true} is VALID [2022-04-08 10:57:12,246 INFO L290 TraceCheckUtils]: 2: Hoare triple {28#true} assume true; {28#true} is VALID [2022-04-08 10:57:12,246 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} #62#return; {28#true} is VALID [2022-04-08 10:57:12,247 INFO L272 TraceCheckUtils]: 4: Hoare triple {28#true} call #t~ret9 := main(); {28#true} is VALID [2022-04-08 10:57:12,247 INFO L290 TraceCheckUtils]: 5: Hoare triple {28#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {28#true} is VALID [2022-04-08 10:57:12,249 INFO L290 TraceCheckUtils]: 6: Hoare triple {28#true} assume !true; {29#false} is VALID [2022-04-08 10:57:12,249 INFO L290 TraceCheckUtils]: 7: Hoare triple {29#false} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {29#false} is VALID [2022-04-08 10:57:12,249 INFO L272 TraceCheckUtils]: 8: Hoare triple {29#false} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {29#false} is VALID [2022-04-08 10:57:12,250 INFO L290 TraceCheckUtils]: 9: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2022-04-08 10:57:12,250 INFO L290 TraceCheckUtils]: 10: Hoare triple {29#false} assume 0 == ~cond; {29#false} is VALID [2022-04-08 10:57:12,252 INFO L290 TraceCheckUtils]: 11: Hoare triple {29#false} assume !false; {29#false} is VALID [2022-04-08 10:57:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:57:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:57:12,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262219066] [2022-04-08 10:57:12,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262219066] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:57:12,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:57:12,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 10:57:12,257 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:57:12,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [245521440] [2022-04-08 10:57:12,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [245521440] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:57:12,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:57:12,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 10:57:12,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440281223] [2022-04-08 10:57:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:57:12,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 10:57:12,262 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:57:12,264 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:12,286 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:12,287 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 10:57:12,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:12,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 10:57:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 10:57:12,309 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:12,419 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2022-04-08 10:57:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 10:57:12,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 10:57:12,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:57:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-08 10:57:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-08 10:57:12,431 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 58 transitions. [2022-04-08 10:57:12,497 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:12,502 INFO L225 Difference]: With dead ends: 45 [2022-04-08 10:57:12,502 INFO L226 Difference]: Without dead ends: 21 [2022-04-08 10:57:12,503 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 10:57:12,505 INFO L913 BasicCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:57:12,506 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:57:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-04-08 10:57:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-04-08 10:57:12,537 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:57:12,538 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:12,538 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:12,539 INFO L87 Difference]: Start difference. First operand 21 states. Second operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:12,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:12,544 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-04-08 10:57:12,544 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-04-08 10:57:12,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:12,544 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:12,545 INFO L74 IsIncluded]: Start isIncluded. First operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 21 states. [2022-04-08 10:57:12,545 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 21 states. [2022-04-08 10:57:12,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:12,546 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-04-08 10:57:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-04-08 10:57:12,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:12,547 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:12,547 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:57:12,547 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:57:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-04-08 10:57:12,549 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2022-04-08 10:57:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:57:12,549 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-04-08 10:57:12,549 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:12,550 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 20 states and 23 transitions. [2022-04-08 10:57:12,581 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:12,581 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-04-08 10:57:12,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-08 10:57:12,581 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:57:12,581 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:57:12,582 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 10:57:12,582 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:57:12,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:57:12,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1431109416, now seen corresponding path program 1 times [2022-04-08 10:57:12,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:12,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [78898790] [2022-04-08 10:57:12,583 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 10:57:12,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1431109416, now seen corresponding path program 2 times [2022-04-08 10:57:12,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:57:12,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55018494] [2022-04-08 10:57:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:57:12,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:57:12,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 10:57:12,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462089424] [2022-04-08 10:57:12,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:57:12,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:12,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:57:12,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:57:12,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 10:57:12,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 10:57:12,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:57:12,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-08 10:57:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:57:12,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:57:12,811 INFO L272 TraceCheckUtils]: 0: Hoare triple {208#true} call ULTIMATE.init(); {208#true} is VALID [2022-04-08 10:57:12,811 INFO L290 TraceCheckUtils]: 1: Hoare triple {208#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {208#true} is VALID [2022-04-08 10:57:12,811 INFO L290 TraceCheckUtils]: 2: Hoare triple {208#true} assume true; {208#true} is VALID [2022-04-08 10:57:12,813 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {208#true} {208#true} #62#return; {208#true} is VALID [2022-04-08 10:57:12,813 INFO L272 TraceCheckUtils]: 4: Hoare triple {208#true} call #t~ret9 := main(); {208#true} is VALID [2022-04-08 10:57:12,813 INFO L290 TraceCheckUtils]: 5: Hoare triple {208#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {228#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-08 10:57:12,814 INFO L290 TraceCheckUtils]: 6: Hoare triple {228#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {228#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} is VALID [2022-04-08 10:57:12,815 INFO L290 TraceCheckUtils]: 7: Hoare triple {228#(and (= main_~x~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~y~0 0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {235#(and (= main_~xy~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~yx~0 0))} is VALID [2022-04-08 10:57:12,816 INFO L272 TraceCheckUtils]: 8: Hoare triple {235#(and (= main_~xy~0 0) (= (+ (* (- 1) main_~X~0) (* main_~Y~0 2)) main_~v~0) (= main_~yx~0 0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {239#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 10:57:12,816 INFO L290 TraceCheckUtils]: 9: Hoare triple {239#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {243#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 10:57:12,816 INFO L290 TraceCheckUtils]: 10: Hoare triple {243#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {209#false} is VALID [2022-04-08 10:57:12,817 INFO L290 TraceCheckUtils]: 11: Hoare triple {209#false} assume !false; {209#false} is VALID [2022-04-08 10:57:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:57:12,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 10:57:12,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:57:12,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55018494] [2022-04-08 10:57:12,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 10:57:12,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462089424] [2022-04-08 10:57:12,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462089424] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:57:12,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:57:12,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 10:57:12,819 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:57:12,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [78898790] [2022-04-08 10:57:12,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [78898790] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:57:12,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:57:12,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 10:57:12,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555666983] [2022-04-08 10:57:12,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:57:12,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 10:57:12,821 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:57:12,822 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:12,831 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:12,832 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 10:57:12,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 10:57:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 10:57:12,833 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:13,006 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-04-08 10:57:13,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 10:57:13,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-08 10:57:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:57:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 40 transitions. [2022-04-08 10:57:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 40 transitions. [2022-04-08 10:57:13,010 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 40 transitions. [2022-04-08 10:57:13,039 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:13,041 INFO L225 Difference]: With dead ends: 34 [2022-04-08 10:57:13,041 INFO L226 Difference]: Without dead ends: 29 [2022-04-08 10:57:13,041 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 10:57:13,042 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:57:13,042 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 64 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:57:13,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-08 10:57:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-04-08 10:57:13,053 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:57:13,053 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:57:13,053 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:57:13,054 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:57:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:13,055 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-04-08 10:57:13,055 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-04-08 10:57:13,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:13,056 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:13,056 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 29 states. [2022-04-08 10:57:13,056 INFO L87 Difference]: Start difference. First operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand 29 states. [2022-04-08 10:57:13,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:13,057 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-04-08 10:57:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-04-08 10:57:13,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:13,058 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:13,058 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:57:13,058 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:57:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:57:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-04-08 10:57:13,059 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2022-04-08 10:57:13,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:57:13,060 INFO L478 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-04-08 10:57:13,060 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-08 10:57:13,060 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 31 transitions. [2022-04-08 10:57:13,084 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-04-08 10:57:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-08 10:57:13,085 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:57:13,085 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:57:13,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-08 10:57:13,295 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:13,295 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:57:13,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:57:13,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1603905768, now seen corresponding path program 1 times [2022-04-08 10:57:13,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:13,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [137710513] [2022-04-08 10:57:13,391 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:57:13,392 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:57:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1603905768, now seen corresponding path program 2 times [2022-04-08 10:57:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:57:13,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441527425] [2022-04-08 10:57:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:57:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:57:13,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 10:57:13,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873192199] [2022-04-08 10:57:13,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:57:13,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:13,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:57:13,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:57:13,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 10:57:13,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 10:57:13,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:57:13,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-08 10:57:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:57:13,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:57:13,633 INFO L272 TraceCheckUtils]: 0: Hoare triple {435#true} call ULTIMATE.init(); {435#true} is VALID [2022-04-08 10:57:13,633 INFO L290 TraceCheckUtils]: 1: Hoare triple {435#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {435#true} is VALID [2022-04-08 10:57:13,633 INFO L290 TraceCheckUtils]: 2: Hoare triple {435#true} assume true; {435#true} is VALID [2022-04-08 10:57:13,633 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {435#true} {435#true} #62#return; {435#true} is VALID [2022-04-08 10:57:13,634 INFO L272 TraceCheckUtils]: 4: Hoare triple {435#true} call #t~ret9 := main(); {435#true} is VALID [2022-04-08 10:57:13,634 INFO L290 TraceCheckUtils]: 5: Hoare triple {435#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:13,635 INFO L290 TraceCheckUtils]: 6: Hoare triple {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:13,635 INFO L290 TraceCheckUtils]: 7: Hoare triple {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:13,635 INFO L272 TraceCheckUtils]: 8: Hoare triple {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {435#true} is VALID [2022-04-08 10:57:13,635 INFO L290 TraceCheckUtils]: 9: Hoare triple {435#true} ~cond := #in~cond; {435#true} is VALID [2022-04-08 10:57:13,635 INFO L290 TraceCheckUtils]: 10: Hoare triple {435#true} assume !(0 == ~cond); {435#true} is VALID [2022-04-08 10:57:13,636 INFO L290 TraceCheckUtils]: 11: Hoare triple {435#true} assume true; {435#true} is VALID [2022-04-08 10:57:13,636 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {435#true} {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} #58#return; {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:13,637 INFO L290 TraceCheckUtils]: 13: Hoare triple {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} assume !!(~x~0 <= ~X~0); {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:13,637 INFO L290 TraceCheckUtils]: 14: Hoare triple {455#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {483#(and (= main_~x~0 0) (= main_~y~0 0) (= (+ main_~X~0 main_~v~0 (* (- 2) main_~Y~0)) (* main_~Y~0 2)))} is VALID [2022-04-08 10:57:13,638 INFO L290 TraceCheckUtils]: 15: Hoare triple {483#(and (= main_~x~0 0) (= main_~y~0 0) (= (+ main_~X~0 main_~v~0 (* (- 2) main_~Y~0)) (* main_~Y~0 2)))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {487#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 0) (= (+ main_~X~0 main_~v~0 (* (- 2) main_~Y~0)) (* main_~Y~0 2)))} is VALID [2022-04-08 10:57:13,638 INFO L290 TraceCheckUtils]: 16: Hoare triple {487#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 0) (= (+ main_~X~0 main_~v~0 (* (- 2) main_~Y~0)) (* main_~Y~0 2)))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {487#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 0) (= (+ main_~X~0 main_~v~0 (* (- 2) main_~Y~0)) (* main_~Y~0 2)))} is VALID [2022-04-08 10:57:13,640 INFO L290 TraceCheckUtils]: 17: Hoare triple {487#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 0) (= (+ main_~X~0 main_~v~0 (* (- 2) main_~Y~0)) (* main_~Y~0 2)))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {494#(and (= main_~xy~0 0) (= main_~Y~0 main_~yx~0) (= (+ main_~X~0 main_~v~0 (* (- 2) main_~Y~0)) (* main_~Y~0 2)))} is VALID [2022-04-08 10:57:13,641 INFO L272 TraceCheckUtils]: 18: Hoare triple {494#(and (= main_~xy~0 0) (= main_~Y~0 main_~yx~0) (= (+ main_~X~0 main_~v~0 (* (- 2) main_~Y~0)) (* main_~Y~0 2)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {498#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 10:57:13,641 INFO L290 TraceCheckUtils]: 19: Hoare triple {498#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {502#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 10:57:13,641 INFO L290 TraceCheckUtils]: 20: Hoare triple {502#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {436#false} is VALID [2022-04-08 10:57:13,641 INFO L290 TraceCheckUtils]: 21: Hoare triple {436#false} assume !false; {436#false} is VALID [2022-04-08 10:57:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:57:13,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:57:13,790 INFO L290 TraceCheckUtils]: 21: Hoare triple {436#false} assume !false; {436#false} is VALID [2022-04-08 10:57:13,791 INFO L290 TraceCheckUtils]: 20: Hoare triple {502#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {436#false} is VALID [2022-04-08 10:57:13,791 INFO L290 TraceCheckUtils]: 19: Hoare triple {498#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {502#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 10:57:13,792 INFO L272 TraceCheckUtils]: 18: Hoare triple {518#(= (+ (* 2 main_~xy~0) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 main_~yx~0)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {498#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 10:57:13,793 INFO L290 TraceCheckUtils]: 17: Hoare triple {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {518#(= (+ (* 2 main_~xy~0) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 main_~yx~0)))} is VALID [2022-04-08 10:57:13,793 INFO L290 TraceCheckUtils]: 16: Hoare triple {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:13,797 INFO L290 TraceCheckUtils]: 15: Hoare triple {529#(= (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:13,798 INFO L290 TraceCheckUtils]: 14: Hoare triple {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {529#(= (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-08 10:57:13,799 INFO L290 TraceCheckUtils]: 13: Hoare triple {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !!(~x~0 <= ~X~0); {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:13,800 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {435#true} {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} #58#return; {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:13,800 INFO L290 TraceCheckUtils]: 11: Hoare triple {435#true} assume true; {435#true} is VALID [2022-04-08 10:57:13,800 INFO L290 TraceCheckUtils]: 10: Hoare triple {435#true} assume !(0 == ~cond); {435#true} is VALID [2022-04-08 10:57:13,800 INFO L290 TraceCheckUtils]: 9: Hoare triple {435#true} ~cond := #in~cond; {435#true} is VALID [2022-04-08 10:57:13,800 INFO L272 TraceCheckUtils]: 8: Hoare triple {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {435#true} is VALID [2022-04-08 10:57:13,801 INFO L290 TraceCheckUtils]: 7: Hoare triple {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:13,801 INFO L290 TraceCheckUtils]: 6: Hoare triple {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:13,802 INFO L290 TraceCheckUtils]: 5: Hoare triple {435#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {522#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:13,802 INFO L272 TraceCheckUtils]: 4: Hoare triple {435#true} call #t~ret9 := main(); {435#true} is VALID [2022-04-08 10:57:13,802 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {435#true} {435#true} #62#return; {435#true} is VALID [2022-04-08 10:57:13,802 INFO L290 TraceCheckUtils]: 2: Hoare triple {435#true} assume true; {435#true} is VALID [2022-04-08 10:57:13,802 INFO L290 TraceCheckUtils]: 1: Hoare triple {435#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {435#true} is VALID [2022-04-08 10:57:13,803 INFO L272 TraceCheckUtils]: 0: Hoare triple {435#true} call ULTIMATE.init(); {435#true} is VALID [2022-04-08 10:57:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 10:57:13,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:57:13,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441527425] [2022-04-08 10:57:13,803 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 10:57:13,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873192199] [2022-04-08 10:57:13,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873192199] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:57:13,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 10:57:13,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-04-08 10:57:13,804 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:57:13,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [137710513] [2022-04-08 10:57:13,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [137710513] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:57:13,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:57:13,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 10:57:13,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44036464] [2022-04-08 10:57:13,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:57:13,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-04-08 10:57:13,805 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:57:13,805 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), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:13,823 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:13,823 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 10:57:13,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:13,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 10:57:13,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-08 10:57:13,824 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:14,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:14,099 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2022-04-08 10:57:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 10:57:14,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-04-08 10:57:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:57:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 48 transitions. [2022-04-08 10:57:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:14,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 48 transitions. [2022-04-08 10:57:14,102 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 48 transitions. [2022-04-08 10:57:14,141 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:14,142 INFO L225 Difference]: With dead ends: 44 [2022-04-08 10:57:14,142 INFO L226 Difference]: Without dead ends: 39 [2022-04-08 10:57:14,142 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-08 10:57:14,143 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 10:57:14,143 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 106 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 10:57:14,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-08 10:57:14,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2022-04-08 10:57:14,154 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:57:14,155 INFO L82 GeneralOperation]: Start isEquivalent. First operand 39 states. Second operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 10:57:14,155 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 10:57:14,155 INFO L87 Difference]: Start difference. First operand 39 states. Second operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 10:57:14,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:14,171 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-04-08 10:57:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-04-08 10:57:14,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:14,171 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:14,171 INFO L74 IsIncluded]: Start isIncluded. First operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 39 states. [2022-04-08 10:57:14,172 INFO L87 Difference]: Start difference. First operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 39 states. [2022-04-08 10:57:14,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:14,173 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-04-08 10:57:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-04-08 10:57:14,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:14,173 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:14,173 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:57:14,174 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:57:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 10:57:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-04-08 10:57:14,175 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 22 [2022-04-08 10:57:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:57:14,175 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-04-08 10:57:14,175 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:14,175 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 38 states and 42 transitions. [2022-04-08 10:57:14,203 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-04-08 10:57:14,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-04-08 10:57:14,203 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:57:14,203 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:57:14,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 10:57:14,419 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-08 10:57:14,420 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:57:14,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:57:14,420 INFO L85 PathProgramCache]: Analyzing trace with hash 794559142, now seen corresponding path program 1 times [2022-04-08 10:57:14,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:14,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [740243316] [2022-04-08 10:57:14,479 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:57:14,480 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:57:14,480 INFO L85 PathProgramCache]: Analyzing trace with hash 794559142, now seen corresponding path program 2 times [2022-04-08 10:57:14,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:57:14,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3687375] [2022-04-08 10:57:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:57:14,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:57:14,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 10:57:14,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440714873] [2022-04-08 10:57:14,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:57:14,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:14,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:57:14,490 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:57:14,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-08 10:57:14,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 10:57:14,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:57:14,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-08 10:57:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:57:14,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:57:14,689 INFO L272 TraceCheckUtils]: 0: Hoare triple {823#true} call ULTIMATE.init(); {823#true} is VALID [2022-04-08 10:57:14,689 INFO L290 TraceCheckUtils]: 1: Hoare triple {823#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {823#true} is VALID [2022-04-08 10:57:14,689 INFO L290 TraceCheckUtils]: 2: Hoare triple {823#true} assume true; {823#true} is VALID [2022-04-08 10:57:14,689 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {823#true} {823#true} #62#return; {823#true} is VALID [2022-04-08 10:57:14,690 INFO L272 TraceCheckUtils]: 4: Hoare triple {823#true} call #t~ret9 := main(); {823#true} is VALID [2022-04-08 10:57:14,690 INFO L290 TraceCheckUtils]: 5: Hoare triple {823#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:14,690 INFO L290 TraceCheckUtils]: 6: Hoare triple {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:14,691 INFO L290 TraceCheckUtils]: 7: Hoare triple {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:14,691 INFO L272 TraceCheckUtils]: 8: Hoare triple {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {823#true} is VALID [2022-04-08 10:57:14,691 INFO L290 TraceCheckUtils]: 9: Hoare triple {823#true} ~cond := #in~cond; {823#true} is VALID [2022-04-08 10:57:14,691 INFO L290 TraceCheckUtils]: 10: Hoare triple {823#true} assume !(0 == ~cond); {823#true} is VALID [2022-04-08 10:57:14,691 INFO L290 TraceCheckUtils]: 11: Hoare triple {823#true} assume true; {823#true} is VALID [2022-04-08 10:57:14,693 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {823#true} {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} #58#return; {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:14,693 INFO L290 TraceCheckUtils]: 13: Hoare triple {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} assume !!(~x~0 <= ~X~0); {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} is VALID [2022-04-08 10:57:14,694 INFO L290 TraceCheckUtils]: 14: Hoare triple {843#(and (= main_~x~0 0) (= (+ main_~X~0 main_~v~0) (* main_~Y~0 2)) (= main_~y~0 0))} assume !(~v~0 < 0);~v~0 := ~v~0 + 2 * (~Y~0 - ~X~0);#t~post7 := ~y~0;~y~0 := 1 + #t~post7;havoc #t~post7; {871#(and (= main_~x~0 0) (= (+ (- 1) main_~y~0) 0) (= main_~v~0 (+ (* main_~X~0 (- 3)) (* main_~Y~0 4))))} is VALID [2022-04-08 10:57:14,694 INFO L290 TraceCheckUtils]: 15: Hoare triple {871#(and (= main_~x~0 0) (= (+ (- 1) main_~y~0) 0) (= main_~v~0 (+ (* main_~X~0 (- 3)) (* main_~Y~0 4))))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {875#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 1) (= main_~v~0 (+ (* main_~X~0 (- 3)) (* main_~Y~0 4))))} is VALID [2022-04-08 10:57:14,695 INFO L290 TraceCheckUtils]: 16: Hoare triple {875#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 1) (= main_~v~0 (+ (* main_~X~0 (- 3)) (* main_~Y~0 4))))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {875#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 1) (= main_~v~0 (+ (* main_~X~0 (- 3)) (* main_~Y~0 4))))} is VALID [2022-04-08 10:57:14,695 INFO L290 TraceCheckUtils]: 17: Hoare triple {875#(and (= (+ (- 1) main_~y~0) 0) (= main_~x~0 1) (= main_~v~0 (+ (* main_~X~0 (- 3)) (* main_~Y~0 4))))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {882#(and (= main_~v~0 (+ (* main_~X~0 (- 3)) (* main_~Y~0 4))) (= main_~X~0 main_~xy~0) (= main_~Y~0 main_~yx~0))} is VALID [2022-04-08 10:57:14,696 INFO L272 TraceCheckUtils]: 18: Hoare triple {882#(and (= main_~v~0 (+ (* main_~X~0 (- 3)) (* main_~Y~0 4))) (= main_~X~0 main_~xy~0) (= main_~Y~0 main_~yx~0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {886#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 10:57:14,696 INFO L290 TraceCheckUtils]: 19: Hoare triple {886#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {890#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 10:57:14,697 INFO L290 TraceCheckUtils]: 20: Hoare triple {890#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {824#false} is VALID [2022-04-08 10:57:14,697 INFO L290 TraceCheckUtils]: 21: Hoare triple {824#false} assume !false; {824#false} is VALID [2022-04-08 10:57:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:57:14,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:57:14,829 INFO L290 TraceCheckUtils]: 21: Hoare triple {824#false} assume !false; {824#false} is VALID [2022-04-08 10:57:14,829 INFO L290 TraceCheckUtils]: 20: Hoare triple {890#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {824#false} is VALID [2022-04-08 10:57:14,830 INFO L290 TraceCheckUtils]: 19: Hoare triple {886#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {890#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 10:57:14,830 INFO L272 TraceCheckUtils]: 18: Hoare triple {906#(= (+ (* 2 main_~xy~0) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 main_~yx~0)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {886#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 10:57:14,831 INFO L290 TraceCheckUtils]: 17: Hoare triple {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {906#(= (+ (* 2 main_~xy~0) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 main_~yx~0)))} is VALID [2022-04-08 10:57:14,831 INFO L290 TraceCheckUtils]: 16: Hoare triple {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:14,884 INFO L290 TraceCheckUtils]: 15: Hoare triple {917#(= (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:14,886 INFO L290 TraceCheckUtils]: 14: Hoare triple {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !(~v~0 < 0);~v~0 := ~v~0 + 2 * (~Y~0 - ~X~0);#t~post7 := ~y~0;~y~0 := 1 + #t~post7;havoc #t~post7; {917#(= (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))} is VALID [2022-04-08 10:57:14,886 INFO L290 TraceCheckUtils]: 13: Hoare triple {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !!(~x~0 <= ~X~0); {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:14,887 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {823#true} {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} #58#return; {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:14,887 INFO L290 TraceCheckUtils]: 11: Hoare triple {823#true} assume true; {823#true} is VALID [2022-04-08 10:57:14,887 INFO L290 TraceCheckUtils]: 10: Hoare triple {823#true} assume !(0 == ~cond); {823#true} is VALID [2022-04-08 10:57:14,887 INFO L290 TraceCheckUtils]: 9: Hoare triple {823#true} ~cond := #in~cond; {823#true} is VALID [2022-04-08 10:57:14,887 INFO L272 TraceCheckUtils]: 8: Hoare triple {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {823#true} is VALID [2022-04-08 10:57:14,890 INFO L290 TraceCheckUtils]: 7: Hoare triple {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:14,890 INFO L290 TraceCheckUtils]: 6: Hoare triple {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:14,891 INFO L290 TraceCheckUtils]: 5: Hoare triple {823#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {910#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:14,891 INFO L272 TraceCheckUtils]: 4: Hoare triple {823#true} call #t~ret9 := main(); {823#true} is VALID [2022-04-08 10:57:14,891 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {823#true} {823#true} #62#return; {823#true} is VALID [2022-04-08 10:57:14,891 INFO L290 TraceCheckUtils]: 2: Hoare triple {823#true} assume true; {823#true} is VALID [2022-04-08 10:57:14,891 INFO L290 TraceCheckUtils]: 1: Hoare triple {823#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {823#true} is VALID [2022-04-08 10:57:14,891 INFO L272 TraceCheckUtils]: 0: Hoare triple {823#true} call ULTIMATE.init(); {823#true} is VALID [2022-04-08 10:57:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 10:57:14,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:57:14,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3687375] [2022-04-08 10:57:14,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 10:57:14,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440714873] [2022-04-08 10:57:14,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440714873] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:57:14,892 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 10:57:14,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-04-08 10:57:14,892 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:57:14,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [740243316] [2022-04-08 10:57:14,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [740243316] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:57:14,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:57:14,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 10:57:14,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235064838] [2022-04-08 10:57:14,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:57:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-04-08 10:57:14,893 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:57:14,893 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), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:14,911 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:14,912 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 10:57:14,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:14,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 10:57:14,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-08 10:57:14,912 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:15,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:15,172 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2022-04-08 10:57:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 10:57:15,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-04-08 10:57:15,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:57:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:15,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 48 transitions. [2022-04-08 10:57:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 48 transitions. [2022-04-08 10:57:15,175 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 48 transitions. [2022-04-08 10:57:15,214 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:15,215 INFO L225 Difference]: With dead ends: 53 [2022-04-08 10:57:15,215 INFO L226 Difference]: Without dead ends: 51 [2022-04-08 10:57:15,216 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-04-08 10:57:15,216 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 10:57:15,217 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 111 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 10:57:15,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-04-08 10:57:15,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-04-08 10:57:15,235 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:57:15,235 INFO L82 GeneralOperation]: Start isEquivalent. First operand 51 states. Second operand has 46 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 10:57:15,235 INFO L74 IsIncluded]: Start isIncluded. First operand 51 states. Second operand has 46 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 10:57:15,235 INFO L87 Difference]: Start difference. First operand 51 states. Second operand has 46 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 10:57:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:15,237 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-04-08 10:57:15,237 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-04-08 10:57:15,238 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:15,238 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:15,238 INFO L74 IsIncluded]: Start isIncluded. First operand has 46 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 51 states. [2022-04-08 10:57:15,238 INFO L87 Difference]: Start difference. First operand has 46 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 51 states. [2022-04-08 10:57:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:15,239 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2022-04-08 10:57:15,239 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2022-04-08 10:57:15,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:15,240 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:15,240 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:57:15,240 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:57:15,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 10:57:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2022-04-08 10:57:15,241 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 22 [2022-04-08 10:57:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:57:15,241 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2022-04-08 10:57:15,241 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:15,242 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 46 states and 51 transitions. [2022-04-08 10:57:15,284 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2022-04-08 10:57:15,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-08 10:57:15,284 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:57:15,284 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:57:15,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-08 10:57:15,491 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:15,491 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:57:15,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:57:15,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1213814707, now seen corresponding path program 1 times [2022-04-08 10:57:15,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:15,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [80929362] [2022-04-08 10:57:15,537 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:57:15,537 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:57:15,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1213814707, now seen corresponding path program 2 times [2022-04-08 10:57:15,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:57:15,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858712724] [2022-04-08 10:57:15,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:57:15,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:57:15,550 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 10:57:15,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015363172] [2022-04-08 10:57:15,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:57:15,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:15,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:57:15,551 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:57:15,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-08 10:57:15,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 10:57:15,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:57:15,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 10:57:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:57:15,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:57:15,696 INFO L272 TraceCheckUtils]: 0: Hoare triple {1269#true} call ULTIMATE.init(); {1269#true} is VALID [2022-04-08 10:57:15,697 INFO L290 TraceCheckUtils]: 1: Hoare triple {1269#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1277#(<= ~counter~0 0)} is VALID [2022-04-08 10:57:15,697 INFO L290 TraceCheckUtils]: 2: Hoare triple {1277#(<= ~counter~0 0)} assume true; {1277#(<= ~counter~0 0)} is VALID [2022-04-08 10:57:15,699 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1277#(<= ~counter~0 0)} {1269#true} #62#return; {1277#(<= ~counter~0 0)} is VALID [2022-04-08 10:57:15,699 INFO L272 TraceCheckUtils]: 4: Hoare triple {1277#(<= ~counter~0 0)} call #t~ret9 := main(); {1277#(<= ~counter~0 0)} is VALID [2022-04-08 10:57:15,707 INFO L290 TraceCheckUtils]: 5: Hoare triple {1277#(<= ~counter~0 0)} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {1277#(<= ~counter~0 0)} is VALID [2022-04-08 10:57:15,708 INFO L290 TraceCheckUtils]: 6: Hoare triple {1277#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,708 INFO L290 TraceCheckUtils]: 7: Hoare triple {1293#(<= ~counter~0 1)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,709 INFO L272 TraceCheckUtils]: 8: Hoare triple {1293#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,709 INFO L290 TraceCheckUtils]: 9: Hoare triple {1293#(<= ~counter~0 1)} ~cond := #in~cond; {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,710 INFO L290 TraceCheckUtils]: 10: Hoare triple {1293#(<= ~counter~0 1)} assume !(0 == ~cond); {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,710 INFO L290 TraceCheckUtils]: 11: Hoare triple {1293#(<= ~counter~0 1)} assume true; {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,710 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {1293#(<= ~counter~0 1)} {1293#(<= ~counter~0 1)} #58#return; {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,711 INFO L290 TraceCheckUtils]: 13: Hoare triple {1293#(<= ~counter~0 1)} assume !!(~x~0 <= ~X~0); {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,712 INFO L290 TraceCheckUtils]: 14: Hoare triple {1293#(<= ~counter~0 1)} assume !(~v~0 < 0);~v~0 := ~v~0 + 2 * (~Y~0 - ~X~0);#t~post7 := ~y~0;~y~0 := 1 + #t~post7;havoc #t~post7; {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,712 INFO L290 TraceCheckUtils]: 15: Hoare triple {1293#(<= ~counter~0 1)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {1293#(<= ~counter~0 1)} is VALID [2022-04-08 10:57:15,712 INFO L290 TraceCheckUtils]: 16: Hoare triple {1293#(<= ~counter~0 1)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1324#(<= |main_#t~post6| 1)} is VALID [2022-04-08 10:57:15,713 INFO L290 TraceCheckUtils]: 17: Hoare triple {1324#(<= |main_#t~post6| 1)} assume !(#t~post6 < 10);havoc #t~post6; {1270#false} is VALID [2022-04-08 10:57:15,713 INFO L290 TraceCheckUtils]: 18: Hoare triple {1270#false} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {1270#false} is VALID [2022-04-08 10:57:15,713 INFO L272 TraceCheckUtils]: 19: Hoare triple {1270#false} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {1270#false} is VALID [2022-04-08 10:57:15,713 INFO L290 TraceCheckUtils]: 20: Hoare triple {1270#false} ~cond := #in~cond; {1270#false} is VALID [2022-04-08 10:57:15,713 INFO L290 TraceCheckUtils]: 21: Hoare triple {1270#false} assume 0 == ~cond; {1270#false} is VALID [2022-04-08 10:57:15,713 INFO L290 TraceCheckUtils]: 22: Hoare triple {1270#false} assume !false; {1270#false} is VALID [2022-04-08 10:57:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:57:15,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:57:15,832 INFO L290 TraceCheckUtils]: 22: Hoare triple {1270#false} assume !false; {1270#false} is VALID [2022-04-08 10:57:15,832 INFO L290 TraceCheckUtils]: 21: Hoare triple {1270#false} assume 0 == ~cond; {1270#false} is VALID [2022-04-08 10:57:15,832 INFO L290 TraceCheckUtils]: 20: Hoare triple {1270#false} ~cond := #in~cond; {1270#false} is VALID [2022-04-08 10:57:15,832 INFO L272 TraceCheckUtils]: 19: Hoare triple {1270#false} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {1270#false} is VALID [2022-04-08 10:57:15,832 INFO L290 TraceCheckUtils]: 18: Hoare triple {1270#false} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {1270#false} is VALID [2022-04-08 10:57:15,832 INFO L290 TraceCheckUtils]: 17: Hoare triple {1358#(< |main_#t~post6| 10)} assume !(#t~post6 < 10);havoc #t~post6; {1270#false} is VALID [2022-04-08 10:57:15,833 INFO L290 TraceCheckUtils]: 16: Hoare triple {1362#(< ~counter~0 10)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1358#(< |main_#t~post6| 10)} is VALID [2022-04-08 10:57:15,833 INFO L290 TraceCheckUtils]: 15: Hoare triple {1362#(< ~counter~0 10)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {1362#(< ~counter~0 10)} is VALID [2022-04-08 10:57:15,833 INFO L290 TraceCheckUtils]: 14: Hoare triple {1362#(< ~counter~0 10)} assume !(~v~0 < 0);~v~0 := ~v~0 + 2 * (~Y~0 - ~X~0);#t~post7 := ~y~0;~y~0 := 1 + #t~post7;havoc #t~post7; {1362#(< ~counter~0 10)} is VALID [2022-04-08 10:57:15,834 INFO L290 TraceCheckUtils]: 13: Hoare triple {1362#(< ~counter~0 10)} assume !!(~x~0 <= ~X~0); {1362#(< ~counter~0 10)} is VALID [2022-04-08 10:57:15,834 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {1269#true} {1362#(< ~counter~0 10)} #58#return; {1362#(< ~counter~0 10)} is VALID [2022-04-08 10:57:15,834 INFO L290 TraceCheckUtils]: 11: Hoare triple {1269#true} assume true; {1269#true} is VALID [2022-04-08 10:57:15,834 INFO L290 TraceCheckUtils]: 10: Hoare triple {1269#true} assume !(0 == ~cond); {1269#true} is VALID [2022-04-08 10:57:15,834 INFO L290 TraceCheckUtils]: 9: Hoare triple {1269#true} ~cond := #in~cond; {1269#true} is VALID [2022-04-08 10:57:15,834 INFO L272 TraceCheckUtils]: 8: Hoare triple {1362#(< ~counter~0 10)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {1269#true} is VALID [2022-04-08 10:57:15,835 INFO L290 TraceCheckUtils]: 7: Hoare triple {1362#(< ~counter~0 10)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {1362#(< ~counter~0 10)} is VALID [2022-04-08 10:57:15,835 INFO L290 TraceCheckUtils]: 6: Hoare triple {1393#(< ~counter~0 9)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1362#(< ~counter~0 10)} is VALID [2022-04-08 10:57:15,835 INFO L290 TraceCheckUtils]: 5: Hoare triple {1393#(< ~counter~0 9)} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {1393#(< ~counter~0 9)} is VALID [2022-04-08 10:57:15,836 INFO L272 TraceCheckUtils]: 4: Hoare triple {1393#(< ~counter~0 9)} call #t~ret9 := main(); {1393#(< ~counter~0 9)} is VALID [2022-04-08 10:57:15,836 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1393#(< ~counter~0 9)} {1269#true} #62#return; {1393#(< ~counter~0 9)} is VALID [2022-04-08 10:57:15,836 INFO L290 TraceCheckUtils]: 2: Hoare triple {1393#(< ~counter~0 9)} assume true; {1393#(< ~counter~0 9)} is VALID [2022-04-08 10:57:15,837 INFO L290 TraceCheckUtils]: 1: Hoare triple {1269#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1393#(< ~counter~0 9)} is VALID [2022-04-08 10:57:15,837 INFO L272 TraceCheckUtils]: 0: Hoare triple {1269#true} call ULTIMATE.init(); {1269#true} is VALID [2022-04-08 10:57:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 10:57:15,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:57:15,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858712724] [2022-04-08 10:57:15,837 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 10:57:15,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015363172] [2022-04-08 10:57:15,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015363172] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:57:15,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 10:57:15,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-08 10:57:15,838 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:57:15,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [80929362] [2022-04-08 10:57:15,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [80929362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:57:15,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:57:15,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 10:57:15,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940823615] [2022-04-08 10:57:15,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:57:15,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-04-08 10:57:15,838 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:57:15,839 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:15,852 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:15,852 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 10:57:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 10:57:15,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-08 10:57:15,853 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:15,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:15,917 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2022-04-08 10:57:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 10:57:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-04-08 10:57:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:57:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 44 transitions. [2022-04-08 10:57:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 44 transitions. [2022-04-08 10:57:15,924 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 44 transitions. [2022-04-08 10:57:15,946 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:15,947 INFO L225 Difference]: With dead ends: 54 [2022-04-08 10:57:15,947 INFO L226 Difference]: Without dead ends: 46 [2022-04-08 10:57:15,948 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-08 10:57:15,951 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 10:57:15,952 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 66 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 10:57:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-08 10:57:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-04-08 10:57:15,982 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:57:15,982 INFO L82 GeneralOperation]: Start isEquivalent. First operand 46 states. Second operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 10:57:15,982 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 10:57:15,982 INFO L87 Difference]: Start difference. First operand 46 states. Second operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 10:57:15,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:15,984 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2022-04-08 10:57:15,984 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-04-08 10:57:15,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:15,984 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:15,984 INFO L74 IsIncluded]: Start isIncluded. First operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 46 states. [2022-04-08 10:57:15,984 INFO L87 Difference]: Start difference. First operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand 46 states. [2022-04-08 10:57:15,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:15,986 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2022-04-08 10:57:15,986 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-04-08 10:57:15,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:15,986 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:15,986 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:57:15,986 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:57:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 10:57:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2022-04-08 10:57:15,987 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 23 [2022-04-08 10:57:15,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:57:15,988 INFO L478 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2022-04-08 10:57:15,988 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 10:57:15,988 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 46 states and 50 transitions. [2022-04-08 10:57:16,026 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2022-04-08 10:57:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-04-08 10:57:16,027 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:57:16,027 INFO L499 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:57:16,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-08 10:57:16,239 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:16,239 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:57:16,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:57:16,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1132431350, now seen corresponding path program 1 times [2022-04-08 10:57:16,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:16,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1479503879] [2022-04-08 10:57:16,283 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:57:16,283 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:57:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1132431350, now seen corresponding path program 2 times [2022-04-08 10:57:16,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:57:16,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124799789] [2022-04-08 10:57:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:57:16,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:57:16,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 10:57:16,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817930982] [2022-04-08 10:57:16,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 10:57:16,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:16,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:57:16,292 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:57:16,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-08 10:57:16,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 10:57:16,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:57:16,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-08 10:57:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:57:16,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:57:16,721 INFO L272 TraceCheckUtils]: 0: Hoare triple {1708#true} call ULTIMATE.init(); {1708#true} is VALID [2022-04-08 10:57:16,722 INFO L290 TraceCheckUtils]: 1: Hoare triple {1708#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1708#true} is VALID [2022-04-08 10:57:16,722 INFO L290 TraceCheckUtils]: 2: Hoare triple {1708#true} assume true; {1708#true} is VALID [2022-04-08 10:57:16,722 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1708#true} {1708#true} #62#return; {1708#true} is VALID [2022-04-08 10:57:16,722 INFO L272 TraceCheckUtils]: 4: Hoare triple {1708#true} call #t~ret9 := main(); {1708#true} is VALID [2022-04-08 10:57:16,722 INFO L290 TraceCheckUtils]: 5: Hoare triple {1708#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {1728#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 10:57:16,723 INFO L290 TraceCheckUtils]: 6: Hoare triple {1728#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1728#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 10:57:16,723 INFO L290 TraceCheckUtils]: 7: Hoare triple {1728#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {1728#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 10:57:16,723 INFO L272 TraceCheckUtils]: 8: Hoare triple {1728#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {1708#true} is VALID [2022-04-08 10:57:16,723 INFO L290 TraceCheckUtils]: 9: Hoare triple {1708#true} ~cond := #in~cond; {1708#true} is VALID [2022-04-08 10:57:16,724 INFO L290 TraceCheckUtils]: 10: Hoare triple {1708#true} assume !(0 == ~cond); {1708#true} is VALID [2022-04-08 10:57:16,724 INFO L290 TraceCheckUtils]: 11: Hoare triple {1708#true} assume true; {1708#true} is VALID [2022-04-08 10:57:16,725 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {1708#true} {1728#(and (= main_~x~0 0) (= main_~y~0 0))} #58#return; {1728#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 10:57:16,725 INFO L290 TraceCheckUtils]: 13: Hoare triple {1728#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(~x~0 <= ~X~0); {1753#(and (<= main_~x~0 main_~X~0) (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 10:57:16,726 INFO L290 TraceCheckUtils]: 14: Hoare triple {1753#(and (<= main_~x~0 main_~X~0) (= main_~x~0 0) (= main_~y~0 0))} assume !(~v~0 < 0);~v~0 := ~v~0 + 2 * (~Y~0 - ~X~0);#t~post7 := ~y~0;~y~0 := 1 + #t~post7;havoc #t~post7; {1757#(and (<= main_~x~0 main_~X~0) (= main_~x~0 0) (= main_~y~0 1))} is VALID [2022-04-08 10:57:16,726 INFO L290 TraceCheckUtils]: 15: Hoare triple {1757#(and (<= main_~x~0 main_~X~0) (= main_~x~0 0) (= main_~y~0 1))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {1761#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (<= main_~x~0 (+ main_~X~0 1)))} is VALID [2022-04-08 10:57:16,726 INFO L290 TraceCheckUtils]: 16: Hoare triple {1761#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (<= main_~x~0 (+ main_~X~0 1)))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1761#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (<= main_~x~0 (+ main_~X~0 1)))} is VALID [2022-04-08 10:57:16,727 INFO L290 TraceCheckUtils]: 17: Hoare triple {1761#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (<= main_~x~0 (+ main_~X~0 1)))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {1768#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~yx~0 (* main_~Y~0 main_~x~0)) (<= main_~x~0 (+ main_~X~0 1)))} is VALID [2022-04-08 10:57:16,727 INFO L272 TraceCheckUtils]: 18: Hoare triple {1768#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~yx~0 (* main_~Y~0 main_~x~0)) (<= main_~x~0 (+ main_~X~0 1)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {1708#true} is VALID [2022-04-08 10:57:16,727 INFO L290 TraceCheckUtils]: 19: Hoare triple {1708#true} ~cond := #in~cond; {1775#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-08 10:57:16,728 INFO L290 TraceCheckUtils]: 20: Hoare triple {1775#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {1779#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 10:57:16,728 INFO L290 TraceCheckUtils]: 21: Hoare triple {1779#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {1779#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 10:57:16,729 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {1779#(not (= |__VERIFIER_assert_#in~cond| 0))} {1768#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~yx~0 (* main_~Y~0 main_~x~0)) (<= main_~x~0 (+ main_~X~0 1)))} #58#return; {1786#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (<= main_~x~0 (+ main_~X~0 1)))} is VALID [2022-04-08 10:57:16,730 INFO L290 TraceCheckUtils]: 23: Hoare triple {1786#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (<= main_~x~0 (+ main_~X~0 1)))} assume !(~x~0 <= ~X~0); {1790#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (not (<= main_~x~0 main_~X~0)) (<= main_~x~0 (+ main_~X~0 1)))} is VALID [2022-04-08 10:57:16,731 INFO L290 TraceCheckUtils]: 24: Hoare triple {1790#(and (= (+ (- 1) main_~x~0) 0) (= main_~y~0 1) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (not (<= main_~x~0 main_~X~0)) (<= main_~x~0 (+ main_~X~0 1)))} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {1794#(and (not (<= 1 main_~X~0)) (= main_~y~0 main_~xy~0) (= main_~y~0 1) (<= 0 main_~X~0) (= (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0) (* main_~Y~0 4)) (= main_~Y~0 main_~yx~0))} is VALID [2022-04-08 10:57:16,732 INFO L272 TraceCheckUtils]: 25: Hoare triple {1794#(and (not (<= 1 main_~X~0)) (= main_~y~0 main_~xy~0) (= main_~y~0 1) (<= 0 main_~X~0) (= (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0) (* main_~Y~0 4)) (= main_~Y~0 main_~yx~0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {1798#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 10:57:16,732 INFO L290 TraceCheckUtils]: 26: Hoare triple {1798#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1802#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 10:57:16,733 INFO L290 TraceCheckUtils]: 27: Hoare triple {1802#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1709#false} is VALID [2022-04-08 10:57:16,733 INFO L290 TraceCheckUtils]: 28: Hoare triple {1709#false} assume !false; {1709#false} is VALID [2022-04-08 10:57:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-08 10:57:16,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 10:57:17,354 INFO L290 TraceCheckUtils]: 28: Hoare triple {1709#false} assume !false; {1709#false} is VALID [2022-04-08 10:57:17,355 INFO L290 TraceCheckUtils]: 27: Hoare triple {1802#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1709#false} is VALID [2022-04-08 10:57:17,355 INFO L290 TraceCheckUtils]: 26: Hoare triple {1798#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1802#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 10:57:17,356 INFO L272 TraceCheckUtils]: 25: Hoare triple {1818#(= (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {1798#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 10:57:17,357 INFO L290 TraceCheckUtils]: 24: Hoare triple {1822#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {1818#(= (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0))} is VALID [2022-04-08 10:57:17,358 INFO L290 TraceCheckUtils]: 23: Hoare triple {1826#(or (<= main_~x~0 main_~X~0) (= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0)))))} assume !(~x~0 <= ~X~0); {1822#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-08 10:57:17,359 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {1779#(not (= |__VERIFIER_assert_#in~cond| 0))} {1830#(or (<= main_~x~0 main_~X~0) (= (+ (* 2 (* main_~y~0 main_~x~0)) (* (- 2) main_~xy~0) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0)))))} #58#return; {1826#(or (<= main_~x~0 main_~X~0) (= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0)))))} is VALID [2022-04-08 10:57:17,359 INFO L290 TraceCheckUtils]: 21: Hoare triple {1779#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {1779#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 10:57:17,359 INFO L290 TraceCheckUtils]: 20: Hoare triple {1840#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {1779#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 10:57:17,360 INFO L290 TraceCheckUtils]: 19: Hoare triple {1708#true} ~cond := #in~cond; {1840#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 10:57:17,360 INFO L272 TraceCheckUtils]: 18: Hoare triple {1830#(or (<= main_~x~0 main_~X~0) (= (+ (* 2 (* main_~y~0 main_~x~0)) (* (- 2) main_~xy~0) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0)))))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {1708#true} is VALID [2022-04-08 10:57:17,364 INFO L290 TraceCheckUtils]: 17: Hoare triple {1847#(or (<= main_~x~0 main_~X~0) (forall ((main_~Y~0 Int)) (= (+ (* 2 (* main_~y~0 main_~x~0)) (* main_~Y~0 2) (* (* main_~X~0 main_~y~0) (- 2)) (* 2 (* main_~Y~0 main_~x~0))) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {1830#(or (<= main_~x~0 main_~X~0) (= (+ (* 2 (* main_~y~0 main_~x~0)) (* (- 2) main_~xy~0) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0)))))} is VALID [2022-04-08 10:57:17,364 INFO L290 TraceCheckUtils]: 16: Hoare triple {1847#(or (<= main_~x~0 main_~X~0) (forall ((main_~Y~0 Int)) (= (+ (* 2 (* main_~y~0 main_~x~0)) (* main_~Y~0 2) (* (* main_~X~0 main_~y~0) (- 2)) (* 2 (* main_~Y~0 main_~x~0))) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1847#(or (<= main_~x~0 main_~X~0) (forall ((main_~Y~0 Int)) (= (+ (* 2 (* main_~y~0 main_~x~0)) (* main_~Y~0 2) (* (* main_~X~0 main_~y~0) (- 2)) (* 2 (* main_~Y~0 main_~x~0))) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))))} is VALID [2022-04-08 10:57:17,366 INFO L290 TraceCheckUtils]: 15: Hoare triple {1854#(or (<= (+ main_~x~0 1) main_~X~0) (forall ((main_~Y~0 Int)) (= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) (* main_~Y~0 2) (* (* main_~X~0 main_~y~0) (- 2)) (* 2 (* (+ main_~x~0 1) main_~Y~0))) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {1847#(or (<= main_~x~0 main_~X~0) (forall ((main_~Y~0 Int)) (= (+ (* 2 (* main_~y~0 main_~x~0)) (* main_~Y~0 2) (* (* main_~X~0 main_~y~0) (- 2)) (* 2 (* main_~Y~0 main_~x~0))) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))))} is VALID [2022-04-08 10:57:17,376 INFO L290 TraceCheckUtils]: 14: Hoare triple {1858#(or (forall ((main_~Y~0 Int)) (= (+ (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0)) (* 2 (* (+ main_~x~0 1) (+ main_~y~0 1))) (* (* main_~X~0 (+ main_~y~0 1)) (- 2))) (+ 2 (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))) (<= (+ main_~x~0 1) main_~X~0))} assume !(~v~0 < 0);~v~0 := ~v~0 + 2 * (~Y~0 - ~X~0);#t~post7 := ~y~0;~y~0 := 1 + #t~post7;havoc #t~post7; {1854#(or (<= (+ main_~x~0 1) main_~X~0) (forall ((main_~Y~0 Int)) (= (+ (* (* (+ main_~x~0 1) main_~y~0) 2) (* main_~Y~0 2) (* (* main_~X~0 main_~y~0) (- 2)) (* 2 (* (+ main_~x~0 1) main_~Y~0))) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))))} is VALID [2022-04-08 10:57:17,377 INFO L290 TraceCheckUtils]: 13: Hoare triple {1708#true} assume !!(~x~0 <= ~X~0); {1858#(or (forall ((main_~Y~0 Int)) (= (+ (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0)) (* 2 (* (+ main_~x~0 1) (+ main_~y~0 1))) (* (* main_~X~0 (+ main_~y~0 1)) (- 2))) (+ 2 (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* (+ main_~x~0 1) main_~Y~0))))) (<= (+ main_~x~0 1) main_~X~0))} is VALID [2022-04-08 10:57:17,378 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {1708#true} {1708#true} #58#return; {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L290 TraceCheckUtils]: 11: Hoare triple {1708#true} assume true; {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L290 TraceCheckUtils]: 10: Hoare triple {1708#true} assume !(0 == ~cond); {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L290 TraceCheckUtils]: 9: Hoare triple {1708#true} ~cond := #in~cond; {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L272 TraceCheckUtils]: 8: Hoare triple {1708#true} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L290 TraceCheckUtils]: 7: Hoare triple {1708#true} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L290 TraceCheckUtils]: 6: Hoare triple {1708#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L290 TraceCheckUtils]: 5: Hoare triple {1708#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L272 TraceCheckUtils]: 4: Hoare triple {1708#true} call #t~ret9 := main(); {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1708#true} {1708#true} #62#return; {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L290 TraceCheckUtils]: 2: Hoare triple {1708#true} assume true; {1708#true} is VALID [2022-04-08 10:57:17,378 INFO L290 TraceCheckUtils]: 1: Hoare triple {1708#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {1708#true} is VALID [2022-04-08 10:57:17,379 INFO L272 TraceCheckUtils]: 0: Hoare triple {1708#true} call ULTIMATE.init(); {1708#true} is VALID [2022-04-08 10:57:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-08 10:57:17,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 10:57:17,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124799789] [2022-04-08 10:57:17,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 10:57:17,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817930982] [2022-04-08 10:57:17,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817930982] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 10:57:17,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 10:57:17,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-04-08 10:57:17,379 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 10:57:17,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1479503879] [2022-04-08 10:57:17,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1479503879] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 10:57:17,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 10:57:17,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-04-08 10:57:17,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508971268] [2022-04-08 10:57:17,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 10:57:17,380 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-04-08 10:57:17,380 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 10:57:17,380 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:57:17,403 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:17,404 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-08 10:57:17,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:17,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-08 10:57:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-04-08 10:57:17,405 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:57:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:17,890 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-04-08 10:57:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-08 10:57:17,890 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2022-04-08 10:57:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 10:57:17,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:57:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 48 transitions. [2022-04-08 10:57:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:57:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 48 transitions. [2022-04-08 10:57:17,893 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 48 transitions. [2022-04-08 10:57:17,928 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:17,929 INFO L225 Difference]: With dead ends: 57 [2022-04-08 10:57:17,929 INFO L226 Difference]: Without dead ends: 49 [2022-04-08 10:57:17,930 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-04-08 10:57:17,930 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-08 10:57:17,930 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 107 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-08 10:57:17,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-08 10:57:17,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2022-04-08 10:57:17,948 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 10:57:17,948 INFO L82 GeneralOperation]: Start isEquivalent. First operand 49 states. Second operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 10:57:17,949 INFO L74 IsIncluded]: Start isIncluded. First operand 49 states. Second operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 10:57:17,949 INFO L87 Difference]: Start difference. First operand 49 states. Second operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 10:57:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:17,950 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-04-08 10:57:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-04-08 10:57:17,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:17,950 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:17,950 INFO L74 IsIncluded]: Start isIncluded. First operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 49 states. [2022-04-08 10:57:17,951 INFO L87 Difference]: Start difference. First operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 49 states. [2022-04-08 10:57:17,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 10:57:17,952 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-04-08 10:57:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-04-08 10:57:17,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 10:57:17,952 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 10:57:17,952 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 10:57:17,952 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 10:57:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 10:57:17,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-04-08 10:57:17,953 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2022-04-08 10:57:17,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 10:57:17,953 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-04-08 10:57:17,954 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 10:57:17,954 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 38 states and 42 transitions. [2022-04-08 10:57:17,988 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 10:57:17,988 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-04-08 10:57:17,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-08 10:57:17,989 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 10:57:17,989 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 10:57:18,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-08 10:57:18,195 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:18,195 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 10:57:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 10:57:18,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1603460440, now seen corresponding path program 3 times [2022-04-08 10:57:18,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 10:57:18,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1823860623] [2022-04-08 10:57:18,254 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 10:57:18,254 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 10:57:18,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1603460440, now seen corresponding path program 4 times [2022-04-08 10:57:18,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 10:57:18,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395535198] [2022-04-08 10:57:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 10:57:18,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 10:57:18,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 10:57:18,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1116334321] [2022-04-08 10:57:18,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-08 10:57:18,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 10:57:18,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 10:57:18,282 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 10:57:18,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-08 10:57:18,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-08 10:57:18,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 10:57:18,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-08 10:57:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 10:57:18,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 10:57:25,386 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-08 10:58:45,784 WARN L232 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-08 10:59:10,670 WARN L232 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-08 10:59:16,694 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 c_main_~Y~0 (+ (- 1) c_main_~x~0))) (.cse1 (* (- 2) c_main_~X~0 c_main_~y~0))) (and (or (= (mod (let ((.cse0 (* (- 2) c_main_~Y~0))) (+ .cse0 (div (+ (* (- 1) .cse1) .cse0 (* (- 1) .cse2)) (- 2)) (* c_main_~X~0 c_main_~y~0))) c_main_~Y~0) 0) (= c_main_~Y~0 0)) (= (+ (* c_main_~Y~0 4) .cse2 (* (- 1) c_main_~X~0) .cse1) c_main_~v~0))) is different from true [2022-04-08 10:59:34,661 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-08 10:59:38,709 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-08 10:59:41,500 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-08 10:59:46,367 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-08 11:00:29,154 WARN L232 SmtUtils]: Spent 19.25s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-08 11:00:39,438 INFO L272 TraceCheckUtils]: 0: Hoare triple {2201#true} call ULTIMATE.init(); {2201#true} is VALID [2022-04-08 11:00:39,438 INFO L290 TraceCheckUtils]: 1: Hoare triple {2201#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {2201#true} is VALID [2022-04-08 11:00:39,438 INFO L290 TraceCheckUtils]: 2: Hoare triple {2201#true} assume true; {2201#true} is VALID [2022-04-08 11:00:39,438 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2201#true} {2201#true} #62#return; {2201#true} is VALID [2022-04-08 11:00:39,438 INFO L272 TraceCheckUtils]: 4: Hoare triple {2201#true} call #t~ret9 := main(); {2201#true} is VALID [2022-04-08 11:00:39,438 INFO L290 TraceCheckUtils]: 5: Hoare triple {2201#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {2201#true} is VALID [2022-04-08 11:00:39,438 INFO L290 TraceCheckUtils]: 6: Hoare triple {2201#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2201#true} is VALID [2022-04-08 11:00:39,439 INFO L290 TraceCheckUtils]: 7: Hoare triple {2201#true} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2227#(and (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~yx~0 (* main_~Y~0 main_~x~0)))} is VALID [2022-04-08 11:00:39,439 INFO L272 TraceCheckUtils]: 8: Hoare triple {2227#(and (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~yx~0 (* main_~Y~0 main_~x~0)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2201#true} is VALID [2022-04-08 11:00:39,439 INFO L290 TraceCheckUtils]: 9: Hoare triple {2201#true} ~cond := #in~cond; {2234#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-08 11:00:39,439 INFO L290 TraceCheckUtils]: 10: Hoare triple {2234#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:00:39,440 INFO L290 TraceCheckUtils]: 11: Hoare triple {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:00:39,441 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} {2227#(and (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~yx~0 (* main_~Y~0 main_~x~0)))} #58#return; {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 11:00:39,441 INFO L290 TraceCheckUtils]: 13: Hoare triple {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !!(~x~0 <= ~X~0); {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 11:00:39,442 INFO L290 TraceCheckUtils]: 14: Hoare triple {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {2252#(= main_~v~0 (+ (* main_~Y~0 main_~x~0 2) (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4)))} is VALID [2022-04-08 11:00:41,444 WARN L290 TraceCheckUtils]: 15: Hoare triple {2252#(= main_~v~0 (+ (* main_~Y~0 main_~x~0 2) (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4)))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {2256#(or (and (= (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) 0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (= main_~Y~0 0)) (and (<= (+ (div (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 1) main_~x~0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (not (= main_~Y~0 0)) (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0)))} is UNKNOWN [2022-04-08 11:00:41,446 INFO L290 TraceCheckUtils]: 16: Hoare triple {2256#(or (and (= (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) 0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (= main_~Y~0 0)) (and (<= (+ (div (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 1) main_~x~0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (not (= main_~Y~0 0)) (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0)))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2256#(or (and (= (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) 0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (= main_~Y~0 0)) (and (<= (+ (div (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 1) main_~x~0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (not (= main_~Y~0 0)) (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0)))} is VALID [2022-04-08 11:00:41,447 INFO L290 TraceCheckUtils]: 17: Hoare triple {2256#(or (and (= (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) 0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (= main_~Y~0 0)) (and (<= (+ (div (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 1) main_~x~0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (not (= main_~Y~0 0)) (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0)))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2263#(and (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~yx~0 (* main_~Y~0 main_~x~0)) (or (and (= (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) 0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (= main_~Y~0 0)) (and (<= (+ (div (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 1) main_~x~0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (not (= main_~Y~0 0)) (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0))))} is VALID [2022-04-08 11:00:41,447 INFO L272 TraceCheckUtils]: 18: Hoare triple {2263#(and (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~yx~0 (* main_~Y~0 main_~x~0)) (or (and (= (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) 0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (= main_~Y~0 0)) (and (<= (+ (div (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 1) main_~x~0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (not (= main_~Y~0 0)) (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0))))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2201#true} is VALID [2022-04-08 11:00:41,447 INFO L290 TraceCheckUtils]: 19: Hoare triple {2201#true} ~cond := #in~cond; {2234#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-08 11:00:41,447 INFO L290 TraceCheckUtils]: 20: Hoare triple {2234#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:00:41,448 INFO L290 TraceCheckUtils]: 21: Hoare triple {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:00:41,449 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} {2263#(and (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~yx~0 (* main_~Y~0 main_~x~0)) (or (and (= (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) 0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (= main_~Y~0 0)) (and (<= (+ (div (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 1) main_~x~0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) main_~X~0 main_~y~0)) 2) 0) (not (= main_~Y~0 0)) (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0))))} #58#return; {2279#(and (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)))} is VALID [2022-04-08 11:00:41,450 INFO L290 TraceCheckUtils]: 23: Hoare triple {2279#(and (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)))} assume !!(~x~0 <= ~X~0); {2279#(and (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)))} is VALID [2022-04-08 11:00:43,452 WARN L290 TraceCheckUtils]: 24: Hoare triple {2279#(and (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)))} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {2286#(and (= main_~v~0 (+ (* main_~Y~0 main_~x~0 2) (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4))) (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (* main_~Y~0 main_~x~0 2) (- 1)) (* (- 1) (* (- 2) main_~X~0 main_~y~0)) (* (- 2) main_~Y~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)))} is UNKNOWN [2022-04-08 11:00:45,455 WARN L290 TraceCheckUtils]: 25: Hoare triple {2286#(and (= main_~v~0 (+ (* main_~Y~0 main_~x~0 2) (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4))) (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (* main_~Y~0 main_~x~0 2) (- 1)) (* (- 1) (* (- 2) main_~X~0 main_~y~0)) (* (- 2) main_~Y~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {2290#(and (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) (* (- 2) main_~X~0 main_~y~0)) (* (- 1) (* (+ (- 1) main_~x~0) main_~Y~0 2)) (* (- 2) main_~Y~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)) (= main_~v~0 (+ (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4) (* (+ (- 1) main_~x~0) main_~Y~0 2))))} is UNKNOWN [2022-04-08 11:00:45,456 INFO L290 TraceCheckUtils]: 26: Hoare triple {2290#(and (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) (* (- 2) main_~X~0 main_~y~0)) (* (- 1) (* (+ (- 1) main_~x~0) main_~Y~0 2)) (* (- 2) main_~Y~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)) (= main_~v~0 (+ (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4) (* (+ (- 1) main_~x~0) main_~Y~0 2))))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2290#(and (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) (* (- 2) main_~X~0 main_~y~0)) (* (- 1) (* (+ (- 1) main_~x~0) main_~Y~0 2)) (* (- 2) main_~Y~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)) (= main_~v~0 (+ (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4) (* (+ (- 1) main_~x~0) main_~Y~0 2))))} is VALID [2022-04-08 11:00:47,459 WARN L290 TraceCheckUtils]: 27: Hoare triple {2290#(and (or (= (mod (+ (* main_~X~0 main_~y~0) (div (+ (* (- 1) (* (- 2) main_~X~0 main_~y~0)) (* (- 1) (* (+ (- 1) main_~x~0) main_~Y~0 2)) (* (- 2) main_~Y~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= main_~Y~0 0)) (= main_~v~0 (+ (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4) (* (+ (- 1) main_~x~0) main_~Y~0 2))))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2297#(or (and (= main_~xy~0 0) (or (and (exists ((main_~y~0 Int)) (= (mod (+ (div (+ (* (- 1) (* (- 2) main_~X~0 main_~y~0)) (* (- 1) (* (+ (div main_~yx~0 main_~Y~0) (- 1)) main_~Y~0 2)) (* (- 2) main_~Y~0)) (- 2)) (* main_~X~0 main_~y~0) (* (- 2) main_~Y~0)) main_~Y~0) 0)) (= (+ (* (div main_~yx~0 main_~Y~0) main_~Y~0) (div (+ main_~X~0 main_~v~0) (- 2)) main_~Y~0) 0) (= (mod main_~yx~0 main_~Y~0) 0) (= (mod (+ (* (div main_~yx~0 main_~Y~0) (- 2) main_~Y~0) main_~X~0 main_~v~0) 2) 0) (not (= main_~Y~0 0))) (and (exists ((main_~x~0 Int) (main_~y~0 Int)) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))) (= main_~yx~0 0) (= main_~Y~0 0))) (= main_~X~0 0)) (and (not (= main_~X~0 0)) (or (and (= main_~Y~0 (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)))) (= main_~yx~0 0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) (div main_~xy~0 main_~X~0) main_~X~0)) 2) 0)) (and (= (mod (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (div (+ (* (- 1) (* (- 2) (div main_~xy~0 main_~X~0) main_~X~0)) (* (- 1) (* main_~Y~0 2 (+ (- 1) (div (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (* (- 1) main_~Y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2))) main_~Y~0)))) (* (- 2) main_~Y~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= (mod (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (* (- 1) main_~Y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2))) main_~Y~0) 0) (= (* main_~Y~0 (div (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (* (- 1) main_~Y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2))) main_~Y~0)) main_~yx~0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) (div main_~xy~0 main_~X~0) main_~X~0)) 2) 0) (not (= main_~Y~0 0)))) (= (mod main_~xy~0 main_~X~0) 0)))} is UNKNOWN [2022-04-08 11:00:47,468 INFO L272 TraceCheckUtils]: 28: Hoare triple {2297#(or (and (= main_~xy~0 0) (or (and (exists ((main_~y~0 Int)) (= (mod (+ (div (+ (* (- 1) (* (- 2) main_~X~0 main_~y~0)) (* (- 1) (* (+ (div main_~yx~0 main_~Y~0) (- 1)) main_~Y~0 2)) (* (- 2) main_~Y~0)) (- 2)) (* main_~X~0 main_~y~0) (* (- 2) main_~Y~0)) main_~Y~0) 0)) (= (+ (* (div main_~yx~0 main_~Y~0) main_~Y~0) (div (+ main_~X~0 main_~v~0) (- 2)) main_~Y~0) 0) (= (mod main_~yx~0 main_~Y~0) 0) (= (mod (+ (* (div main_~yx~0 main_~Y~0) (- 2) main_~Y~0) main_~X~0 main_~v~0) 2) 0) (not (= main_~Y~0 0))) (and (exists ((main_~x~0 Int) (main_~y~0 Int)) (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))) (= main_~yx~0 0) (= main_~Y~0 0))) (= main_~X~0 0)) (and (not (= main_~X~0 0)) (or (and (= main_~Y~0 (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2)))) (= main_~yx~0 0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) (div main_~xy~0 main_~X~0) main_~X~0)) 2) 0)) (and (= (mod (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (div (+ (* (- 1) (* (- 2) (div main_~xy~0 main_~X~0) main_~X~0)) (* (- 1) (* main_~Y~0 2 (+ (- 1) (div (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (* (- 1) main_~Y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2))) main_~Y~0)))) (* (- 2) main_~Y~0)) (- 2)) (* (- 2) main_~Y~0)) main_~Y~0) 0) (= (mod (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (* (- 1) main_~Y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2))) main_~Y~0) 0) (= (* main_~Y~0 (div (+ (* (div main_~xy~0 main_~X~0) main_~X~0) (* (- 1) main_~Y~0) (div (+ (* (- 1) main_~X~0) (* (- 1) main_~v~0)) (- 2))) main_~Y~0)) main_~yx~0) (= (mod (+ main_~X~0 main_~v~0 (* (- 2) (div main_~xy~0 main_~X~0) main_~X~0)) 2) 0) (not (= main_~Y~0 0)))) (= (mod main_~xy~0 main_~X~0) 0)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2301#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 11:00:47,469 INFO L290 TraceCheckUtils]: 29: Hoare triple {2301#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {2305#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 11:00:47,470 INFO L290 TraceCheckUtils]: 30: Hoare triple {2305#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {2202#false} is VALID [2022-04-08 11:00:47,470 INFO L290 TraceCheckUtils]: 31: Hoare triple {2202#false} assume !false; {2202#false} is VALID [2022-04-08 11:00:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2022-04-08 11:00:47,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 11:00:53,177 INFO L290 TraceCheckUtils]: 31: Hoare triple {2202#false} assume !false; {2202#false} is VALID [2022-04-08 11:00:53,179 INFO L290 TraceCheckUtils]: 30: Hoare triple {2305#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {2202#false} is VALID [2022-04-08 11:00:53,179 INFO L290 TraceCheckUtils]: 29: Hoare triple {2301#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {2305#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 11:00:53,180 INFO L272 TraceCheckUtils]: 28: Hoare triple {2321#(= (+ (* 2 main_~xy~0) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 main_~yx~0)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2301#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 11:00:53,183 INFO L290 TraceCheckUtils]: 27: Hoare triple {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2321#(= (+ (* 2 main_~xy~0) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 main_~yx~0)))} is VALID [2022-04-08 11:00:53,184 INFO L290 TraceCheckUtils]: 26: Hoare triple {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 11:00:53,186 INFO L290 TraceCheckUtils]: 25: Hoare triple {2252#(= main_~v~0 (+ (* main_~Y~0 main_~x~0 2) (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4)))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 11:00:53,186 INFO L290 TraceCheckUtils]: 24: Hoare triple {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {2252#(= main_~v~0 (+ (* main_~Y~0 main_~x~0 2) (* (- 1) main_~X~0) (* (- 2) main_~X~0 main_~y~0) (* main_~Y~0 4)))} is VALID [2022-04-08 11:00:53,186 INFO L290 TraceCheckUtils]: 23: Hoare triple {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} assume !!(~x~0 <= ~X~0); {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 11:00:53,187 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} {2340#(or (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (not (= (+ (* 2 main_~xy~0) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 main_~yx~0)))))} #58#return; {2245#(= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0))} is VALID [2022-04-08 11:00:53,188 INFO L290 TraceCheckUtils]: 21: Hoare triple {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:00:53,188 INFO L290 TraceCheckUtils]: 20: Hoare triple {2350#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {2238#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:00:53,188 INFO L290 TraceCheckUtils]: 19: Hoare triple {2201#true} ~cond := #in~cond; {2350#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 11:00:53,188 INFO L272 TraceCheckUtils]: 18: Hoare triple {2340#(or (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (not (= (+ (* 2 main_~xy~0) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 main_~yx~0)))))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2201#true} is VALID [2022-04-08 11:00:53,189 INFO L290 TraceCheckUtils]: 17: Hoare triple {2201#true} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2340#(or (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (not (= (+ (* 2 main_~xy~0) main_~X~0 main_~v~0) (+ (* main_~Y~0 2) (* 2 main_~yx~0)))))} is VALID [2022-04-08 11:00:53,189 INFO L290 TraceCheckUtils]: 16: Hoare triple {2201#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2201#true} is VALID [2022-04-08 11:00:53,189 INFO L290 TraceCheckUtils]: 15: Hoare triple {2201#true} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {2201#true} is VALID [2022-04-08 11:00:53,189 INFO L290 TraceCheckUtils]: 14: Hoare triple {2201#true} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {2201#true} is VALID [2022-04-08 11:00:53,189 INFO L290 TraceCheckUtils]: 13: Hoare triple {2201#true} assume !!(~x~0 <= ~X~0); {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {2201#true} {2201#true} #58#return; {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L290 TraceCheckUtils]: 11: Hoare triple {2201#true} assume true; {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L290 TraceCheckUtils]: 10: Hoare triple {2201#true} assume !(0 == ~cond); {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L290 TraceCheckUtils]: 9: Hoare triple {2201#true} ~cond := #in~cond; {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L272 TraceCheckUtils]: 8: Hoare triple {2201#true} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L290 TraceCheckUtils]: 7: Hoare triple {2201#true} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L290 TraceCheckUtils]: 6: Hoare triple {2201#true} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L290 TraceCheckUtils]: 5: Hoare triple {2201#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L272 TraceCheckUtils]: 4: Hoare triple {2201#true} call #t~ret9 := main(); {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2201#true} {2201#true} #62#return; {2201#true} is VALID [2022-04-08 11:00:53,190 INFO L290 TraceCheckUtils]: 2: Hoare triple {2201#true} assume true; {2201#true} is VALID [2022-04-08 11:00:53,191 INFO L290 TraceCheckUtils]: 1: Hoare triple {2201#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {2201#true} is VALID [2022-04-08 11:00:53,191 INFO L272 TraceCheckUtils]: 0: Hoare triple {2201#true} call ULTIMATE.init(); {2201#true} is VALID [2022-04-08 11:00:53,192 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-08 11:00:53,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:00:53,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395535198] [2022-04-08 11:00:53,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:00:53,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116334321] [2022-04-08 11:00:53,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116334321] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 11:00:53,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 11:00:53,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 18 [2022-04-08 11:00:53,193 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:00:53,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1823860623] [2022-04-08 11:00:53,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1823860623] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:00:53,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:00:53,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-08 11:00:53,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728302889] [2022-04-08 11:00:53,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:00:53,194 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 14 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-04-08 11:00:53,194 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:00:53,194 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 15 states, 12 states have (on average 1.75) internal successors, (21), 14 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:00:59,343 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 26 inductive. 0 not inductive. 3 times theorem prover too weak to decide inductivity. [2022-04-08 11:00:59,343 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-08 11:00:59,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:00:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-08 11:00:59,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=215, Unknown=14, NotChecked=30, Total=306 [2022-04-08 11:00:59,345 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 14 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:01:21,933 WARN L232 SmtUtils]: Spent 16.15s on a formula simplification. DAG size of input: 45 DAG size of output: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-08 11:01:28,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:01:30,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:01:32,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:01:34,364 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (* (- 2) c_main_~X~0 c_main_~y~0)) (.cse0 (* 2 c_main_~Y~0 c_main_~x~0)) (.cse2 (* c_main_~X~0 c_main_~y~0))) (and (= c_main_~v~0 (+ (* c_main_~Y~0 4) .cse0 (* (- 1) c_main_~X~0) .cse1)) (= c_main_~yx~0 (* c_main_~Y~0 c_main_~x~0)) (= c_main_~xy~0 .cse2) (or (= (mod (let ((.cse3 (* (- 2) c_main_~Y~0))) (+ (div (+ (* (- 1) .cse1) .cse3 (* (- 1) .cse0)) (- 2)) .cse3 .cse2)) c_main_~Y~0) 0) (= c_main_~Y~0 0)))) is different from true [2022-04-08 11:01:36,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:01:38,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:01:40,456 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 c_main_~Y~0 (+ (- 1) c_main_~x~0))) (.cse4 (= c_main_~Y~0 0)) (.cse0 (* (- 2) c_main_~Y~0)) (.cse5 (* (- 1) c_main_~X~0)) (.cse3 (* c_main_~X~0 c_main_~y~0)) (.cse1 (* (- 2) c_main_~X~0 c_main_~y~0))) (and (or (= (mod (+ .cse0 (div (+ (* (- 1) .cse1) .cse0 (* (- 1) .cse2)) (- 2)) .cse3) c_main_~Y~0) 0) .cse4) (= (+ (* c_main_~Y~0 4) .cse2 .cse5 .cse1) c_main_~v~0) (let ((.cse6 (= 0 (mod (+ .cse1 c_main_~v~0 c_main_~X~0) 2))) (.cse7 (+ .cse0 (div (+ .cse5 (* (- 1) c_main_~v~0)) (- 2)) .cse3))) (or (and .cse6 (not .cse4) (= (mod .cse7 c_main_~Y~0) 0) (<= (+ (div .cse7 c_main_~Y~0) 1) c_main_~x~0)) (and .cse6 (= .cse7 0) .cse4))))) is different from true [2022-04-08 11:01:42,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:01:44,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:03:48,543 WARN L232 SmtUtils]: Spent 1.81m on a formula simplification. DAG size of input: 106 DAG size of output: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-08 11:03:50,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:03:53,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:03:55,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:03:57,061 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse2 (* 2 c_main_~Y~0 (+ (- 1) c_main_~x~0))) (.cse4 (= c_main_~Y~0 0)) (.cse0 (* (- 2) c_main_~Y~0)) (.cse5 (* (- 1) c_main_~X~0)) (.cse1 (* (- 2) c_main_~X~0 c_main_~y~0)) (.cse3 (* c_main_~X~0 c_main_~y~0))) (and (or (= (mod (+ .cse0 (div (+ (* (- 1) .cse1) .cse0 (* (- 1) .cse2)) (- 2)) .cse3) c_main_~Y~0) 0) .cse4) (= (+ (* c_main_~Y~0 4) .cse2 .cse5 .cse1) c_main_~v~0) (let ((.cse6 (= 0 (mod (+ .cse1 c_main_~v~0 c_main_~X~0) 2))) (.cse7 (+ .cse0 (div (+ .cse5 (* (- 1) c_main_~v~0)) (- 2)) .cse3))) (or (and .cse6 (not .cse4) (= (mod .cse7 c_main_~Y~0) 0) (<= (+ (div .cse7 c_main_~Y~0) 1) c_main_~x~0)) (and .cse6 (= .cse7 0) .cse4))) (= (+ (* 2 (* c_main_~Y~0 c_main_~x~0)) (* 2 c_main_~Y~0)) (+ (* 2 .cse3) c_main_~v~0 c_main_~X~0)))) is different from true [2022-04-08 11:04:01,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:04:03,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:04:05,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:04:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:04:06,223 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-04-08 11:04:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-08 11:04:06,223 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 14 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-04-08 11:04:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:04:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 14 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:04:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 43 transitions. [2022-04-08 11:04:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.75) internal successors, (21), 14 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:04:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 43 transitions. [2022-04-08 11:04:06,230 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 14 states and 43 transitions. [2022-04-08 11:04:16,591 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 39 inductive. 0 not inductive. 4 times theorem prover too weak to decide inductivity. [2022-04-08 11:04:16,592 INFO L225 Difference]: With dead ends: 60 [2022-04-08 11:04:16,592 INFO L226 Difference]: Without dead ends: 56 [2022-04-08 11:04:16,592 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 217.6s TimeCoverageRelationStatistics Valid=86, Invalid=326, Unknown=24, NotChecked=164, Total=600 [2022-04-08 11:04:16,593 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 11 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2022-04-08 11:04:16,593 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 108 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 137 Invalid, 11 Unknown, 90 Unchecked, 25.8s Time] [2022-04-08 11:04:16,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-04-08 11:04:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 40. [2022-04-08 11:04:16,620 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:04:16,620 INFO L82 GeneralOperation]: Start isEquivalent. First operand 56 states. Second operand has 40 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:04:16,621 INFO L74 IsIncluded]: Start isIncluded. First operand 56 states. Second operand has 40 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:04:16,621 INFO L87 Difference]: Start difference. First operand 56 states. Second operand has 40 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:04:16,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:04:16,622 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-04-08 11:04:16,623 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-04-08 11:04:16,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:04:16,623 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:04:16,623 INFO L74 IsIncluded]: Start isIncluded. First operand has 40 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 56 states. [2022-04-08 11:04:16,623 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 56 states. [2022-04-08 11:04:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:04:16,625 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-04-08 11:04:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-04-08 11:04:16,625 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:04:16,625 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:04:16,625 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:04:16,625 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:04:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:04:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2022-04-08 11:04:16,626 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 32 [2022-04-08 11:04:16,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:04:16,626 INFO L478 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2022-04-08 11:04:16,626 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.75) internal successors, (21), 14 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:04:16,626 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 40 states and 43 transitions. [2022-04-08 11:04:18,821 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 42 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-08 11:04:18,822 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2022-04-08 11:04:18,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-08 11:04:18,822 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:04:18,822 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 11:04:18,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-08 11:04:19,022 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:04:19,023 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:04:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:04:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1756989579, now seen corresponding path program 1 times [2022-04-08 11:04:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:04:19,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2056321641] [2022-04-08 11:04:19,069 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 11:04:19,069 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 11:04:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1756989579, now seen corresponding path program 2 times [2022-04-08 11:04:19,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:04:19,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655120772] [2022-04-08 11:04:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:04:19,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:04:19,087 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:04:19,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925022761] [2022-04-08 11:04:19,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:04:19,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:04:19,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:04:19,101 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:04:19,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-08 11:04:19,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 11:04:19,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:04:19,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-08 11:04:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:04:19,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:04:19,283 INFO L272 TraceCheckUtils]: 0: Hoare triple {2738#true} call ULTIMATE.init(); {2738#true} is VALID [2022-04-08 11:04:19,284 INFO L290 TraceCheckUtils]: 1: Hoare triple {2738#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {2746#(<= ~counter~0 0)} is VALID [2022-04-08 11:04:19,284 INFO L290 TraceCheckUtils]: 2: Hoare triple {2746#(<= ~counter~0 0)} assume true; {2746#(<= ~counter~0 0)} is VALID [2022-04-08 11:04:19,285 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2746#(<= ~counter~0 0)} {2738#true} #62#return; {2746#(<= ~counter~0 0)} is VALID [2022-04-08 11:04:19,285 INFO L272 TraceCheckUtils]: 4: Hoare triple {2746#(<= ~counter~0 0)} call #t~ret9 := main(); {2746#(<= ~counter~0 0)} is VALID [2022-04-08 11:04:19,285 INFO L290 TraceCheckUtils]: 5: Hoare triple {2746#(<= ~counter~0 0)} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {2746#(<= ~counter~0 0)} is VALID [2022-04-08 11:04:19,286 INFO L290 TraceCheckUtils]: 6: Hoare triple {2746#(<= ~counter~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,286 INFO L290 TraceCheckUtils]: 7: Hoare triple {2762#(<= ~counter~0 1)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,287 INFO L272 TraceCheckUtils]: 8: Hoare triple {2762#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,291 INFO L290 TraceCheckUtils]: 9: Hoare triple {2762#(<= ~counter~0 1)} ~cond := #in~cond; {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,292 INFO L290 TraceCheckUtils]: 10: Hoare triple {2762#(<= ~counter~0 1)} assume !(0 == ~cond); {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,292 INFO L290 TraceCheckUtils]: 11: Hoare triple {2762#(<= ~counter~0 1)} assume true; {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,292 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {2762#(<= ~counter~0 1)} {2762#(<= ~counter~0 1)} #58#return; {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,293 INFO L290 TraceCheckUtils]: 13: Hoare triple {2762#(<= ~counter~0 1)} assume !!(~x~0 <= ~X~0); {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,293 INFO L290 TraceCheckUtils]: 14: Hoare triple {2762#(<= ~counter~0 1)} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,293 INFO L290 TraceCheckUtils]: 15: Hoare triple {2762#(<= ~counter~0 1)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {2762#(<= ~counter~0 1)} is VALID [2022-04-08 11:04:19,294 INFO L290 TraceCheckUtils]: 16: Hoare triple {2762#(<= ~counter~0 1)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,294 INFO L290 TraceCheckUtils]: 17: Hoare triple {2793#(<= ~counter~0 2)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,294 INFO L272 TraceCheckUtils]: 18: Hoare triple {2793#(<= ~counter~0 2)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,295 INFO L290 TraceCheckUtils]: 19: Hoare triple {2793#(<= ~counter~0 2)} ~cond := #in~cond; {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,295 INFO L290 TraceCheckUtils]: 20: Hoare triple {2793#(<= ~counter~0 2)} assume !(0 == ~cond); {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,295 INFO L290 TraceCheckUtils]: 21: Hoare triple {2793#(<= ~counter~0 2)} assume true; {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,297 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {2793#(<= ~counter~0 2)} {2793#(<= ~counter~0 2)} #58#return; {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,297 INFO L290 TraceCheckUtils]: 23: Hoare triple {2793#(<= ~counter~0 2)} assume !!(~x~0 <= ~X~0); {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,297 INFO L290 TraceCheckUtils]: 24: Hoare triple {2793#(<= ~counter~0 2)} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,297 INFO L290 TraceCheckUtils]: 25: Hoare triple {2793#(<= ~counter~0 2)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {2793#(<= ~counter~0 2)} is VALID [2022-04-08 11:04:19,298 INFO L290 TraceCheckUtils]: 26: Hoare triple {2793#(<= ~counter~0 2)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2824#(<= |main_#t~post6| 2)} is VALID [2022-04-08 11:04:19,298 INFO L290 TraceCheckUtils]: 27: Hoare triple {2824#(<= |main_#t~post6| 2)} assume !(#t~post6 < 10);havoc #t~post6; {2739#false} is VALID [2022-04-08 11:04:19,298 INFO L290 TraceCheckUtils]: 28: Hoare triple {2739#false} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {2739#false} is VALID [2022-04-08 11:04:19,298 INFO L272 TraceCheckUtils]: 29: Hoare triple {2739#false} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {2739#false} is VALID [2022-04-08 11:04:19,298 INFO L290 TraceCheckUtils]: 30: Hoare triple {2739#false} ~cond := #in~cond; {2739#false} is VALID [2022-04-08 11:04:19,298 INFO L290 TraceCheckUtils]: 31: Hoare triple {2739#false} assume 0 == ~cond; {2739#false} is VALID [2022-04-08 11:04:19,298 INFO L290 TraceCheckUtils]: 32: Hoare triple {2739#false} assume !false; {2739#false} is VALID [2022-04-08 11:04:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 11:04:19,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 11:04:19,461 INFO L290 TraceCheckUtils]: 32: Hoare triple {2739#false} assume !false; {2739#false} is VALID [2022-04-08 11:04:19,461 INFO L290 TraceCheckUtils]: 31: Hoare triple {2739#false} assume 0 == ~cond; {2739#false} is VALID [2022-04-08 11:04:19,461 INFO L290 TraceCheckUtils]: 30: Hoare triple {2739#false} ~cond := #in~cond; {2739#false} is VALID [2022-04-08 11:04:19,461 INFO L272 TraceCheckUtils]: 29: Hoare triple {2739#false} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {2739#false} is VALID [2022-04-08 11:04:19,461 INFO L290 TraceCheckUtils]: 28: Hoare triple {2739#false} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {2739#false} is VALID [2022-04-08 11:04:19,462 INFO L290 TraceCheckUtils]: 27: Hoare triple {2858#(< |main_#t~post6| 10)} assume !(#t~post6 < 10);havoc #t~post6; {2739#false} is VALID [2022-04-08 11:04:19,462 INFO L290 TraceCheckUtils]: 26: Hoare triple {2862#(< ~counter~0 10)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2858#(< |main_#t~post6| 10)} is VALID [2022-04-08 11:04:19,462 INFO L290 TraceCheckUtils]: 25: Hoare triple {2862#(< ~counter~0 10)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {2862#(< ~counter~0 10)} is VALID [2022-04-08 11:04:19,462 INFO L290 TraceCheckUtils]: 24: Hoare triple {2862#(< ~counter~0 10)} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {2862#(< ~counter~0 10)} is VALID [2022-04-08 11:04:19,463 INFO L290 TraceCheckUtils]: 23: Hoare triple {2862#(< ~counter~0 10)} assume !!(~x~0 <= ~X~0); {2862#(< ~counter~0 10)} is VALID [2022-04-08 11:04:19,463 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {2738#true} {2862#(< ~counter~0 10)} #58#return; {2862#(< ~counter~0 10)} is VALID [2022-04-08 11:04:19,464 INFO L290 TraceCheckUtils]: 21: Hoare triple {2738#true} assume true; {2738#true} is VALID [2022-04-08 11:04:19,464 INFO L290 TraceCheckUtils]: 20: Hoare triple {2738#true} assume !(0 == ~cond); {2738#true} is VALID [2022-04-08 11:04:19,464 INFO L290 TraceCheckUtils]: 19: Hoare triple {2738#true} ~cond := #in~cond; {2738#true} is VALID [2022-04-08 11:04:19,464 INFO L272 TraceCheckUtils]: 18: Hoare triple {2862#(< ~counter~0 10)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2738#true} is VALID [2022-04-08 11:04:19,464 INFO L290 TraceCheckUtils]: 17: Hoare triple {2862#(< ~counter~0 10)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2862#(< ~counter~0 10)} is VALID [2022-04-08 11:04:19,465 INFO L290 TraceCheckUtils]: 16: Hoare triple {2893#(< ~counter~0 9)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2862#(< ~counter~0 10)} is VALID [2022-04-08 11:04:19,465 INFO L290 TraceCheckUtils]: 15: Hoare triple {2893#(< ~counter~0 9)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {2893#(< ~counter~0 9)} is VALID [2022-04-08 11:04:19,465 INFO L290 TraceCheckUtils]: 14: Hoare triple {2893#(< ~counter~0 9)} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {2893#(< ~counter~0 9)} is VALID [2022-04-08 11:04:19,466 INFO L290 TraceCheckUtils]: 13: Hoare triple {2893#(< ~counter~0 9)} assume !!(~x~0 <= ~X~0); {2893#(< ~counter~0 9)} is VALID [2022-04-08 11:04:19,466 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {2738#true} {2893#(< ~counter~0 9)} #58#return; {2893#(< ~counter~0 9)} is VALID [2022-04-08 11:04:19,466 INFO L290 TraceCheckUtils]: 11: Hoare triple {2738#true} assume true; {2738#true} is VALID [2022-04-08 11:04:19,466 INFO L290 TraceCheckUtils]: 10: Hoare triple {2738#true} assume !(0 == ~cond); {2738#true} is VALID [2022-04-08 11:04:19,467 INFO L290 TraceCheckUtils]: 9: Hoare triple {2738#true} ~cond := #in~cond; {2738#true} is VALID [2022-04-08 11:04:19,467 INFO L272 TraceCheckUtils]: 8: Hoare triple {2893#(< ~counter~0 9)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {2738#true} is VALID [2022-04-08 11:04:19,467 INFO L290 TraceCheckUtils]: 7: Hoare triple {2893#(< ~counter~0 9)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {2893#(< ~counter~0 9)} is VALID [2022-04-08 11:04:19,467 INFO L290 TraceCheckUtils]: 6: Hoare triple {2924#(< ~counter~0 8)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {2893#(< ~counter~0 9)} is VALID [2022-04-08 11:04:19,468 INFO L290 TraceCheckUtils]: 5: Hoare triple {2924#(< ~counter~0 8)} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {2924#(< ~counter~0 8)} is VALID [2022-04-08 11:04:19,468 INFO L272 TraceCheckUtils]: 4: Hoare triple {2924#(< ~counter~0 8)} call #t~ret9 := main(); {2924#(< ~counter~0 8)} is VALID [2022-04-08 11:04:19,468 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2924#(< ~counter~0 8)} {2738#true} #62#return; {2924#(< ~counter~0 8)} is VALID [2022-04-08 11:04:19,468 INFO L290 TraceCheckUtils]: 2: Hoare triple {2924#(< ~counter~0 8)} assume true; {2924#(< ~counter~0 8)} is VALID [2022-04-08 11:04:19,469 INFO L290 TraceCheckUtils]: 1: Hoare triple {2738#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {2924#(< ~counter~0 8)} is VALID [2022-04-08 11:04:19,469 INFO L272 TraceCheckUtils]: 0: Hoare triple {2738#true} call ULTIMATE.init(); {2738#true} is VALID [2022-04-08 11:04:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-08 11:04:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:04:19,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655120772] [2022-04-08 11:04:19,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:04:19,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925022761] [2022-04-08 11:04:19,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925022761] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 11:04:19,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 11:04:19,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-04-08 11:04:19,470 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:04:19,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2056321641] [2022-04-08 11:04:19,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2056321641] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:04:19,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:04:19,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 11:04:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502051739] [2022-04-08 11:04:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:04:19,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2022-04-08 11:04:19,470 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:04:19,470 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:04:19,491 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:04:19,491 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 11:04:19,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:04:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 11:04:19,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-08 11:04:19,492 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:04:19,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:04:19,619 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2022-04-08 11:04:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 11:04:19,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2022-04-08 11:04:19,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:04:19,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:04:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 53 transitions. [2022-04-08 11:04:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:04:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 53 transitions. [2022-04-08 11:04:19,622 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 53 transitions. [2022-04-08 11:04:19,655 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:04:19,656 INFO L225 Difference]: With dead ends: 50 [2022-04-08 11:04:19,656 INFO L226 Difference]: Without dead ends: 44 [2022-04-08 11:04:19,656 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2022-04-08 11:04:19,657 INFO L913 BasicCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 11:04:19,657 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 91 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 11:04:19,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-04-08 11:04:19,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-04-08 11:04:19,688 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:04:19,688 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states. Second operand has 44 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:04:19,688 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand has 44 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:04:19,688 INFO L87 Difference]: Start difference. First operand 44 states. Second operand has 44 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:04:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:04:19,689 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-04-08 11:04:19,689 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-04-08 11:04:19,690 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:04:19,690 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:04:19,690 INFO L74 IsIncluded]: Start isIncluded. First operand has 44 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 44 states. [2022-04-08 11:04:19,690 INFO L87 Difference]: Start difference. First operand has 44 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 44 states. [2022-04-08 11:04:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:04:19,691 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-04-08 11:04:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-04-08 11:04:19,691 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:04:19,691 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:04:19,691 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:04:19,691 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:04:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:04:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-04-08 11:04:19,692 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 33 [2022-04-08 11:04:19,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:04:19,692 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-04-08 11:04:19,692 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:04:19,692 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 44 states and 48 transitions. [2022-04-08 11:04:23,904 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 46 inductive. 0 not inductive. 2 times theorem prover too weak to decide inductivity. [2022-04-08 11:04:23,904 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-04-08 11:04:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-08 11:04:23,904 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:04:23,904 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 11:04:23,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-08 11:04:24,105 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:04:24,105 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:04:24,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:04:24,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1565736524, now seen corresponding path program 1 times [2022-04-08 11:04:24,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:04:24,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1224623942] [2022-04-08 11:04:24,158 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 11:04:24,158 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 11:04:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1565736524, now seen corresponding path program 2 times [2022-04-08 11:04:24,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:04:24,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732499832] [2022-04-08 11:04:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:04:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:04:24,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:04:24,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [813377236] [2022-04-08 11:04:24,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:04:24,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:04:24,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:04:24,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:04:24,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-08 11:04:24,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 11:04:24,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:04:24,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-08 11:04:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:04:24,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:04:39,837 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-08 11:04:45,976 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-08 11:05:28,660 INFO L272 TraceCheckUtils]: 0: Hoare triple {3225#true} call ULTIMATE.init(); {3225#true} is VALID [2022-04-08 11:05:28,661 INFO L290 TraceCheckUtils]: 1: Hoare triple {3225#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {3225#true} is VALID [2022-04-08 11:05:28,661 INFO L290 TraceCheckUtils]: 2: Hoare triple {3225#true} assume true; {3225#true} is VALID [2022-04-08 11:05:28,661 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3225#true} {3225#true} #62#return; {3225#true} is VALID [2022-04-08 11:05:28,661 INFO L272 TraceCheckUtils]: 4: Hoare triple {3225#true} call #t~ret9 := main(); {3225#true} is VALID [2022-04-08 11:05:28,661 INFO L290 TraceCheckUtils]: 5: Hoare triple {3225#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,661 INFO L290 TraceCheckUtils]: 6: Hoare triple {3245#(= main_~y~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,662 INFO L290 TraceCheckUtils]: 7: Hoare triple {3245#(= main_~y~0 0)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,662 INFO L272 TraceCheckUtils]: 8: Hoare triple {3245#(= main_~y~0 0)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3225#true} is VALID [2022-04-08 11:05:28,662 INFO L290 TraceCheckUtils]: 9: Hoare triple {3225#true} ~cond := #in~cond; {3225#true} is VALID [2022-04-08 11:05:28,662 INFO L290 TraceCheckUtils]: 10: Hoare triple {3225#true} assume !(0 == ~cond); {3225#true} is VALID [2022-04-08 11:05:28,662 INFO L290 TraceCheckUtils]: 11: Hoare triple {3225#true} assume true; {3225#true} is VALID [2022-04-08 11:05:28,662 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {3225#true} {3245#(= main_~y~0 0)} #58#return; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,663 INFO L290 TraceCheckUtils]: 13: Hoare triple {3245#(= main_~y~0 0)} assume !!(~x~0 <= ~X~0); {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,663 INFO L290 TraceCheckUtils]: 14: Hoare triple {3245#(= main_~y~0 0)} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,663 INFO L290 TraceCheckUtils]: 15: Hoare triple {3245#(= main_~y~0 0)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,664 INFO L290 TraceCheckUtils]: 16: Hoare triple {3245#(= main_~y~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,664 INFO L290 TraceCheckUtils]: 17: Hoare triple {3245#(= main_~y~0 0)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,664 INFO L272 TraceCheckUtils]: 18: Hoare triple {3245#(= main_~y~0 0)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3225#true} is VALID [2022-04-08 11:05:28,664 INFO L290 TraceCheckUtils]: 19: Hoare triple {3225#true} ~cond := #in~cond; {3225#true} is VALID [2022-04-08 11:05:28,664 INFO L290 TraceCheckUtils]: 20: Hoare triple {3225#true} assume !(0 == ~cond); {3225#true} is VALID [2022-04-08 11:05:28,664 INFO L290 TraceCheckUtils]: 21: Hoare triple {3225#true} assume true; {3225#true} is VALID [2022-04-08 11:05:28,665 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {3225#true} {3245#(= main_~y~0 0)} #58#return; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,665 INFO L290 TraceCheckUtils]: 23: Hoare triple {3245#(= main_~y~0 0)} assume !!(~x~0 <= ~X~0); {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,665 INFO L290 TraceCheckUtils]: 24: Hoare triple {3245#(= main_~y~0 0)} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,666 INFO L290 TraceCheckUtils]: 25: Hoare triple {3245#(= main_~y~0 0)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,666 INFO L290 TraceCheckUtils]: 26: Hoare triple {3245#(= main_~y~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:28,666 INFO L290 TraceCheckUtils]: 27: Hoare triple {3245#(= main_~y~0 0)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3312#(and (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~y~0 0) (= main_~yx~0 (* main_~Y~0 main_~x~0)))} is VALID [2022-04-08 11:05:28,666 INFO L272 TraceCheckUtils]: 28: Hoare triple {3312#(and (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~y~0 0) (= main_~yx~0 (* main_~Y~0 main_~x~0)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3225#true} is VALID [2022-04-08 11:05:28,667 INFO L290 TraceCheckUtils]: 29: Hoare triple {3225#true} ~cond := #in~cond; {3319#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-08 11:05:28,667 INFO L290 TraceCheckUtils]: 30: Hoare triple {3319#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {3323#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:05:28,667 INFO L290 TraceCheckUtils]: 31: Hoare triple {3323#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {3323#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:05:28,668 INFO L284 TraceCheckUtils]: 32: Hoare quadruple {3323#(not (= |__VERIFIER_assert_#in~cond| 0))} {3312#(and (= (* main_~X~0 main_~y~0) main_~xy~0) (= main_~y~0 0) (= main_~yx~0 (* main_~Y~0 main_~x~0)))} #58#return; {3330#(and (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (= main_~y~0 0))} is VALID [2022-04-08 11:05:28,669 INFO L290 TraceCheckUtils]: 33: Hoare triple {3330#(and (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (= main_~y~0 0))} assume !(~x~0 <= ~X~0); {3330#(and (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (= main_~y~0 0))} is VALID [2022-04-08 11:05:30,672 WARN L290 TraceCheckUtils]: 34: Hoare triple {3330#(and (= (+ (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (= main_~y~0 0))} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {3337#(and (= main_~y~0 0) (or (and (= (mod (+ (* main_~X~0 main_~y~0 2) main_~X~0 main_~v~0) 2) 0) (= main_~xy~0 0) (= main_~yx~0 0) (= 0 (+ (* main_~X~0 main_~y~0) (div (+ main_~X~0 main_~v~0) 2) (* (- 1) main_~Y~0)))) (and (= (* main_~y~0 (div (+ (* main_~X~0 main_~y~0) (div (+ main_~X~0 main_~v~0) 2) (* (- 1) main_~Y~0)) main_~Y~0)) main_~xy~0) (= (mod (+ (* main_~X~0 main_~y~0) (div (+ main_~X~0 main_~v~0) 2) (* (- 1) main_~Y~0)) main_~Y~0) 0) (= (mod (+ (* main_~X~0 main_~y~0 2) main_~X~0 main_~v~0) 2) 0) (not (= main_~Y~0 0)) (= main_~yx~0 (* main_~Y~0 (div (+ (* main_~X~0 main_~y~0) (div (+ main_~X~0 main_~v~0) 2) (* (- 1) main_~Y~0)) main_~Y~0))))))} is UNKNOWN [2022-04-08 11:05:30,673 INFO L272 TraceCheckUtils]: 35: Hoare triple {3337#(and (= main_~y~0 0) (or (and (= (mod (+ (* main_~X~0 main_~y~0 2) main_~X~0 main_~v~0) 2) 0) (= main_~xy~0 0) (= main_~yx~0 0) (= 0 (+ (* main_~X~0 main_~y~0) (div (+ main_~X~0 main_~v~0) 2) (* (- 1) main_~Y~0)))) (and (= (* main_~y~0 (div (+ (* main_~X~0 main_~y~0) (div (+ main_~X~0 main_~v~0) 2) (* (- 1) main_~Y~0)) main_~Y~0)) main_~xy~0) (= (mod (+ (* main_~X~0 main_~y~0) (div (+ main_~X~0 main_~v~0) 2) (* (- 1) main_~Y~0)) main_~Y~0) 0) (= (mod (+ (* main_~X~0 main_~y~0 2) main_~X~0 main_~v~0) 2) 0) (not (= main_~Y~0 0)) (= main_~yx~0 (* main_~Y~0 (div (+ (* main_~X~0 main_~y~0) (div (+ main_~X~0 main_~v~0) 2) (* (- 1) main_~Y~0)) main_~Y~0))))))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {3341#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 11:05:30,674 INFO L290 TraceCheckUtils]: 36: Hoare triple {3341#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {3345#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 11:05:30,674 INFO L290 TraceCheckUtils]: 37: Hoare triple {3345#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {3226#false} is VALID [2022-04-08 11:05:30,674 INFO L290 TraceCheckUtils]: 38: Hoare triple {3226#false} assume !false; {3226#false} is VALID [2022-04-08 11:05:30,674 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-08 11:05:30,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 11:05:34,456 INFO L290 TraceCheckUtils]: 38: Hoare triple {3226#false} assume !false; {3226#false} is VALID [2022-04-08 11:05:34,457 INFO L290 TraceCheckUtils]: 37: Hoare triple {3345#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {3226#false} is VALID [2022-04-08 11:05:34,457 INFO L290 TraceCheckUtils]: 36: Hoare triple {3341#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {3345#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 11:05:34,458 INFO L272 TraceCheckUtils]: 35: Hoare triple {3361#(= (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {3341#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 11:05:34,459 INFO L290 TraceCheckUtils]: 34: Hoare triple {3365#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {3361#(= (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0))} is VALID [2022-04-08 11:05:34,459 INFO L290 TraceCheckUtils]: 33: Hoare triple {3365#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} assume !(~x~0 <= ~X~0); {3365#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-08 11:05:34,460 INFO L284 TraceCheckUtils]: 32: Hoare quadruple {3323#(not (= |__VERIFIER_assert_#in~cond| 0))} {3372#(= (+ (* 2 (* main_~y~0 main_~x~0)) (* (- 2) main_~xy~0) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} #58#return; {3365#(= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-08 11:05:34,460 INFO L290 TraceCheckUtils]: 31: Hoare triple {3323#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {3323#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:05:34,461 INFO L290 TraceCheckUtils]: 30: Hoare triple {3382#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {3323#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 11:05:34,461 INFO L290 TraceCheckUtils]: 29: Hoare triple {3225#true} ~cond := #in~cond; {3382#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 11:05:34,461 INFO L272 TraceCheckUtils]: 28: Hoare triple {3372#(= (+ (* 2 (* main_~y~0 main_~x~0)) (* (- 2) main_~xy~0) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3225#true} is VALID [2022-04-08 11:05:34,461 INFO L290 TraceCheckUtils]: 27: Hoare triple {3245#(= main_~y~0 0)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3372#(= (+ (* 2 (* main_~y~0 main_~x~0)) (* (- 2) main_~xy~0) (* main_~Y~0 2) (* 2 main_~yx~0)) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))} is VALID [2022-04-08 11:05:34,462 INFO L290 TraceCheckUtils]: 26: Hoare triple {3245#(= main_~y~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,462 INFO L290 TraceCheckUtils]: 25: Hoare triple {3245#(= main_~y~0 0)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,462 INFO L290 TraceCheckUtils]: 24: Hoare triple {3245#(= main_~y~0 0)} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,462 INFO L290 TraceCheckUtils]: 23: Hoare triple {3245#(= main_~y~0 0)} assume !!(~x~0 <= ~X~0); {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,463 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {3225#true} {3245#(= main_~y~0 0)} #58#return; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,463 INFO L290 TraceCheckUtils]: 21: Hoare triple {3225#true} assume true; {3225#true} is VALID [2022-04-08 11:05:34,463 INFO L290 TraceCheckUtils]: 20: Hoare triple {3225#true} assume !(0 == ~cond); {3225#true} is VALID [2022-04-08 11:05:34,463 INFO L290 TraceCheckUtils]: 19: Hoare triple {3225#true} ~cond := #in~cond; {3225#true} is VALID [2022-04-08 11:05:34,463 INFO L272 TraceCheckUtils]: 18: Hoare triple {3245#(= main_~y~0 0)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3225#true} is VALID [2022-04-08 11:05:34,463 INFO L290 TraceCheckUtils]: 17: Hoare triple {3245#(= main_~y~0 0)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,464 INFO L290 TraceCheckUtils]: 16: Hoare triple {3245#(= main_~y~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,464 INFO L290 TraceCheckUtils]: 15: Hoare triple {3245#(= main_~y~0 0)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,464 INFO L290 TraceCheckUtils]: 14: Hoare triple {3245#(= main_~y~0 0)} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,464 INFO L290 TraceCheckUtils]: 13: Hoare triple {3245#(= main_~y~0 0)} assume !!(~x~0 <= ~X~0); {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,465 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {3225#true} {3245#(= main_~y~0 0)} #58#return; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,465 INFO L290 TraceCheckUtils]: 11: Hoare triple {3225#true} assume true; {3225#true} is VALID [2022-04-08 11:05:34,465 INFO L290 TraceCheckUtils]: 10: Hoare triple {3225#true} assume !(0 == ~cond); {3225#true} is VALID [2022-04-08 11:05:34,465 INFO L290 TraceCheckUtils]: 9: Hoare triple {3225#true} ~cond := #in~cond; {3225#true} is VALID [2022-04-08 11:05:34,465 INFO L272 TraceCheckUtils]: 8: Hoare triple {3245#(= main_~y~0 0)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3225#true} is VALID [2022-04-08 11:05:34,465 INFO L290 TraceCheckUtils]: 7: Hoare triple {3245#(= main_~y~0 0)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,466 INFO L290 TraceCheckUtils]: 6: Hoare triple {3245#(= main_~y~0 0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,466 INFO L290 TraceCheckUtils]: 5: Hoare triple {3225#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {3245#(= main_~y~0 0)} is VALID [2022-04-08 11:05:34,466 INFO L272 TraceCheckUtils]: 4: Hoare triple {3225#true} call #t~ret9 := main(); {3225#true} is VALID [2022-04-08 11:05:34,466 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3225#true} {3225#true} #62#return; {3225#true} is VALID [2022-04-08 11:05:34,466 INFO L290 TraceCheckUtils]: 2: Hoare triple {3225#true} assume true; {3225#true} is VALID [2022-04-08 11:05:34,466 INFO L290 TraceCheckUtils]: 1: Hoare triple {3225#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {3225#true} is VALID [2022-04-08 11:05:34,466 INFO L272 TraceCheckUtils]: 0: Hoare triple {3225#true} call ULTIMATE.init(); {3225#true} is VALID [2022-04-08 11:05:34,466 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-08 11:05:34,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:05:34,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732499832] [2022-04-08 11:05:34,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:05:34,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813377236] [2022-04-08 11:05:34,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813377236] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 11:05:34,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 11:05:34,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-04-08 11:05:34,467 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:05:34,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1224623942] [2022-04-08 11:05:34,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1224623942] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:05:34,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:05:34,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-08 11:05:34,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117492773] [2022-04-08 11:05:34,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:05:34,468 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2022-04-08 11:05:34,468 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:05:34,468 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:05:36,492 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 27 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-08 11:05:36,492 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-08 11:05:36,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:05:36,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-08 11:05:36,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-08 11:05:36,493 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:05:40,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:05:44,585 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:05:46,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:05:48,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:05:50,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:05:52,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-08 11:05:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:05:54,918 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2022-04-08 11:05:54,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-08 11:05:54,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2022-04-08 11:05:54,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:05:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:05:54,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 46 transitions. [2022-04-08 11:05:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:05:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 46 transitions. [2022-04-08 11:05:54,920 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 11 states and 46 transitions. [2022-04-08 11:05:56,959 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 45 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-08 11:05:56,960 INFO L225 Difference]: With dead ends: 67 [2022-04-08 11:05:56,960 INFO L226 Difference]: Without dead ends: 61 [2022-04-08 11:05:56,960 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2022-04-08 11:05:56,960 INFO L913 BasicCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 10 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-04-08 11:05:56,961 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 59 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 74 Invalid, 6 Unknown, 0 Unchecked, 12.1s Time] [2022-04-08 11:05:56,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-04-08 11:05:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-04-08 11:05:57,006 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:05:57,006 INFO L82 GeneralOperation]: Start isEquivalent. First operand 61 states. Second operand has 59 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:05:57,006 INFO L74 IsIncluded]: Start isIncluded. First operand 61 states. Second operand has 59 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:05:57,007 INFO L87 Difference]: Start difference. First operand 61 states. Second operand has 59 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:05:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:05:57,008 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2022-04-08 11:05:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2022-04-08 11:05:57,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:05:57,008 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:05:57,008 INFO L74 IsIncluded]: Start isIncluded. First operand has 59 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 61 states. [2022-04-08 11:05:57,009 INFO L87 Difference]: Start difference. First operand has 59 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 61 states. [2022-04-08 11:05:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:05:57,010 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2022-04-08 11:05:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2022-04-08 11:05:57,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:05:57,010 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:05:57,010 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:05:57,010 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:05:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 11:05:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2022-04-08 11:05:57,011 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 39 [2022-04-08 11:05:57,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:05:57,012 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2022-04-08 11:05:57,012 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-08 11:05:57,012 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 59 states and 68 transitions. [2022-04-08 11:06:05,352 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 68 edges. 64 inductive. 0 not inductive. 4 times theorem prover too weak to decide inductivity. [2022-04-08 11:06:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2022-04-08 11:06:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-08 11:06:05,352 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:06:05,352 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 11:06:05,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-08 11:06:05,562 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-08 11:06:05,562 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:06:05,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:06:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1449367094, now seen corresponding path program 1 times [2022-04-08 11:06:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:06:05,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [656163308] [2022-04-08 11:06:05,649 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 11:06:05,649 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 11:06:05,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1449367094, now seen corresponding path program 2 times [2022-04-08 11:06:05,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:06:05,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123443769] [2022-04-08 11:06:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:06:05,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:06:05,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:06:05,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039816411] [2022-04-08 11:06:05,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 11:06:05,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:06:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:06:05,658 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:06:05,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-08 11:06:05,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 11:06:05,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:06:05,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-08 11:06:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:06:05,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:06:06,474 INFO L272 TraceCheckUtils]: 0: Hoare triple {3854#true} call ULTIMATE.init(); {3854#true} is VALID [2022-04-08 11:06:06,475 INFO L290 TraceCheckUtils]: 1: Hoare triple {3854#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {3854#true} is VALID [2022-04-08 11:06:06,475 INFO L290 TraceCheckUtils]: 2: Hoare triple {3854#true} assume true; {3854#true} is VALID [2022-04-08 11:06:06,475 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3854#true} {3854#true} #62#return; {3854#true} is VALID [2022-04-08 11:06:06,475 INFO L272 TraceCheckUtils]: 4: Hoare triple {3854#true} call #t~ret9 := main(); {3854#true} is VALID [2022-04-08 11:06:06,475 INFO L290 TraceCheckUtils]: 5: Hoare triple {3854#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} is VALID [2022-04-08 11:06:06,476 INFO L290 TraceCheckUtils]: 6: Hoare triple {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} is VALID [2022-04-08 11:06:06,476 INFO L290 TraceCheckUtils]: 7: Hoare triple {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} is VALID [2022-04-08 11:06:06,476 INFO L272 TraceCheckUtils]: 8: Hoare triple {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3854#true} is VALID [2022-04-08 11:06:06,476 INFO L290 TraceCheckUtils]: 9: Hoare triple {3854#true} ~cond := #in~cond; {3854#true} is VALID [2022-04-08 11:06:06,476 INFO L290 TraceCheckUtils]: 10: Hoare triple {3854#true} assume !(0 == ~cond); {3854#true} is VALID [2022-04-08 11:06:06,476 INFO L290 TraceCheckUtils]: 11: Hoare triple {3854#true} assume true; {3854#true} is VALID [2022-04-08 11:06:06,477 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {3854#true} {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} #58#return; {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} is VALID [2022-04-08 11:06:06,477 INFO L290 TraceCheckUtils]: 13: Hoare triple {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} assume !!(~x~0 <= ~X~0); {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} is VALID [2022-04-08 11:06:06,478 INFO L290 TraceCheckUtils]: 14: Hoare triple {3874#(and (<= main_~x~0 0) (<= (* main_~Y~0 2) (+ main_~X~0 main_~v~0)))} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {3902#(and (<= main_~x~0 0) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} is VALID [2022-04-08 11:06:06,479 INFO L290 TraceCheckUtils]: 15: Hoare triple {3902#(and (<= main_~x~0 0) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} is VALID [2022-04-08 11:06:06,479 INFO L290 TraceCheckUtils]: 16: Hoare triple {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} is VALID [2022-04-08 11:06:06,480 INFO L290 TraceCheckUtils]: 17: Hoare triple {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} is VALID [2022-04-08 11:06:06,480 INFO L272 TraceCheckUtils]: 18: Hoare triple {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3854#true} is VALID [2022-04-08 11:06:06,480 INFO L290 TraceCheckUtils]: 19: Hoare triple {3854#true} ~cond := #in~cond; {3854#true} is VALID [2022-04-08 11:06:06,480 INFO L290 TraceCheckUtils]: 20: Hoare triple {3854#true} assume !(0 == ~cond); {3854#true} is VALID [2022-04-08 11:06:06,480 INFO L290 TraceCheckUtils]: 21: Hoare triple {3854#true} assume true; {3854#true} is VALID [2022-04-08 11:06:06,480 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {3854#true} {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} #58#return; {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} is VALID [2022-04-08 11:06:06,481 INFO L290 TraceCheckUtils]: 23: Hoare triple {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} assume !!(~x~0 <= ~X~0); {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} is VALID [2022-04-08 11:06:06,482 INFO L290 TraceCheckUtils]: 24: Hoare triple {3906#(and (<= main_~x~0 1) (< (div (+ (- 1) (* (- 1) main_~v~0)) (- 2)) (+ (div (+ (- 1) main_~X~0) 2) 1)))} assume !(~v~0 < 0);~v~0 := ~v~0 + 2 * (~Y~0 - ~X~0);#t~post7 := ~y~0;~y~0 := 1 + #t~post7;havoc #t~post7; {3934#(and (<= main_~x~0 1) (< 0 (div (+ (- 1) main_~X~0) 2)))} is VALID [2022-04-08 11:06:06,482 INFO L290 TraceCheckUtils]: 25: Hoare triple {3934#(and (<= main_~x~0 1) (< 0 (div (+ (- 1) main_~X~0) 2)))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {3938#(and (<= main_~x~0 2) (< 0 (div (+ (- 1) main_~X~0) 2)))} is VALID [2022-04-08 11:06:06,482 INFO L290 TraceCheckUtils]: 26: Hoare triple {3938#(and (<= main_~x~0 2) (< 0 (div (+ (- 1) main_~X~0) 2)))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3938#(and (<= main_~x~0 2) (< 0 (div (+ (- 1) main_~X~0) 2)))} is VALID [2022-04-08 11:06:06,483 INFO L290 TraceCheckUtils]: 27: Hoare triple {3938#(and (<= main_~x~0 2) (< 0 (div (+ (- 1) main_~X~0) 2)))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3938#(and (<= main_~x~0 2) (< 0 (div (+ (- 1) main_~X~0) 2)))} is VALID [2022-04-08 11:06:06,483 INFO L272 TraceCheckUtils]: 28: Hoare triple {3938#(and (<= main_~x~0 2) (< 0 (div (+ (- 1) main_~X~0) 2)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3854#true} is VALID [2022-04-08 11:06:06,483 INFO L290 TraceCheckUtils]: 29: Hoare triple {3854#true} ~cond := #in~cond; {3854#true} is VALID [2022-04-08 11:06:06,483 INFO L290 TraceCheckUtils]: 30: Hoare triple {3854#true} assume !(0 == ~cond); {3854#true} is VALID [2022-04-08 11:06:06,483 INFO L290 TraceCheckUtils]: 31: Hoare triple {3854#true} assume true; {3854#true} is VALID [2022-04-08 11:06:06,484 INFO L284 TraceCheckUtils]: 32: Hoare quadruple {3854#true} {3938#(and (<= main_~x~0 2) (< 0 (div (+ (- 1) main_~X~0) 2)))} #58#return; {3938#(and (<= main_~x~0 2) (< 0 (div (+ (- 1) main_~X~0) 2)))} is VALID [2022-04-08 11:06:06,484 INFO L290 TraceCheckUtils]: 33: Hoare triple {3938#(and (<= main_~x~0 2) (< 0 (div (+ (- 1) main_~X~0) 2)))} assume !(~x~0 <= ~X~0); {3855#false} is VALID [2022-04-08 11:06:06,484 INFO L290 TraceCheckUtils]: 34: Hoare triple {3855#false} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {3855#false} is VALID [2022-04-08 11:06:06,484 INFO L272 TraceCheckUtils]: 35: Hoare triple {3855#false} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {3855#false} is VALID [2022-04-08 11:06:06,484 INFO L290 TraceCheckUtils]: 36: Hoare triple {3855#false} ~cond := #in~cond; {3855#false} is VALID [2022-04-08 11:06:06,484 INFO L290 TraceCheckUtils]: 37: Hoare triple {3855#false} assume 0 == ~cond; {3855#false} is VALID [2022-04-08 11:06:06,484 INFO L290 TraceCheckUtils]: 38: Hoare triple {3855#false} assume !false; {3855#false} is VALID [2022-04-08 11:06:06,485 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-08 11:06:06,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 11:06:06,730 INFO L290 TraceCheckUtils]: 38: Hoare triple {3855#false} assume !false; {3855#false} is VALID [2022-04-08 11:06:06,731 INFO L290 TraceCheckUtils]: 37: Hoare triple {3855#false} assume 0 == ~cond; {3855#false} is VALID [2022-04-08 11:06:06,731 INFO L290 TraceCheckUtils]: 36: Hoare triple {3855#false} ~cond := #in~cond; {3855#false} is VALID [2022-04-08 11:06:06,731 INFO L272 TraceCheckUtils]: 35: Hoare triple {3855#false} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 + 2 * ~y~0 then 1 else 0)); {3855#false} is VALID [2022-04-08 11:06:06,731 INFO L290 TraceCheckUtils]: 34: Hoare triple {3855#false} ~xy~0 := ~x~0 * ~y~0;~yx~0 := ~Y~0 * ~x~0; {3855#false} is VALID [2022-04-08 11:06:06,731 INFO L290 TraceCheckUtils]: 33: Hoare triple {3993#(<= main_~x~0 main_~X~0)} assume !(~x~0 <= ~X~0); {3855#false} is VALID [2022-04-08 11:06:06,732 INFO L284 TraceCheckUtils]: 32: Hoare quadruple {3854#true} {3993#(<= main_~x~0 main_~X~0)} #58#return; {3993#(<= main_~x~0 main_~X~0)} is VALID [2022-04-08 11:06:06,732 INFO L290 TraceCheckUtils]: 31: Hoare triple {3854#true} assume true; {3854#true} is VALID [2022-04-08 11:06:06,732 INFO L290 TraceCheckUtils]: 30: Hoare triple {3854#true} assume !(0 == ~cond); {3854#true} is VALID [2022-04-08 11:06:06,732 INFO L290 TraceCheckUtils]: 29: Hoare triple {3854#true} ~cond := #in~cond; {3854#true} is VALID [2022-04-08 11:06:06,732 INFO L272 TraceCheckUtils]: 28: Hoare triple {3993#(<= main_~x~0 main_~X~0)} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3854#true} is VALID [2022-04-08 11:06:06,732 INFO L290 TraceCheckUtils]: 27: Hoare triple {3993#(<= main_~x~0 main_~X~0)} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {3993#(<= main_~x~0 main_~X~0)} is VALID [2022-04-08 11:06:06,732 INFO L290 TraceCheckUtils]: 26: Hoare triple {3993#(<= main_~x~0 main_~X~0)} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {3993#(<= main_~x~0 main_~X~0)} is VALID [2022-04-08 11:06:06,733 INFO L290 TraceCheckUtils]: 25: Hoare triple {4018#(<= (+ main_~x~0 1) main_~X~0)} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {3993#(<= main_~x~0 main_~X~0)} is VALID [2022-04-08 11:06:06,733 INFO L290 TraceCheckUtils]: 24: Hoare triple {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} assume !(~v~0 < 0);~v~0 := ~v~0 + 2 * (~Y~0 - ~X~0);#t~post7 := ~y~0;~y~0 := 1 + #t~post7;havoc #t~post7; {4018#(<= (+ main_~x~0 1) main_~X~0)} is VALID [2022-04-08 11:06:06,734 INFO L290 TraceCheckUtils]: 23: Hoare triple {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} assume !!(~x~0 <= ~X~0); {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} is VALID [2022-04-08 11:06:06,734 INFO L284 TraceCheckUtils]: 22: Hoare quadruple {3854#true} {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} #58#return; {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} is VALID [2022-04-08 11:06:06,734 INFO L290 TraceCheckUtils]: 21: Hoare triple {3854#true} assume true; {3854#true} is VALID [2022-04-08 11:06:06,734 INFO L290 TraceCheckUtils]: 20: Hoare triple {3854#true} assume !(0 == ~cond); {3854#true} is VALID [2022-04-08 11:06:06,734 INFO L290 TraceCheckUtils]: 19: Hoare triple {3854#true} ~cond := #in~cond; {3854#true} is VALID [2022-04-08 11:06:06,734 INFO L272 TraceCheckUtils]: 18: Hoare triple {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3854#true} is VALID [2022-04-08 11:06:06,735 INFO L290 TraceCheckUtils]: 17: Hoare triple {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} is VALID [2022-04-08 11:06:06,735 INFO L290 TraceCheckUtils]: 16: Hoare triple {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} is VALID [2022-04-08 11:06:06,735 INFO L290 TraceCheckUtils]: 15: Hoare triple {4050#(or (<= (+ main_~x~0 2) main_~X~0) (< main_~v~0 0))} #t~post8 := ~x~0;~x~0 := 1 + #t~post8;havoc #t~post8; {4022#(or (< main_~v~0 0) (<= (+ main_~x~0 1) main_~X~0))} is VALID [2022-04-08 11:06:06,736 INFO L290 TraceCheckUtils]: 14: Hoare triple {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} assume ~v~0 < 0;~v~0 := ~v~0 + 2 * ~Y~0; {4050#(or (<= (+ main_~x~0 2) main_~X~0) (< main_~v~0 0))} is VALID [2022-04-08 11:06:06,736 INFO L290 TraceCheckUtils]: 13: Hoare triple {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} assume !!(~x~0 <= ~X~0); {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} is VALID [2022-04-08 11:06:06,737 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {3854#true} {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} #58#return; {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} is VALID [2022-04-08 11:06:06,737 INFO L290 TraceCheckUtils]: 11: Hoare triple {3854#true} assume true; {3854#true} is VALID [2022-04-08 11:06:06,737 INFO L290 TraceCheckUtils]: 10: Hoare triple {3854#true} assume !(0 == ~cond); {3854#true} is VALID [2022-04-08 11:06:06,737 INFO L290 TraceCheckUtils]: 9: Hoare triple {3854#true} ~cond := #in~cond; {3854#true} is VALID [2022-04-08 11:06:06,737 INFO L272 TraceCheckUtils]: 8: Hoare triple {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} call __VERIFIER_assert((if 0 == 2 * ~yx~0 - 2 * ~xy~0 - ~X~0 + 2 * ~Y~0 - ~v~0 then 1 else 0)); {3854#true} is VALID [2022-04-08 11:06:06,737 INFO L290 TraceCheckUtils]: 7: Hoare triple {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} assume !!(#t~post6 < 10);havoc #t~post6;~yx~0 := ~Y~0 * ~x~0;~xy~0 := ~X~0 * ~y~0; {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} is VALID [2022-04-08 11:06:06,738 INFO L290 TraceCheckUtils]: 6: Hoare triple {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} #t~post6 := ~counter~0;~counter~0 := 1 + #t~post6; {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} is VALID [2022-04-08 11:06:06,738 INFO L290 TraceCheckUtils]: 5: Hoare triple {3854#true} havoc ~X~0;havoc ~Y~0;havoc ~x~0;havoc ~y~0;havoc ~v~0;havoc ~xy~0;havoc ~yx~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~X~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~Y~0 := #t~nondet5;havoc #t~nondet5;~v~0 := 2 * ~Y~0 - ~X~0;~y~0 := 0;~x~0 := 0; {4054#(or (<= (+ main_~x~0 2) main_~X~0) (< (+ main_~v~0 (* main_~Y~0 2)) 0) (not (< main_~v~0 0)))} is VALID [2022-04-08 11:06:06,738 INFO L272 TraceCheckUtils]: 4: Hoare triple {3854#true} call #t~ret9 := main(); {3854#true} is VALID [2022-04-08 11:06:06,738 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {3854#true} {3854#true} #62#return; {3854#true} is VALID [2022-04-08 11:06:06,738 INFO L290 TraceCheckUtils]: 2: Hoare triple {3854#true} assume true; {3854#true} is VALID [2022-04-08 11:06:06,739 INFO L290 TraceCheckUtils]: 1: Hoare triple {3854#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(15, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {3854#true} is VALID [2022-04-08 11:06:06,739 INFO L272 TraceCheckUtils]: 0: Hoare triple {3854#true} call ULTIMATE.init(); {3854#true} is VALID [2022-04-08 11:06:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-08 11:06:06,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 11:06:06,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123443769] [2022-04-08 11:06:06,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 11:06:06,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039816411] [2022-04-08 11:06:06,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039816411] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-08 11:06:06,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-08 11:06:06,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-04-08 11:06:06,739 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 11:06:06,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [656163308] [2022-04-08 11:06:06,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [656163308] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 11:06:06,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 11:06:06,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 11:06:06,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100041288] [2022-04-08 11:06:06,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 11:06:06,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2022-04-08 11:06:06,740 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 11:06:06,740 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:06:06,764 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:06:06,764 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 11:06:06,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 11:06:06,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 11:06:06,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-04-08 11:06:06,765 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:06:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:06:07,069 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2022-04-08 11:06:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 11:06:07,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2022-04-08 11:06:07,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 11:06:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:06:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 53 transitions. [2022-04-08 11:06:07,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:06:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 53 transitions. [2022-04-08 11:06:07,071 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 53 transitions. [2022-04-08 11:06:07,111 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 11:06:07,112 INFO L225 Difference]: With dead ends: 72 [2022-04-08 11:06:07,112 INFO L226 Difference]: Without dead ends: 66 [2022-04-08 11:06:07,112 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-04-08 11:06:07,112 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 11:06:07,113 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 99 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 11:06:07,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-04-08 11:06:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2022-04-08 11:06:07,204 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 11:06:07,204 INFO L82 GeneralOperation]: Start isEquivalent. First operand 66 states. Second operand has 64 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 11:06:07,205 INFO L74 IsIncluded]: Start isIncluded. First operand 66 states. Second operand has 64 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 11:06:07,205 INFO L87 Difference]: Start difference. First operand 66 states. Second operand has 64 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 11:06:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:06:07,207 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-04-08 11:06:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2022-04-08 11:06:07,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:06:07,207 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:06:07,207 INFO L74 IsIncluded]: Start isIncluded. First operand has 64 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 9 states have call successors, (9), 6 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 66 states. [2022-04-08 11:06:07,207 INFO L87 Difference]: Start difference. First operand has 64 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 9 states have call successors, (9), 6 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 66 states. [2022-04-08 11:06:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 11:06:07,208 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-04-08 11:06:07,208 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2022-04-08 11:06:07,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 11:06:07,208 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 11:06:07,208 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 11:06:07,208 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 11:06:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 11:06:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2022-04-08 11:06:07,210 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 39 [2022-04-08 11:06:07,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 11:06:07,210 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2022-04-08 11:06:07,210 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 11:06:07,210 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 64 states and 74 transitions. [2022-04-08 11:06:17,626 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 74 edges. 69 inductive. 0 not inductive. 5 times theorem prover too weak to decide inductivity. [2022-04-08 11:06:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2022-04-08 11:06:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-08 11:06:17,626 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 11:06:17,626 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 11:06:17,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-04-08 11:06:17,827 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-08 11:06:17,827 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 11:06:17,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 11:06:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1425187914, now seen corresponding path program 3 times [2022-04-08 11:06:17,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 11:06:17,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1098567342] [2022-04-08 11:06:17,908 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-08 11:06:17,908 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 11:06:17,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1425187914, now seen corresponding path program 4 times [2022-04-08 11:06:17,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 11:06:17,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469728222] [2022-04-08 11:06:17,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 11:06:17,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 11:06:17,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 11:06:17,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170430081] [2022-04-08 11:06:17,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-08 11:06:17,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 11:06:17,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 11:06:17,918 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 11:06:17,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-08 11:06:18,637 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-08 11:06:18,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 11:06:18,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 47 conjunts are in the unsatisfiable core [2022-04-08 11:06:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 11:06:18,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 11:06:34,090 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-08 11:06:40,692 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-08 11:06:45,448 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful