/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 09:10:09,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 09:10:09,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 09:10:09,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 09:10:09,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-15 09:10:09,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-15 09:10:09,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-15 09:10:09,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-15 09:10:09,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-15 09:10:09,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-15 09:10:09,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-15 09:10:09,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-15 09:10:09,859 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-15 09:10:09,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-15 09:10:09,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-15 09:10:09,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-15 09:10:09,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-15 09:10:09,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-15 09:10:09,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 09:10:09,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 09:10:09,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 09:10:09,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-15 09:10:09,890 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 09:10:09,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 09:10:09,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 09:10:09,892 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-15 09:10:09,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 09:10:09,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-15 09:10:09,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 09:10:09,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 09:10:09,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 09:10:09,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 09:10:09,894 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-15 09:10:09,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 09:10:09,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 09:10:09,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 09:10:09,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 09:10:09,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 09:10:09,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 09:10:09,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 09:10:09,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 09:10:09,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 09:10:09,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 09:10:09,895 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 09:10:09,896 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 09:10:09,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 09:10:09,896 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-15 09:10:09,896 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 09:10:10,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 09:10:10,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 09:10:10,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 09:10:10,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 09:10:10,142 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 09:10:10,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound1.c [2022-04-15 09:10:10,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711652adf/1b7509585df646d38819ad552ba13316/FLAG199e2b47d [2022-04-15 09:10:10,531 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 09:10:10,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound1.c [2022-04-15 09:10:10,537 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711652adf/1b7509585df646d38819ad552ba13316/FLAG199e2b47d [2022-04-15 09:10:10,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/711652adf/1b7509585df646d38819ad552ba13316 [2022-04-15 09:10:10,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 09:10:10,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 09:10:10,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 09:10:10,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 09:10:10,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 09:10:10,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 09:10:10" (1/1) ... [2022-04-15 09:10:10,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7753b0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:10, skipping insertion in model container [2022-04-15 09:10:10,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 09:10:10" (1/1) ... [2022-04-15 09:10:10,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 09:10:11,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 09:10:11,157 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/geo3-ll_unwindbound1.c[525,538] [2022-04-15 09:10:11,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 09:10:11,185 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 09:10:11,194 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/geo3-ll_unwindbound1.c[525,538] [2022-04-15 09:10:11,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 09:10:11,209 INFO L208 MainTranslator]: Completed translation [2022-04-15 09:10:11,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11 WrapperNode [2022-04-15 09:10:11,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 09:10:11,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 09:10:11,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 09:10:11,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 09:10:11,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11" (1/1) ... [2022-04-15 09:10:11,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11" (1/1) ... [2022-04-15 09:10:11,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11" (1/1) ... [2022-04-15 09:10:11,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11" (1/1) ... [2022-04-15 09:10:11,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11" (1/1) ... [2022-04-15 09:10:11,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11" (1/1) ... [2022-04-15 09:10:11,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11" (1/1) ... [2022-04-15 09:10:11,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 09:10:11,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 09:10:11,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 09:10:11,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 09:10:11,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11" (1/1) ... [2022-04-15 09:10:11,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 09:10:11,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 09:10:11,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-15 09:10:11,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-15 09:10:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 09:10:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 09:10:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 09:10:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 09:10:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 09:10:11,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 09:10:11,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 09:10:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 09:10:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 09:10:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 09:10:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-15 09:10:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 09:10:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 09:10:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 09:10:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 09:10:11,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 09:10:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 09:10:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 09:10:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 09:10:11,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 09:10:11,335 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 09:10:11,337 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 09:10:11,491 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 09:10:11,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 09:10:11,497 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 09:10:11,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 09:10:11 BoogieIcfgContainer [2022-04-15 09:10:11,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 09:10:11,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 09:10:11,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 09:10:11,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 09:10:11,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 09:10:10" (1/3) ... [2022-04-15 09:10:11,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d62f783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 09:10:11, skipping insertion in model container [2022-04-15 09:10:11,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 09:10:11" (2/3) ... [2022-04-15 09:10:11,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d62f783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 09:10:11, skipping insertion in model container [2022-04-15 09:10:11,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 09:10:11" (3/3) ... [2022-04-15 09:10:11,523 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound1.c [2022-04-15 09:10:11,527 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 09:10:11,527 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 09:10:11,556 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 09:10:11,561 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-15 09:10:11,561 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 09:10:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 09:10:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-15 09:10:11,580 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 09:10:11,580 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 09:10:11,581 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 09:10:11,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 09:10:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 1 times [2022-04-15 09:10:11,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 09:10:11,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1407405979] [2022-04-15 09:10:11,597 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 09:10:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 2 times [2022-04-15 09:10:11,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 09:10:11,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590348604] [2022-04-15 09:10:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 09:10:11,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 09:10:11,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 09:10:11,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678753209] [2022-04-15 09:10:11,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 09:10:11,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 09:10:11,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 09:10:11,692 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 09:10:11,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 09:10:11,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 09:10:11,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 09:10:11,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-15 09:10:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 09:10:11,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 09:10:11,827 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {25#true} is VALID [2022-04-15 09:10:11,828 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {25#true} is VALID [2022-04-15 09:10:11,828 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-15 09:10:11,828 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} #54#return; {25#true} is VALID [2022-04-15 09:10:11,829 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} call #t~ret8 := main(); {25#true} is VALID [2022-04-15 09:10:11,829 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {25#true} is VALID [2022-04-15 09:10:11,830 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} assume !true; {26#false} is VALID [2022-04-15 09:10:11,830 INFO L272 TraceCheckUtils]: 7: Hoare triple {26#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {26#false} is VALID [2022-04-15 09:10:11,830 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-04-15 09:10:11,831 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2022-04-15 09:10:11,831 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-04-15 09:10:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 09:10:11,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 09:10:11,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 09:10:11,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590348604] [2022-04-15 09:10:11,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 09:10:11,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678753209] [2022-04-15 09:10:11,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678753209] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 09:10:11,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 09:10:11,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-15 09:10:11,836 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 09:10:11,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1407405979] [2022-04-15 09:10:11,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1407405979] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 09:10:11,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 09:10:11,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-15 09:10:11,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413768222] [2022-04-15 09:10:11,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 09:10:11,841 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-15 09:10:11,843 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 09:10:11,845 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:11,858 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:11,858 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-15 09:10:11,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 09:10:11,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-15 09:10:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-15 09:10:11,877 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:11,915 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-04-15 09:10:11,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-15 09:10:11,915 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-15 09:10:11,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 09:10:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2022-04-15 09:10:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2022-04-15 09:10:11,927 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 2 states and 48 transitions. [2022-04-15 09:10:11,990 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:11,999 INFO L225 Difference]: With dead ends: 38 [2022-04-15 09:10:11,999 INFO L226 Difference]: Without dead ends: 17 [2022-04-15 09:10:12,002 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-15 09:10:12,007 INFO L913 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 09:10:12,008 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 09:10:12,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-15 09:10:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-15 09:10:12,042 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 09:10:12,043 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:12,044 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:12,044 INFO L87 Difference]: Start difference. First operand 17 states. Second operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:12,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:12,050 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-15 09:10:12,050 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 09:10:12,050 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:10:12,050 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:10:12,051 INFO L74 IsIncluded]: Start isIncluded. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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 17 states. [2022-04-15 09:10:12,051 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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 17 states. [2022-04-15 09:10:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:12,054 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-15 09:10:12,054 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 09:10:12,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:10:12,056 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:10:12,058 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 09:10:12,058 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 09:10:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-15 09:10:12,070 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-15 09:10:12,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 09:10:12,070 INFO L478 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-15 09:10:12,070 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:12,070 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 17 states and 19 transitions. [2022-04-15 09:10:12,092 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 19 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:12,092 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-15 09:10:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-15 09:10:12,093 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 09:10:12,093 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 09:10:12,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-15 09:10:12,299 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-15 09:10:12,300 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 09:10:12,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 09:10:12,301 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 1 times [2022-04-15 09:10:12,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 09:10:12,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2075110321] [2022-04-15 09:10:12,302 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 09:10:12,302 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 2 times [2022-04-15 09:10:12,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 09:10:12,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280145328] [2022-04-15 09:10:12,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 09:10:12,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 09:10:12,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 09:10:12,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450566533] [2022-04-15 09:10:12,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 09:10:12,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 09:10:12,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 09:10:12,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 09:10:12,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 09:10:12,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 09:10:12,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 09:10:12,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-15 09:10:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 09:10:12,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 09:10:12,578 INFO L272 TraceCheckUtils]: 0: Hoare triple {203#true} call ULTIMATE.init(); {203#true} is VALID [2022-04-15 09:10:12,578 INFO L290 TraceCheckUtils]: 1: Hoare triple {203#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(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {211#(<= ~counter~0 0)} is VALID [2022-04-15 09:10:12,579 INFO L290 TraceCheckUtils]: 2: Hoare triple {211#(<= ~counter~0 0)} assume true; {211#(<= ~counter~0 0)} is VALID [2022-04-15 09:10:12,580 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {211#(<= ~counter~0 0)} {203#true} #54#return; {211#(<= ~counter~0 0)} is VALID [2022-04-15 09:10:12,580 INFO L272 TraceCheckUtils]: 4: Hoare triple {211#(<= ~counter~0 0)} call #t~ret8 := main(); {211#(<= ~counter~0 0)} is VALID [2022-04-15 09:10:12,581 INFO L290 TraceCheckUtils]: 5: Hoare triple {211#(<= ~counter~0 0)} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {211#(<= ~counter~0 0)} is VALID [2022-04-15 09:10:12,581 INFO L290 TraceCheckUtils]: 6: Hoare triple {211#(<= ~counter~0 0)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {227#(<= |main_#t~post7| 0)} is VALID [2022-04-15 09:10:12,582 INFO L290 TraceCheckUtils]: 7: Hoare triple {227#(<= |main_#t~post7| 0)} assume !(#t~post7 < 1);havoc #t~post7; {204#false} is VALID [2022-04-15 09:10:12,582 INFO L272 TraceCheckUtils]: 8: Hoare triple {204#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {204#false} is VALID [2022-04-15 09:10:12,582 INFO L290 TraceCheckUtils]: 9: Hoare triple {204#false} ~cond := #in~cond; {204#false} is VALID [2022-04-15 09:10:12,583 INFO L290 TraceCheckUtils]: 10: Hoare triple {204#false} assume 0 == ~cond; {204#false} is VALID [2022-04-15 09:10:12,584 INFO L290 TraceCheckUtils]: 11: Hoare triple {204#false} assume !false; {204#false} is VALID [2022-04-15 09:10:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 09:10:12,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 09:10:12,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 09:10:12,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280145328] [2022-04-15 09:10:12,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 09:10:12,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450566533] [2022-04-15 09:10:12,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450566533] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 09:10:12,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 09:10:12,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 09:10:12,586 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 09:10:12,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2075110321] [2022-04-15 09:10:12,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2075110321] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 09:10:12,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 09:10:12,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-15 09:10:12,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142591604] [2022-04-15 09:10:12,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 09:10:12,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 09:10:12,589 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 09:10:12,591 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:12,602 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:12,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-15 09:10:12,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 09:10:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-15 09:10:12,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-15 09:10:12,604 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:12,655 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-15 09:10:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-15 09:10:12,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 09:10:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 09:10:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:12,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-15 09:10:12,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-15 09:10:12,660 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 28 transitions. [2022-04-15 09:10:12,682 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:12,684 INFO L225 Difference]: With dead ends: 26 [2022-04-15 09:10:12,684 INFO L226 Difference]: Without dead ends: 19 [2022-04-15 09:10:12,685 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-15 09:10:12,688 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 09:10:12,690 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 09:10:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-15 09:10:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-15 09:10:12,700 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 09:10:12,700 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:12,701 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:12,701 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:12,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:12,704 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-15 09:10:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 09:10:12,705 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:10:12,705 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:10:12,706 INFO L74 IsIncluded]: Start isIncluded. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-15 09:10:12,707 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-15 09:10:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:12,708 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-15 09:10:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 09:10:12,708 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:10:12,709 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:10:12,709 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 09:10:12,709 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 09:10:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:12,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-15 09:10:12,710 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-15 09:10:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 09:10:12,710 INFO L478 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-15 09:10:12,711 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:12,711 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 19 states and 21 transitions. [2022-04-15 09:10:12,730 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 21 edges. 21 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-15 09:10:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-15 09:10:12,730 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 09:10:12,730 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 09:10:12,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-15 09:10:12,943 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-04-15 09:10:12,944 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 09:10:12,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 09:10:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 1 times [2022-04-15 09:10:12,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 09:10:12,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2104421895] [2022-04-15 09:10:12,945 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 09:10:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 2 times [2022-04-15 09:10:12,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 09:10:12,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903136548] [2022-04-15 09:10:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 09:10:12,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 09:10:12,959 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 09:10:12,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725481604] [2022-04-15 09:10:12,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 09:10:12,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 09:10:12,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 09:10:12,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 09:10:12,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-15 09:10:13,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 09:10:13,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 09:10:13,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-15 09:10:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 09:10:13,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 09:10:13,135 INFO L272 TraceCheckUtils]: 0: Hoare triple {370#true} call ULTIMATE.init(); {370#true} is VALID [2022-04-15 09:10:13,135 INFO L290 TraceCheckUtils]: 1: Hoare triple {370#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(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {370#true} is VALID [2022-04-15 09:10:13,135 INFO L290 TraceCheckUtils]: 2: Hoare triple {370#true} assume true; {370#true} is VALID [2022-04-15 09:10:13,136 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {370#true} {370#true} #54#return; {370#true} is VALID [2022-04-15 09:10:13,136 INFO L272 TraceCheckUtils]: 4: Hoare triple {370#true} call #t~ret8 := main(); {370#true} is VALID [2022-04-15 09:10:13,136 INFO L290 TraceCheckUtils]: 5: Hoare triple {370#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:13,137 INFO L290 TraceCheckUtils]: 6: Hoare triple {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:13,138 INFO L290 TraceCheckUtils]: 7: Hoare triple {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(#t~post7 < 1);havoc #t~post7; {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:13,139 INFO L272 TraceCheckUtils]: 8: Hoare triple {390#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {400#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 09:10:13,139 INFO L290 TraceCheckUtils]: 9: Hoare triple {400#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {404#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 09:10:13,140 INFO L290 TraceCheckUtils]: 10: Hoare triple {404#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {371#false} is VALID [2022-04-15 09:10:13,140 INFO L290 TraceCheckUtils]: 11: Hoare triple {371#false} assume !false; {371#false} is VALID [2022-04-15 09:10:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 09:10:13,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 09:10:13,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 09:10:13,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903136548] [2022-04-15 09:10:13,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 09:10:13,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725481604] [2022-04-15 09:10:13,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725481604] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 09:10:13,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 09:10:13,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 09:10:13,142 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 09:10:13,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2104421895] [2022-04-15 09:10:13,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2104421895] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 09:10:13,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 09:10:13,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 09:10:13,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441964187] [2022-04-15 09:10:13,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 09:10:13,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 09:10:13,143 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 09:10:13,143 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:13,154 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:13,154 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 09:10:13,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 09:10:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 09:10:13,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-15 09:10:13,155 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:13,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:13,264 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-04-15 09:10:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 09:10:13,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-15 09:10:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 09:10:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-15 09:10:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:13,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-15 09:10:13,268 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 31 transitions. [2022-04-15 09:10:13,295 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:13,296 INFO L225 Difference]: With dead ends: 28 [2022-04-15 09:10:13,296 INFO L226 Difference]: Without dead ends: 25 [2022-04-15 09:10:13,296 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-15 09:10:13,297 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 09:10:13,298 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 09:10:13,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-15 09:10:13,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-15 09:10:13,314 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 09:10:13,315 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-04-15 09:10:13,318 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-04-15 09:10:13,318 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-04-15 09:10:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:13,320 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-15 09:10:13,320 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-15 09:10:13,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:10:13,321 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:10:13,321 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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 25 states. [2022-04-15 09:10:13,322 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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 25 states. [2022-04-15 09:10:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:13,328 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-15 09:10:13,328 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-15 09:10:13,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:10:13,329 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:10:13,329 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 09:10:13,329 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 09:10:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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) [2022-04-15 09:10:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-15 09:10:13,332 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-15 09:10:13,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 09:10:13,332 INFO L478 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-15 09:10:13,333 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-15 09:10:13,334 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 27 transitions. [2022-04-15 09:10:13,362 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-15 09:10:13,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-15 09:10:13,364 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 09:10:13,364 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 09:10:13,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-15 09:10:13,586 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 09:10:13,587 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 09:10:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 09:10:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2089867248, now seen corresponding path program 1 times [2022-04-15 09:10:13,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 09:10:13,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [398883271] [2022-04-15 09:10:19,704 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-15 09:10:19,704 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-04-15 09:10:19,704 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-15 09:10:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2089867248, now seen corresponding path program 2 times [2022-04-15 09:10:19,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 09:10:19,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338777341] [2022-04-15 09:10:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 09:10:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 09:10:19,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 09:10:19,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879805748] [2022-04-15 09:10:19,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 09:10:19,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 09:10:19,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 09:10:19,718 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) [2022-04-15 09:10:19,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-15 09:10:19,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 09:10:19,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 09:10:19,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-15 09:10:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 09:10:19,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 09:10:20,100 INFO L272 TraceCheckUtils]: 0: Hoare triple {568#true} call ULTIMATE.init(); {568#true} is VALID [2022-04-15 09:10:20,100 INFO L290 TraceCheckUtils]: 1: Hoare triple {568#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(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {568#true} is VALID [2022-04-15 09:10:20,100 INFO L290 TraceCheckUtils]: 2: Hoare triple {568#true} assume true; {568#true} is VALID [2022-04-15 09:10:20,100 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {568#true} {568#true} #54#return; {568#true} is VALID [2022-04-15 09:10:20,101 INFO L272 TraceCheckUtils]: 4: Hoare triple {568#true} call #t~ret8 := main(); {568#true} is VALID [2022-04-15 09:10:20,101 INFO L290 TraceCheckUtils]: 5: Hoare triple {568#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {588#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:20,102 INFO L290 TraceCheckUtils]: 6: Hoare triple {588#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {588#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:20,103 INFO L290 TraceCheckUtils]: 7: Hoare triple {588#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(#t~post7 < 1);havoc #t~post7; {588#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:20,103 INFO L272 TraceCheckUtils]: 8: Hoare triple {588#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {568#true} is VALID [2022-04-15 09:10:20,103 INFO L290 TraceCheckUtils]: 9: Hoare triple {568#true} ~cond := #in~cond; {601#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-15 09:10:20,104 INFO L290 TraceCheckUtils]: 10: Hoare triple {601#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {605#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:10:20,104 INFO L290 TraceCheckUtils]: 11: Hoare triple {605#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {605#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:10:20,105 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {605#(not (= |__VERIFIER_assert_#in~cond| 0))} {588#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} #50#return; {588#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:20,107 INFO L290 TraceCheckUtils]: 13: Hoare triple {588#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {615#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:20,108 INFO L290 TraceCheckUtils]: 14: Hoare triple {615#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {615#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:20,110 INFO L290 TraceCheckUtils]: 15: Hoare triple {615#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !(#t~post7 < 1);havoc #t~post7; {615#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-15 09:10:20,145 INFO L272 TraceCheckUtils]: 16: Hoare triple {615#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {625#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 09:10:20,146 INFO L290 TraceCheckUtils]: 17: Hoare triple {625#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {629#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 09:10:20,146 INFO L290 TraceCheckUtils]: 18: Hoare triple {629#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {569#false} is VALID [2022-04-15 09:10:20,147 INFO L290 TraceCheckUtils]: 19: Hoare triple {569#false} assume !false; {569#false} is VALID [2022-04-15 09:10:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 09:10:20,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 09:10:52,843 INFO L290 TraceCheckUtils]: 19: Hoare triple {569#false} assume !false; {569#false} is VALID [2022-04-15 09:10:52,844 INFO L290 TraceCheckUtils]: 18: Hoare triple {629#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {569#false} is VALID [2022-04-15 09:10:52,844 INFO L290 TraceCheckUtils]: 17: Hoare triple {625#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {629#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 09:10:52,845 INFO L272 TraceCheckUtils]: 16: Hoare triple {645#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {625#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 09:10:52,846 INFO L290 TraceCheckUtils]: 15: Hoare triple {645#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !(#t~post7 < 1);havoc #t~post7; {645#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-15 09:10:52,846 INFO L290 TraceCheckUtils]: 14: Hoare triple {645#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {645#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-15 09:10:52,906 INFO L290 TraceCheckUtils]: 13: Hoare triple {655#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {645#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-15 09:10:52,909 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {605#(not (= |__VERIFIER_assert_#in~cond| 0))} {568#true} #50#return; {655#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} is VALID [2022-04-15 09:10:52,909 INFO L290 TraceCheckUtils]: 11: Hoare triple {605#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {605#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:10:52,910 INFO L290 TraceCheckUtils]: 10: Hoare triple {668#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {605#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:10:52,910 INFO L290 TraceCheckUtils]: 9: Hoare triple {568#true} ~cond := #in~cond; {668#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 09:10:52,910 INFO L272 TraceCheckUtils]: 8: Hoare triple {568#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {568#true} is VALID [2022-04-15 09:10:52,910 INFO L290 TraceCheckUtils]: 7: Hoare triple {568#true} assume !!(#t~post7 < 1);havoc #t~post7; {568#true} is VALID [2022-04-15 09:10:52,911 INFO L290 TraceCheckUtils]: 6: Hoare triple {568#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {568#true} is VALID [2022-04-15 09:10:52,911 INFO L290 TraceCheckUtils]: 5: Hoare triple {568#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {568#true} is VALID [2022-04-15 09:10:52,911 INFO L272 TraceCheckUtils]: 4: Hoare triple {568#true} call #t~ret8 := main(); {568#true} is VALID [2022-04-15 09:10:52,911 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {568#true} {568#true} #54#return; {568#true} is VALID [2022-04-15 09:10:52,911 INFO L290 TraceCheckUtils]: 2: Hoare triple {568#true} assume true; {568#true} is VALID [2022-04-15 09:10:52,911 INFO L290 TraceCheckUtils]: 1: Hoare triple {568#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(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {568#true} is VALID [2022-04-15 09:10:52,911 INFO L272 TraceCheckUtils]: 0: Hoare triple {568#true} call ULTIMATE.init(); {568#true} is VALID [2022-04-15 09:10:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 09:10:52,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 09:10:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338777341] [2022-04-15 09:10:52,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 09:10:52,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879805748] [2022-04-15 09:10:52,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879805748] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 09:10:52,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-15 09:10:52,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-04-15 09:10:52,913 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 09:10:52,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [398883271] [2022-04-15 09:10:52,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [398883271] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 09:10:52,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 09:10:52,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-15 09:10:52,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192586809] [2022-04-15 09:10:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 09:10:52,914 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 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 20 [2022-04-15 09:10:52,915 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 09:10:52,915 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:52,961 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:52,962 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-15 09:10:52,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 09:10:52,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-15 09:10:52,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-15 09:10:52,963 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:53,790 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2022-04-15 09:10:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-15 09:10:53,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 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 20 [2022-04-15 09:10:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 09:10:53,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 37 transitions. [2022-04-15 09:10:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:53,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 37 transitions. [2022-04-15 09:10:53,794 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 37 transitions. [2022-04-15 09:10:53,854 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:53,856 INFO L225 Difference]: With dead ends: 36 [2022-04-15 09:10:53,856 INFO L226 Difference]: Without dead ends: 33 [2022-04-15 09:10:53,856 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-15 09:10:53,857 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-15 09:10:53,857 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 92 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-15 09:10:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-15 09:10:53,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-15 09:10:53,870 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 09:10:53,870 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-04-15 09:10:53,870 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-04-15 09:10:53,871 INFO L87 Difference]: Start difference. First operand 33 states. Second operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-04-15 09:10:53,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:53,872 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-15 09:10:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-15 09:10:53,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:10:53,873 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:10:53,873 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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 33 states. [2022-04-15 09:10:53,873 INFO L87 Difference]: Start difference. First operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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 33 states. [2022-04-15 09:10:53,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:10:53,875 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-15 09:10:53,875 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-15 09:10:53,875 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:10:53,875 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:10:53,875 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 09:10:53,875 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 09:10:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-04-15 09:10:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-04-15 09:10:53,877 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2022-04-15 09:10:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 09:10:53,877 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-04-15 09:10:53,878 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-15 09:10:53,878 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 35 transitions. [2022-04-15 09:10:53,936 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:10:53,936 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-04-15 09:10:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-15 09:10:53,937 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 09:10:53,937 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 09:10:53,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-15 09:10:54,137 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 09:10:54,138 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 09:10:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 09:10:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash -696181196, now seen corresponding path program 3 times [2022-04-15 09:10:54,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 09:10:54,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2140120349] [2022-04-15 09:10:56,195 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 4 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-15 09:10:56,196 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-04-15 09:10:56,196 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-15 09:10:56,196 INFO L85 PathProgramCache]: Analyzing trace with hash -696181196, now seen corresponding path program 4 times [2022-04-15 09:10:56,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 09:10:56,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070692793] [2022-04-15 09:10:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 09:10:56,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 09:10:56,208 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 09:10:56,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921064503] [2022-04-15 09:10:56,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-15 09:10:56,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 09:10:56,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 09:10:56,215 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) [2022-04-15 09:10:56,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-15 09:11:11,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-15 09:11:11,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 09:11:11,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-15 09:11:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 09:11:12,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 09:11:25,848 WARN L914 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-15 09:11:34,441 WARN L914 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-15 09:11:38,549 WARN L914 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-15 09:12:01,950 WARN L914 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-15 09:12:04,268 WARN L914 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-15 09:12:08,693 WARN L914 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-15 09:12:14,825 INFO L272 TraceCheckUtils]: 0: Hoare triple {906#true} call ULTIMATE.init(); {906#true} is VALID [2022-04-15 09:12:14,825 INFO L290 TraceCheckUtils]: 1: Hoare triple {906#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(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {906#true} is VALID [2022-04-15 09:12:14,826 INFO L290 TraceCheckUtils]: 2: Hoare triple {906#true} assume true; {906#true} is VALID [2022-04-15 09:12:14,826 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {906#true} {906#true} #54#return; {906#true} is VALID [2022-04-15 09:12:14,826 INFO L272 TraceCheckUtils]: 4: Hoare triple {906#true} call #t~ret8 := main(); {906#true} is VALID [2022-04-15 09:12:14,826 INFO L290 TraceCheckUtils]: 5: Hoare triple {906#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {906#true} is VALID [2022-04-15 09:12:14,826 INFO L290 TraceCheckUtils]: 6: Hoare triple {906#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {906#true} is VALID [2022-04-15 09:12:14,827 INFO L290 TraceCheckUtils]: 7: Hoare triple {906#true} assume !!(#t~post7 < 1);havoc #t~post7; {906#true} is VALID [2022-04-15 09:12:14,827 INFO L272 TraceCheckUtils]: 8: Hoare triple {906#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {906#true} is VALID [2022-04-15 09:12:14,827 INFO L290 TraceCheckUtils]: 9: Hoare triple {906#true} ~cond := #in~cond; {938#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-15 09:12:14,828 INFO L290 TraceCheckUtils]: 10: Hoare triple {938#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {942#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:12:14,828 INFO L290 TraceCheckUtils]: 11: Hoare triple {942#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {942#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:12:14,829 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {942#(not (= |__VERIFIER_assert_#in~cond| 0))} {906#true} #50#return; {949#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-15 09:12:16,831 WARN L290 TraceCheckUtils]: 13: Hoare triple {949#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {953#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is UNKNOWN [2022-04-15 09:12:16,833 INFO L290 TraceCheckUtils]: 14: Hoare triple {953#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {953#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-15 09:12:16,834 INFO L290 TraceCheckUtils]: 15: Hoare triple {953#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} assume !!(#t~post7 < 1);havoc #t~post7; {953#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-15 09:12:16,834 INFO L272 TraceCheckUtils]: 16: Hoare triple {953#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {906#true} is VALID [2022-04-15 09:12:16,835 INFO L290 TraceCheckUtils]: 17: Hoare triple {906#true} ~cond := #in~cond; {938#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-15 09:12:16,835 INFO L290 TraceCheckUtils]: 18: Hoare triple {938#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {942#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:12:16,836 INFO L290 TraceCheckUtils]: 19: Hoare triple {942#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {942#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:12:16,836 INFO L284 TraceCheckUtils]: 20: Hoare quadruple {942#(not (= |__VERIFIER_assert_#in~cond| 0))} {953#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} #50#return; {953#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-15 09:12:18,838 WARN L290 TraceCheckUtils]: 21: Hoare triple {953#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {978#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is UNKNOWN [2022-04-15 09:12:18,840 INFO L290 TraceCheckUtils]: 22: Hoare triple {978#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {978#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-15 09:12:18,841 INFO L290 TraceCheckUtils]: 23: Hoare triple {978#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} assume !(#t~post7 < 1);havoc #t~post7; {978#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-15 09:12:18,894 INFO L272 TraceCheckUtils]: 24: Hoare triple {978#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {988#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 09:12:18,895 INFO L290 TraceCheckUtils]: 25: Hoare triple {988#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {992#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 09:12:18,895 INFO L290 TraceCheckUtils]: 26: Hoare triple {992#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {907#false} is VALID [2022-04-15 09:12:18,895 INFO L290 TraceCheckUtils]: 27: Hoare triple {907#false} assume !false; {907#false} is VALID [2022-04-15 09:12:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 09:12:18,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 09:12:47,356 INFO L290 TraceCheckUtils]: 27: Hoare triple {907#false} assume !false; {907#false} is VALID [2022-04-15 09:12:47,357 INFO L290 TraceCheckUtils]: 26: Hoare triple {992#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {907#false} is VALID [2022-04-15 09:12:47,357 INFO L290 TraceCheckUtils]: 25: Hoare triple {988#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {992#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 09:12:47,358 INFO L272 TraceCheckUtils]: 24: Hoare triple {949#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {988#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 09:12:47,359 INFO L290 TraceCheckUtils]: 23: Hoare triple {949#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !(#t~post7 < 1);havoc #t~post7; {949#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-15 09:12:47,359 INFO L290 TraceCheckUtils]: 22: Hoare triple {949#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {949#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-15 09:12:47,478 INFO L290 TraceCheckUtils]: 21: Hoare triple {1017#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {949#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-15 09:12:47,483 INFO L284 TraceCheckUtils]: 20: Hoare quadruple {942#(not (= |__VERIFIER_assert_#in~cond| 0))} {906#true} #50#return; {1017#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} is VALID [2022-04-15 09:12:47,483 INFO L290 TraceCheckUtils]: 19: Hoare triple {942#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {942#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:12:47,484 INFO L290 TraceCheckUtils]: 18: Hoare triple {1030#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {942#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-15 09:12:47,484 INFO L290 TraceCheckUtils]: 17: Hoare triple {906#true} ~cond := #in~cond; {1030#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-15 09:12:47,484 INFO L272 TraceCheckUtils]: 16: Hoare triple {906#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {906#true} is VALID [2022-04-15 09:12:47,484 INFO L290 TraceCheckUtils]: 15: Hoare triple {906#true} assume !!(#t~post7 < 1);havoc #t~post7; {906#true} is VALID [2022-04-15 09:12:47,484 INFO L290 TraceCheckUtils]: 14: Hoare triple {906#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {906#true} is VALID [2022-04-15 09:12:47,485 INFO L290 TraceCheckUtils]: 13: Hoare triple {906#true} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {906#true} is VALID [2022-04-15 09:12:47,485 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {906#true} {906#true} #50#return; {906#true} is VALID [2022-04-15 09:12:47,485 INFO L290 TraceCheckUtils]: 11: Hoare triple {906#true} assume true; {906#true} is VALID [2022-04-15 09:12:47,485 INFO L290 TraceCheckUtils]: 10: Hoare triple {906#true} assume !(0 == ~cond); {906#true} is VALID [2022-04-15 09:12:47,485 INFO L290 TraceCheckUtils]: 9: Hoare triple {906#true} ~cond := #in~cond; {906#true} is VALID [2022-04-15 09:12:47,485 INFO L272 TraceCheckUtils]: 8: Hoare triple {906#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {906#true} is VALID [2022-04-15 09:12:47,486 INFO L290 TraceCheckUtils]: 7: Hoare triple {906#true} assume !!(#t~post7 < 1);havoc #t~post7; {906#true} is VALID [2022-04-15 09:12:47,486 INFO L290 TraceCheckUtils]: 6: Hoare triple {906#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {906#true} is VALID [2022-04-15 09:12:47,486 INFO L290 TraceCheckUtils]: 5: Hoare triple {906#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {906#true} is VALID [2022-04-15 09:12:47,486 INFO L272 TraceCheckUtils]: 4: Hoare triple {906#true} call #t~ret8 := main(); {906#true} is VALID [2022-04-15 09:12:47,486 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {906#true} {906#true} #54#return; {906#true} is VALID [2022-04-15 09:12:47,486 INFO L290 TraceCheckUtils]: 2: Hoare triple {906#true} assume true; {906#true} is VALID [2022-04-15 09:12:47,487 INFO L290 TraceCheckUtils]: 1: Hoare triple {906#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(10, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {906#true} is VALID [2022-04-15 09:12:47,487 INFO L272 TraceCheckUtils]: 0: Hoare triple {906#true} call ULTIMATE.init(); {906#true} is VALID [2022-04-15 09:12:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-15 09:12:47,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 09:12:47,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070692793] [2022-04-15 09:12:47,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 09:12:47,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921064503] [2022-04-15 09:12:47,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921064503] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-15 09:12:47,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-15 09:12:47,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2022-04-15 09:12:47,488 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 09:12:47,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2140120349] [2022-04-15 09:12:47,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2140120349] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 09:12:47,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 09:12:47,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-15 09:12:47,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535231652] [2022-04-15 09:12:47,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 09:12:47,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-04-15 09:12:47,489 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 09:12:47,489 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 09:12:51,762 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 23 inductive. 0 not inductive. 2 times theorem prover too weak to decide inductivity. [2022-04-15 09:12:51,762 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-15 09:12:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 09:12:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-15 09:12:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-15 09:12:51,763 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 09:12:54,041 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 [] [2022-04-15 09:12:56,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-15 09:12:59,472 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-15 09:13:02,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:13:02,369 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-15 09:13:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-15 09:13:02,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-04-15 09:13:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 09:13:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 09:13:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 29 transitions. [2022-04-15 09:13:02,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 09:13:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 29 transitions. [2022-04-15 09:13:02,373 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 29 transitions. [2022-04-15 09:13:10,724 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 25 inductive. 0 not inductive. 4 times theorem prover too weak to decide inductivity. [2022-04-15 09:13:10,724 INFO L225 Difference]: With dead ends: 33 [2022-04-15 09:13:10,724 INFO L226 Difference]: Without dead ends: 0 [2022-04-15 09:13:10,724 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-15 09:13:10,725 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-04-15 09:13:10,725 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 91 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-04-15 09:13:10,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-15 09:13:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-15 09:13:10,726 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 09:13:10,726 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 09:13:10,726 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 09:13:10,726 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 09:13:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:13:10,726 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 09:13:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 09:13:10,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:13:10,727 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:13:10,727 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 09:13:10,727 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 09:13:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 09:13:10,727 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 09:13:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 09:13:10,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:13:10,727 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 09:13:10,727 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 09:13:10,728 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 09:13:10,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 09:13:10,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-15 09:13:10,728 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-04-15 09:13:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 09:13:10,728 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-15 09:13:10,728 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 09:13:10,728 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-15 09:13:10,728 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 09:13:10,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 09:13:10,729 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 09:13:10,731 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-15 09:13:10,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-15 09:13:10,937 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 09:13:10,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-15 09:13:16,753 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-15 09:13:16,753 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-15 09:13:16,753 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-15 09:13:16,753 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 11 13) no Hoare annotation was computed. [2022-04-15 09:13:16,753 INFO L882 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-04-15 09:13:16,753 INFO L882 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-04-15 09:13:16,753 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-04-15 09:13:16,753 INFO L878 garLoopResultBuilder]: At program point L34-1(lines 34 43) the Hoare annotation is: (let ((.cse7 (* main_~a~0 main_~z~0))) (let ((.cse5 (= main_~z~0 0)) (.cse0 (= .cse7 main_~az~0))) (or (and (= main_~y~0 1) (<= |main_#t~post7| 0) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) .cse0) (let ((.cse6 (* (- 1) main_~a~0))) (let ((.cse1 (+ .cse6 main_~x~0))) (let ((.cse2 (div main_~y~0 main_~z~0)) (.cse3 (+ (div .cse1 main_~z~0) .cse6))) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod .cse1 main_~z~0)) (= (mod .cse2 main_~z~0) 0) (= (mod .cse3 main_~z~0) 0) (let ((.cse4 (div .cse3 main_~z~0))) (= (+ (* (div .cse2 main_~z~0) main_~az~0) .cse4) (+ main_~a~0 (* main_~z~0 .cse4)))) (not .cse5))))) (not (<= |old(~counter~0)| 0)) (and .cse5 (= main_~y~0 0) (= main_~a~0 main_~x~0)) (and (= main_~z~0 main_~y~0) (= main_~x~0 (+ .cse7 main_~a~0)) .cse0)))) [2022-04-15 09:13:16,754 INFO L878 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (let ((.cse6 (* main_~a~0 main_~z~0))) (let ((.cse4 (= main_~z~0 0)) (.cse7 (= .cse6 main_~az~0))) (or (let ((.cse5 (* (- 1) main_~a~0))) (let ((.cse0 (+ .cse5 main_~x~0))) (let ((.cse1 (div main_~y~0 main_~z~0)) (.cse2 (+ (div .cse0 main_~z~0) .cse5))) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod .cse0 main_~z~0)) (= (mod .cse1 main_~z~0) 0) (= (mod .cse2 main_~z~0) 0) (let ((.cse3 (div .cse2 main_~z~0))) (= (+ (* (div .cse1 main_~z~0) main_~az~0) .cse3) (+ main_~a~0 (* main_~z~0 .cse3)))) (not .cse4))))) (not (<= |old(~counter~0)| 0)) (and .cse4 (= main_~y~0 0) (= main_~a~0 main_~x~0)) (and (= main_~z~0 main_~y~0) (= main_~x~0 (+ .cse6 main_~a~0)) .cse7) (and (= main_~y~0 1) (<= ~counter~0 0) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) .cse7)))) [2022-04-15 09:13:16,754 INFO L878 garLoopResultBuilder]: At program point L34-4(lines 34 43) the Hoare annotation is: (let ((.cse8 (* main_~a~0 main_~z~0))) (let ((.cse6 (= main_~z~0 0)) (.cse0 (= main_~a~0 main_~x~0)) (.cse1 (= .cse8 main_~az~0))) (or (and (= main_~y~0 1) .cse0 .cse1) (let ((.cse7 (* (- 1) main_~a~0))) (let ((.cse2 (+ .cse7 main_~x~0))) (let ((.cse3 (div main_~y~0 main_~z~0)) (.cse4 (+ (div .cse2 main_~z~0) .cse7))) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod .cse2 main_~z~0)) (= (mod .cse3 main_~z~0) 0) (= (mod .cse4 main_~z~0) 0) (let ((.cse5 (div .cse4 main_~z~0))) (= (+ (* (div .cse3 main_~z~0) main_~az~0) .cse5) (+ main_~a~0 (* main_~z~0 .cse5)))) (not .cse6))))) (not (<= |old(~counter~0)| 0)) (and .cse6 (= main_~y~0 0) .cse0) (and (= main_~z~0 main_~y~0) (= main_~x~0 (+ .cse8 main_~a~0)) .cse1)))) [2022-04-15 09:13:16,754 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 22 46) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (<= ~counter~0 0)) [2022-04-15 09:13:16,754 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 46) the Hoare annotation is: true [2022-04-15 09:13:16,754 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 46) the Hoare annotation is: true [2022-04-15 09:13:16,754 INFO L885 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: true [2022-04-15 09:13:16,754 INFO L878 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse7 (* main_~a~0 main_~z~0))) (let ((.cse5 (= main_~z~0 0)) (.cse0 (= .cse7 main_~az~0))) (or (and (= main_~y~0 1) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) .cse0) (let ((.cse6 (* (- 1) main_~a~0))) (let ((.cse1 (+ .cse6 main_~x~0))) (let ((.cse2 (div main_~y~0 main_~z~0)) (.cse3 (+ (div .cse1 main_~z~0) .cse6))) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod .cse1 main_~z~0)) (= (mod .cse2 main_~z~0) 0) (= (mod .cse3 main_~z~0) 0) (let ((.cse4 (div .cse3 main_~z~0))) (= (+ (* (div .cse2 main_~z~0) main_~az~0) .cse4) (+ main_~a~0 (* main_~z~0 .cse4)))) (not .cse5))))) (not (<= |old(~counter~0)| 0)) (and .cse5 (= main_~y~0 0) (= main_~a~0 main_~x~0)) (and (= main_~z~0 main_~y~0) (= main_~x~0 (+ .cse7 main_~a~0)) .cse0)))) [2022-04-15 09:13:16,754 INFO L878 garLoopResultBuilder]: At program point L35-1(lines 34 43) the Hoare annotation is: (let ((.cse7 (* main_~a~0 main_~z~0))) (let ((.cse5 (= main_~z~0 0)) (.cse0 (= .cse7 main_~az~0))) (or (and (= main_~y~0 1) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) .cse0) (let ((.cse6 (* (- 1) main_~a~0))) (let ((.cse1 (+ .cse6 main_~x~0))) (let ((.cse2 (div main_~y~0 main_~z~0)) (.cse3 (+ (div .cse1 main_~z~0) .cse6))) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod .cse1 main_~z~0)) (= (mod .cse2 main_~z~0) 0) (= (mod .cse3 main_~z~0) 0) (let ((.cse4 (div .cse3 main_~z~0))) (= (+ (* (div .cse2 main_~z~0) main_~az~0) .cse4) (+ main_~a~0 (* main_~z~0 .cse4)))) (not .cse5))))) (not (<= |old(~counter~0)| 0)) (and .cse5 (= main_~y~0 0) (= main_~a~0 main_~x~0)) (and (= main_~z~0 main_~y~0) (= main_~x~0 (+ .cse7 main_~a~0)) .cse0)))) [2022-04-15 09:13:16,754 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-15 09:13:16,754 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2022-04-15 09:13:16,755 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-15 09:13:16,755 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-15 09:13:16,755 INFO L878 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-15 09:13:16,755 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-15 09:13:16,755 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-15 09:13:16,755 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-15 09:13:16,755 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-15 09:13:16,755 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-15 09:13:16,755 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-15 09:13:16,755 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-15 09:13:16,755 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-15 09:13:16,757 INFO L719 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2] [2022-04-15 09:13:16,758 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-15 09:13:16,761 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 09:13:16,761 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-15 09:13:16,779 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-15 09:13:16,780 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-15 09:13:16,780 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-15 09:13:16,783 WARN L170 areAnnotationChecker]: L12-2 has no Hoare annotation [2022-04-15 09:13:18,803 INFO L163 areAnnotationChecker]: CFG has 26 edges. 25 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-15 09:13:18,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 09:13:18 BoogieIcfgContainer [2022-04-15 09:13:18,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-15 09:13:18,815 INFO L158 Benchmark]: Toolchain (without parser) took 187829.80ms. Allocated memory was 199.2MB in the beginning and 241.2MB in the end (delta: 41.9MB). Free memory was 150.8MB in the beginning and 86.5MB in the end (delta: 64.3MB). Peak memory consumption was 107.8MB. Max. memory is 8.0GB. [2022-04-15 09:13:18,817 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 199.2MB. Free memory is still 167.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 09:13:18,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.43ms. Allocated memory is still 199.2MB. Free memory was 150.5MB in the beginning and 176.8MB in the end (delta: -26.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-15 09:13:18,818 INFO L158 Benchmark]: Boogie Preprocessor took 23.17ms. Allocated memory is still 199.2MB. Free memory was 176.8MB in the beginning and 175.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-15 09:13:18,818 INFO L158 Benchmark]: RCFGBuilder took 264.30ms. Allocated memory is still 199.2MB. Free memory was 175.2MB in the beginning and 164.3MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-15 09:13:18,818 INFO L158 Benchmark]: TraceAbstraction took 187298.74ms. Allocated memory was 199.2MB in the beginning and 241.2MB in the end (delta: 41.9MB). Free memory was 163.7MB in the beginning and 86.5MB in the end (delta: 77.3MB). Peak memory consumption was 120.6MB. Max. memory is 8.0GB. [2022-04-15 09:13:18,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 199.2MB. Free memory is still 167.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.43ms. Allocated memory is still 199.2MB. Free memory was 150.5MB in the beginning and 176.8MB in the end (delta: -26.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.17ms. Allocated memory is still 199.2MB. Free memory was 176.8MB in the beginning and 175.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 264.30ms. Allocated memory is still 199.2MB. Free memory was 175.2MB in the beginning and 164.3MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 187298.74ms. Allocated memory was 199.2MB in the beginning and 241.2MB in the end (delta: 41.9MB). Free memory was 163.7MB in the beginning and 86.5MB in the end (delta: 77.3MB). Peak memory consumption was 120.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 185.2s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 9.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 309 SdHoareTripleChecker+Invalid, 9.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 216 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 93 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 70 PreInvPairs, 112 NumberOfFragments, 710 HoareAnnotationTreeSize, 70 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 336 FormulaSimplificationTreeSizeReductionInter, 5.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((y % z == 0 && 0 == (-1 * a + x) % z) && y / z % z == 0) && ((-1 * a + x) / z + -1 * a) % z == 0) && y / z / z * az + ((-1 * a + x) / z + -1 * a) / z == a + z * (((-1 * a + x) / z + -1 * a) / z)) && !(z == 0)) || !(\old(counter) <= 0)) || ((z == 0 && y == 0) && a == x)) || ((z == y && x == a * z + a) && a * z == az)) || (((y == 1 && counter <= 0) && y * az + x == z * x + a) && a * z == az) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-15 09:13:18,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...