/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 13:21:32,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 13:21:32,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 13:21:32,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-27 13:21:32,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-27 13:21:32,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-27 13:21:32,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-27 13:21:32,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-27 13:21:32,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-27 13:21:32,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-27 13:21:32,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-27 13:21:32,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-27 13:21:32,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 13:21:32,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 13:21:32,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 13:21:32,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 13:21:32,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 13:21:32,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 13:21:32,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 13:21:32,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 13:21:32,979 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 13:21:32,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 13:21:32,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 13:21:32,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 13:21:32,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 13:21:32,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-27 13:21:32,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 13:21:33,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 13:21:33,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 13:21:33,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-04-27 13:21:33,036 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 13:21:33,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 13:21:33,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-27 13:21:33,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-27 13:21:33,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-27 13:21:33,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-27 13:21:33,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-27 13:21:33,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-27 13:21:33,038 INFO L138 SettingsManager]: * Use SBE=true [2022-04-27 13:21:33,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 13:21:33,038 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 13:21:33,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 13:21:33,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 13:21:33,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 13:21:33,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 13:21:33,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 13:21:33,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 13:21:33,039 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 13:21:33,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 13:21:33,039 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 13:21:33,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 13:21:33,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 13:21:33,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 13:21:33,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 13:21:33,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 13:21:33,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 13:21:33,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-27 13:21:33,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-27 13:21:33,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 13:21:33,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-27 13:21:33,040 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-04-27 13:21:33,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-27 13:21:33,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-27 13:21:33,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 13:21:33,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 13:21:33,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 13:21:33,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 13:21:33,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 13:21:33,317 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 13:21:33,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound2.c [2022-04-27 13:21:33,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7beb91f0d/b12097773f44433c9a6fcf5394668a5c/FLAG8326fca3c [2022-04-27 13:21:33,711 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 13:21:33,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound2.c [2022-04-27 13:21:33,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7beb91f0d/b12097773f44433c9a6fcf5394668a5c/FLAG8326fca3c [2022-04-27 13:21:34,145 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7beb91f0d/b12097773f44433c9a6fcf5394668a5c [2022-04-27 13:21:34,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 13:21:34,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-27 13:21:34,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 13:21:34,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 13:21:34,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 13:21:34,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b0ba0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34, skipping insertion in model container [2022-04-27 13:21:34,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 13:21:34,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 13:21:34,305 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_unwindbound2.c[525,538] [2022-04-27 13:21:34,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 13:21:34,338 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 13:21:34,349 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_unwindbound2.c[525,538] [2022-04-27 13:21:34,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 13:21:34,369 INFO L208 MainTranslator]: Completed translation [2022-04-27 13:21:34,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34 WrapperNode [2022-04-27 13:21:34,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 13:21:34,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 13:21:34,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 13:21:34,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 13:21:34,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 13:21:34,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 13:21:34,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 13:21:34,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 13:21:34,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34" (1/1) ... [2022-04-27 13:21:34,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 13:21:34,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:34,425 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) [2022-04-27 13:21:34,426 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 [2022-04-27 13:21:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 13:21:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 13:21:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 13:21:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 13:21:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 13:21:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 13:21:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 13:21:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 13:21:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 13:21:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 13:21:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-27 13:21:34,457 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 13:21:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 13:21:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 13:21:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 13:21:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 13:21:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 13:21:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 13:21:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 13:21:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 13:21:34,508 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 13:21:34,509 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 13:21:34,682 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 13:21:34,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 13:21:34,688 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 13:21:34,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 01:21:34 BoogieIcfgContainer [2022-04-27 13:21:34,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 13:21:34,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 13:21:34,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 13:21:34,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 13:21:34,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 01:21:34" (1/3) ... [2022-04-27 13:21:34,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72103d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 01:21:34, skipping insertion in model container [2022-04-27 13:21:34,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:34" (2/3) ... [2022-04-27 13:21:34,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72103d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 01:21:34, skipping insertion in model container [2022-04-27 13:21:34,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 01:21:34" (3/3) ... [2022-04-27 13:21:34,704 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound2.c [2022-04-27 13:21:34,713 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-27 13:21:34,713 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 13:21:34,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 13:21:34,754 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@32b31e9b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@429c1067 [2022-04-27 13:21:34,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 13:21:34,761 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) [2022-04-27 13:21:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-27 13:21:34,766 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:21:34,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 13:21:34,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:21:34,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:21:34,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 1 times [2022-04-27 13:21:34,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:21:34,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372361024] [2022-04-27 13:21:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:34,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:21:34,867 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:21:34,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83717442] [2022-04-27 13:21:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:34,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:34,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:34,872 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) [2022-04-27 13:21:34,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-27 13:21:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:34,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-27 13:21:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:34,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:21:35,048 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {25#true} is VALID [2022-04-27 13:21:35,048 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 [2022-04-27 13:21:35,048 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-27 13:21:35,048 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} #54#return; {25#true} is VALID [2022-04-27 13:21:35,049 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} call #t~ret8 := main(); {25#true} is VALID [2022-04-27 13:21:35,049 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 [2022-04-27 13:21:35,050 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} assume !true; {26#false} is VALID [2022-04-27 13:21:35,050 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 [2022-04-27 13:21:35,050 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-04-27 13:21:35,050 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2022-04-27 13:21:35,050 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-04-27 13:21:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 13:21:35,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 13:21:35,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:21:35,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372361024] [2022-04-27 13:21:35,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:21:35,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83717442] [2022-04-27 13:21:35,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83717442] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 13:21:35,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 13:21:35,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-27 13:21:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421806735] [2022-04-27 13:21:35,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 13:21:35,059 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 [2022-04-27 13:21:35,060 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:21:35,063 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) [2022-04-27 13:21:35,082 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:35,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-27 13:21:35,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:21:35,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-27 13:21:35,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-27 13:21:35,108 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) [2022-04-27 13:21:35,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:35,152 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-04-27 13:21:35,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-27 13:21:35,152 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 [2022-04-27 13:21:35,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:21:35,153 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) [2022-04-27 13:21:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2022-04-27 13:21:35,159 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) [2022-04-27 13:21:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2022-04-27 13:21:35,163 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 2 states and 48 transitions. [2022-04-27 13:21:35,211 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:35,217 INFO L225 Difference]: With dead ends: 38 [2022-04-27 13:21:35,218 INFO L226 Difference]: Without dead ends: 17 [2022-04-27 13:21:35,220 INFO L412 NwaCegarLoop]: 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 [2022-04-27 13:21:35,223 INFO L413 NwaCegarLoop]: 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 [2022-04-27 13:21:35,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 13:21:35,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-27 13:21:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-27 13:21:35,246 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:21:35,246 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) [2022-04-27 13:21:35,247 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) [2022-04-27 13:21:35,247 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) [2022-04-27 13:21:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:35,250 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-27 13:21:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-27 13:21:35,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:35,250 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:35,251 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. [2022-04-27 13:21:35,251 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. [2022-04-27 13:21:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:35,253 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-27 13:21:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-27 13:21:35,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:35,253 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:35,254 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:21:35,254 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:21:35,254 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) [2022-04-27 13:21:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-27 13:21:35,256 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-27 13:21:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:21:35,257 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-27 13:21:35,257 INFO L496 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) [2022-04-27 13:21:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-27 13:21:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 13:21:35,258 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:21:35,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 13:21:35,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-27 13:21:35,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-27 13:21:35,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:21:35,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:21:35,482 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 1 times [2022-04-27 13:21:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:21:35,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068616668] [2022-04-27 13:21:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:35,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:21:35,500 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:21:35,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987004751] [2022-04-27 13:21:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:35,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:35,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:35,506 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) [2022-04-27 13:21:35,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-27 13:21:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:35,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-27 13:21:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:35,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:21:35,720 INFO L272 TraceCheckUtils]: 0: Hoare triple {168#true} call ULTIMATE.init(); {168#true} is VALID [2022-04-27 13:21:35,721 INFO L290 TraceCheckUtils]: 1: Hoare triple {168#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; {176#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:35,722 INFO L290 TraceCheckUtils]: 2: Hoare triple {176#(<= ~counter~0 0)} assume true; {176#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:35,722 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {176#(<= ~counter~0 0)} {168#true} #54#return; {176#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:35,723 INFO L272 TraceCheckUtils]: 4: Hoare triple {176#(<= ~counter~0 0)} call #t~ret8 := main(); {176#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:35,723 INFO L290 TraceCheckUtils]: 5: Hoare triple {176#(<= ~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; {176#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:35,724 INFO L290 TraceCheckUtils]: 6: Hoare triple {176#(<= ~counter~0 0)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {192#(<= |main_#t~post7| 0)} is VALID [2022-04-27 13:21:35,724 INFO L290 TraceCheckUtils]: 7: Hoare triple {192#(<= |main_#t~post7| 0)} assume !(#t~post7 < 2);havoc #t~post7; {169#false} is VALID [2022-04-27 13:21:35,725 INFO L272 TraceCheckUtils]: 8: Hoare triple {169#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {169#false} is VALID [2022-04-27 13:21:35,725 INFO L290 TraceCheckUtils]: 9: Hoare triple {169#false} ~cond := #in~cond; {169#false} is VALID [2022-04-27 13:21:35,725 INFO L290 TraceCheckUtils]: 10: Hoare triple {169#false} assume 0 == ~cond; {169#false} is VALID [2022-04-27 13:21:35,725 INFO L290 TraceCheckUtils]: 11: Hoare triple {169#false} assume !false; {169#false} is VALID [2022-04-27 13:21:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 13:21:35,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 13:21:35,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:21:35,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068616668] [2022-04-27 13:21:35,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:21:35,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987004751] [2022-04-27 13:21:35,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987004751] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 13:21:35,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 13:21:35,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-27 13:21:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295690605] [2022-04-27 13:21:35,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 13:21:35,729 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 [2022-04-27 13:21:35,729 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:21:35,729 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) [2022-04-27 13:21:35,745 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:35,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-27 13:21:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:21:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-27 13:21:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 13:21:35,746 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) [2022-04-27 13:21:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:35,798 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-27 13:21:35,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-27 13:21:35,798 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 [2022-04-27 13:21:35,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:21:35,800 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) [2022-04-27 13:21:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-27 13:21:35,805 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) [2022-04-27 13:21:35,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-27 13:21:35,814 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 28 transitions. [2022-04-27 13:21:35,840 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:35,842 INFO L225 Difference]: With dead ends: 26 [2022-04-27 13:21:35,842 INFO L226 Difference]: Without dead ends: 19 [2022-04-27 13:21:35,843 INFO L412 NwaCegarLoop]: 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 [2022-04-27 13:21:35,845 INFO L413 NwaCegarLoop]: 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 [2022-04-27 13:21:35,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 13:21:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-27 13:21:35,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-27 13:21:35,854 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:21:35,854 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) [2022-04-27 13:21:35,855 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) [2022-04-27 13:21:35,856 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) [2022-04-27 13:21:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:35,859 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-27 13:21:35,859 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 13:21:35,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:35,860 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:35,861 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. [2022-04-27 13:21:35,861 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. [2022-04-27 13:21:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:35,864 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-27 13:21:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 13:21:35,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:35,865 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:35,865 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:21:35,865 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:21:35,866 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) [2022-04-27 13:21:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-27 13:21:35,868 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-27 13:21:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:21:35,868 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-27 13:21:35,868 INFO L496 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) [2022-04-27 13:21:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 13:21:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 13:21:35,869 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:21:35,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 13:21:35,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-27 13:21:36,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-04-27 13:21:36,084 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:21:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:21:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 1 times [2022-04-27 13:21:36,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:21:36,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723568907] [2022-04-27 13:21:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:36,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:21:36,103 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:21:36,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492270362] [2022-04-27 13:21:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:36,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:36,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:36,112 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) [2022-04-27 13:21:36,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-27 13:21:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:36,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-27 13:21:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:36,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:21:36,268 INFO L272 TraceCheckUtils]: 0: Hoare triple {310#true} call ULTIMATE.init(); {310#true} is VALID [2022-04-27 13:21:36,268 INFO L290 TraceCheckUtils]: 1: Hoare triple {310#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; {310#true} is VALID [2022-04-27 13:21:36,268 INFO L290 TraceCheckUtils]: 2: Hoare triple {310#true} assume true; {310#true} is VALID [2022-04-27 13:21:36,268 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {310#true} {310#true} #54#return; {310#true} is VALID [2022-04-27 13:21:36,269 INFO L272 TraceCheckUtils]: 4: Hoare triple {310#true} call #t~ret8 := main(); {310#true} is VALID [2022-04-27 13:21:36,270 INFO L290 TraceCheckUtils]: 5: Hoare triple {310#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; {330#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-27 13:21:36,270 INFO L290 TraceCheckUtils]: 6: Hoare triple {330#(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; {330#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-27 13:21:36,271 INFO L290 TraceCheckUtils]: 7: Hoare triple {330#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(#t~post7 < 2);havoc #t~post7; {330#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-27 13:21:36,272 INFO L272 TraceCheckUtils]: 8: Hoare triple {330#(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)); {340#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 13:21:36,273 INFO L290 TraceCheckUtils]: 9: Hoare triple {340#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {344#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:21:36,286 INFO L290 TraceCheckUtils]: 10: Hoare triple {344#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {311#false} is VALID [2022-04-27 13:21:36,286 INFO L290 TraceCheckUtils]: 11: Hoare triple {311#false} assume !false; {311#false} is VALID [2022-04-27 13:21:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 13:21:36,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 13:21:36,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:21:36,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723568907] [2022-04-27 13:21:36,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:21:36,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492270362] [2022-04-27 13:21:36,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492270362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 13:21:36,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 13:21:36,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-27 13:21:36,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371833231] [2022-04-27 13:21:36,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 13:21:36,288 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 [2022-04-27 13:21:36,289 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:21:36,289 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) [2022-04-27 13:21:36,301 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:36,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 13:21:36,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:21:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 13:21:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-27 13:21:36,302 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) [2022-04-27 13:21:36,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:36,397 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-04-27 13:21:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 13:21:36,398 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 [2022-04-27 13:21:36,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:21:36,398 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) [2022-04-27 13:21:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-27 13:21:36,400 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) [2022-04-27 13:21:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-27 13:21:36,402 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 31 transitions. [2022-04-27 13:21:36,430 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:36,431 INFO L225 Difference]: With dead ends: 28 [2022-04-27 13:21:36,431 INFO L226 Difference]: Without dead ends: 25 [2022-04-27 13:21:36,432 INFO L412 NwaCegarLoop]: 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 [2022-04-27 13:21:36,432 INFO L413 NwaCegarLoop]: 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 [2022-04-27 13:21:36,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 13:21:36,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-27 13:21:36,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-27 13:21:36,446 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:21:36,447 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) [2022-04-27 13:21:36,447 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) [2022-04-27 13:21:36,447 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) [2022-04-27 13:21:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:36,449 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-27 13:21:36,449 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 13:21:36,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:36,450 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:36,450 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. [2022-04-27 13:21:36,450 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. [2022-04-27 13:21:36,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:36,452 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-27 13:21:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 13:21:36,452 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:36,453 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:36,453 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:21:36,453 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:21:36,453 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) [2022-04-27 13:21:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-27 13:21:36,454 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-27 13:21:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:21:36,455 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-27 13:21:36,455 INFO L496 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) [2022-04-27 13:21:36,455 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 13:21:36,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-27 13:21:36,456 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:21:36,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 13:21:36,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-27 13:21:36,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:36,680 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:21:36,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:21:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2089867248, now seen corresponding path program 1 times [2022-04-27 13:21:36,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:21:36,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946554623] [2022-04-27 13:21:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:21:36,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:21:36,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689856460] [2022-04-27 13:21:36,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:36,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:36,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:36,701 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) [2022-04-27 13:21:36,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-27 13:21:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:36,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-27 13:21:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:36,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:21:36,911 INFO L272 TraceCheckUtils]: 0: Hoare triple {478#true} call ULTIMATE.init(); {478#true} is VALID [2022-04-27 13:21:36,912 INFO L290 TraceCheckUtils]: 1: Hoare triple {478#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; {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:36,913 INFO L290 TraceCheckUtils]: 2: Hoare triple {486#(<= ~counter~0 0)} assume true; {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:36,913 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {486#(<= ~counter~0 0)} {478#true} #54#return; {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:36,914 INFO L272 TraceCheckUtils]: 4: Hoare triple {486#(<= ~counter~0 0)} call #t~ret8 := main(); {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:36,914 INFO L290 TraceCheckUtils]: 5: Hoare triple {486#(<= ~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; {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:36,915 INFO L290 TraceCheckUtils]: 6: Hoare triple {486#(<= ~counter~0 0)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:36,915 INFO L290 TraceCheckUtils]: 7: Hoare triple {502#(<= ~counter~0 1)} assume !!(#t~post7 < 2);havoc #t~post7; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:36,917 INFO L272 TraceCheckUtils]: 8: Hoare triple {502#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:36,917 INFO L290 TraceCheckUtils]: 9: Hoare triple {502#(<= ~counter~0 1)} ~cond := #in~cond; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:36,917 INFO L290 TraceCheckUtils]: 10: Hoare triple {502#(<= ~counter~0 1)} assume !(0 == ~cond); {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:36,918 INFO L290 TraceCheckUtils]: 11: Hoare triple {502#(<= ~counter~0 1)} assume true; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:36,919 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {502#(<= ~counter~0 1)} {502#(<= ~counter~0 1)} #50#return; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:36,919 INFO L290 TraceCheckUtils]: 13: Hoare triple {502#(<= ~counter~0 1)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:36,923 INFO L290 TraceCheckUtils]: 14: Hoare triple {502#(<= ~counter~0 1)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {527#(<= |main_#t~post7| 1)} is VALID [2022-04-27 13:21:36,924 INFO L290 TraceCheckUtils]: 15: Hoare triple {527#(<= |main_#t~post7| 1)} assume !(#t~post7 < 2);havoc #t~post7; {479#false} is VALID [2022-04-27 13:21:36,924 INFO L272 TraceCheckUtils]: 16: Hoare triple {479#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {479#false} is VALID [2022-04-27 13:21:36,924 INFO L290 TraceCheckUtils]: 17: Hoare triple {479#false} ~cond := #in~cond; {479#false} is VALID [2022-04-27 13:21:36,924 INFO L290 TraceCheckUtils]: 18: Hoare triple {479#false} assume 0 == ~cond; {479#false} is VALID [2022-04-27 13:21:36,924 INFO L290 TraceCheckUtils]: 19: Hoare triple {479#false} assume !false; {479#false} is VALID [2022-04-27 13:21:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 13:21:36,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 13:21:37,066 INFO L290 TraceCheckUtils]: 19: Hoare triple {479#false} assume !false; {479#false} is VALID [2022-04-27 13:21:37,066 INFO L290 TraceCheckUtils]: 18: Hoare triple {479#false} assume 0 == ~cond; {479#false} is VALID [2022-04-27 13:21:37,066 INFO L290 TraceCheckUtils]: 17: Hoare triple {479#false} ~cond := #in~cond; {479#false} is VALID [2022-04-27 13:21:37,066 INFO L272 TraceCheckUtils]: 16: Hoare triple {479#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {479#false} is VALID [2022-04-27 13:21:37,067 INFO L290 TraceCheckUtils]: 15: Hoare triple {527#(<= |main_#t~post7| 1)} assume !(#t~post7 < 2);havoc #t~post7; {479#false} is VALID [2022-04-27 13:21:37,068 INFO L290 TraceCheckUtils]: 14: Hoare triple {502#(<= ~counter~0 1)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {527#(<= |main_#t~post7| 1)} is VALID [2022-04-27 13:21:37,068 INFO L290 TraceCheckUtils]: 13: Hoare triple {502#(<= ~counter~0 1)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:37,069 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {478#true} {502#(<= ~counter~0 1)} #50#return; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:37,069 INFO L290 TraceCheckUtils]: 11: Hoare triple {478#true} assume true; {478#true} is VALID [2022-04-27 13:21:37,069 INFO L290 TraceCheckUtils]: 10: Hoare triple {478#true} assume !(0 == ~cond); {478#true} is VALID [2022-04-27 13:21:37,069 INFO L290 TraceCheckUtils]: 9: Hoare triple {478#true} ~cond := #in~cond; {478#true} is VALID [2022-04-27 13:21:37,070 INFO L272 TraceCheckUtils]: 8: Hoare triple {502#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {478#true} is VALID [2022-04-27 13:21:37,070 INFO L290 TraceCheckUtils]: 7: Hoare triple {502#(<= ~counter~0 1)} assume !!(#t~post7 < 2);havoc #t~post7; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:37,071 INFO L290 TraceCheckUtils]: 6: Hoare triple {486#(<= ~counter~0 0)} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {502#(<= ~counter~0 1)} is VALID [2022-04-27 13:21:37,071 INFO L290 TraceCheckUtils]: 5: Hoare triple {486#(<= ~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; {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:37,071 INFO L272 TraceCheckUtils]: 4: Hoare triple {486#(<= ~counter~0 0)} call #t~ret8 := main(); {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:37,072 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {486#(<= ~counter~0 0)} {478#true} #54#return; {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:37,072 INFO L290 TraceCheckUtils]: 2: Hoare triple {486#(<= ~counter~0 0)} assume true; {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:37,073 INFO L290 TraceCheckUtils]: 1: Hoare triple {478#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; {486#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:37,073 INFO L272 TraceCheckUtils]: 0: Hoare triple {478#true} call ULTIMATE.init(); {478#true} is VALID [2022-04-27 13:21:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 13:21:37,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:21:37,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946554623] [2022-04-27 13:21:37,074 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:21:37,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689856460] [2022-04-27 13:21:37,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689856460] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-27 13:21:37,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-27 13:21:37,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2022-04-27 13:21:37,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142736551] [2022-04-27 13:21:37,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-27 13:21:37,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2022-04-27 13:21:37,075 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:21:37,076 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:37,094 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:37,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 13:21:37,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:21:37,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 13:21:37,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-27 13:21:37,096 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:37,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:37,168 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2022-04-27 13:21:37,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-27 13:21:37,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2022-04-27 13:21:37,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:21:37,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 36 transitions. [2022-04-27 13:21:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 36 transitions. [2022-04-27 13:21:37,172 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 36 transitions. [2022-04-27 13:21:37,197 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:37,198 INFO L225 Difference]: With dead ends: 34 [2022-04-27 13:21:37,198 INFO L226 Difference]: Without dead ends: 27 [2022-04-27 13:21:37,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-04-27 13:21:37,199 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 13:21:37,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 58 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 13:21:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-27 13:21:37,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-27 13:21:37,211 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:21:37,213 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2022-04-27 13:21:37,214 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2022-04-27 13:21:37,214 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2022-04-27 13:21:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:37,218 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-04-27 13:21:37,218 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-04-27 13:21:37,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:37,224 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:37,224 INFO L74 IsIncluded]: Start isIncluded. First operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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 27 states. [2022-04-27 13:21:37,224 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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 27 states. [2022-04-27 13:21:37,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:37,228 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-04-27 13:21:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-04-27 13:21:37,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:37,228 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:37,228 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:21:37,228 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:21:37,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2022-04-27 13:21:37,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-04-27 13:21:37,230 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2022-04-27 13:21:37,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:21:37,230 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-04-27 13:21:37,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 4 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:37,230 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-04-27 13:21:37,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-27 13:21:37,231 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:21:37,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 13:21:37,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-27 13:21:37,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:37,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:21:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:21:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2088079788, now seen corresponding path program 1 times [2022-04-27 13:21:37,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:21:37,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901681099] [2022-04-27 13:21:37,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:37,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:21:37,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:21:37,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662200852] [2022-04-27 13:21:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:37,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:37,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:37,445 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) [2022-04-27 13:21:37,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-27 13:21:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:37,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-27 13:21:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:37,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:21:37,730 INFO L272 TraceCheckUtils]: 0: Hoare triple {745#true} call ULTIMATE.init(); {745#true} is VALID [2022-04-27 13:21:37,730 INFO L290 TraceCheckUtils]: 1: Hoare triple {745#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; {745#true} is VALID [2022-04-27 13:21:37,730 INFO L290 TraceCheckUtils]: 2: Hoare triple {745#true} assume true; {745#true} is VALID [2022-04-27 13:21:37,731 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {745#true} {745#true} #54#return; {745#true} is VALID [2022-04-27 13:21:37,731 INFO L272 TraceCheckUtils]: 4: Hoare triple {745#true} call #t~ret8 := main(); {745#true} is VALID [2022-04-27 13:21:37,732 INFO L290 TraceCheckUtils]: 5: Hoare triple {745#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; {765#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-27 13:21:37,733 INFO L290 TraceCheckUtils]: 6: Hoare triple {765#(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; {765#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-27 13:21:37,733 INFO L290 TraceCheckUtils]: 7: Hoare triple {765#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(#t~post7 < 2);havoc #t~post7; {765#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-27 13:21:37,733 INFO L272 TraceCheckUtils]: 8: Hoare triple {765#(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)); {745#true} is VALID [2022-04-27 13:21:37,734 INFO L290 TraceCheckUtils]: 9: Hoare triple {745#true} ~cond := #in~cond; {778#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:21:37,734 INFO L290 TraceCheckUtils]: 10: Hoare triple {778#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {782#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:21:37,735 INFO L290 TraceCheckUtils]: 11: Hoare triple {782#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {782#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:21:37,735 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {782#(not (= |__VERIFIER_assert_#in~cond| 0))} {765#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} #50#return; {765#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-27 13:21:37,736 INFO L290 TraceCheckUtils]: 13: Hoare triple {765#(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; {792#(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 [2022-04-27 13:21:37,737 INFO L290 TraceCheckUtils]: 14: Hoare triple {792#(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; {792#(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 [2022-04-27 13:21:37,737 INFO L290 TraceCheckUtils]: 15: Hoare triple {792#(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 < 2);havoc #t~post7; {792#(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 [2022-04-27 13:21:37,837 INFO L272 TraceCheckUtils]: 16: Hoare triple {792#(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)); {802#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 13:21:37,838 INFO L290 TraceCheckUtils]: 17: Hoare triple {802#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {806#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:21:37,838 INFO L290 TraceCheckUtils]: 18: Hoare triple {806#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {746#false} is VALID [2022-04-27 13:21:37,839 INFO L290 TraceCheckUtils]: 19: Hoare triple {746#false} assume !false; {746#false} is VALID [2022-04-27 13:21:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 13:21:37,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 13:21:46,440 INFO L290 TraceCheckUtils]: 19: Hoare triple {746#false} assume !false; {746#false} is VALID [2022-04-27 13:21:46,441 INFO L290 TraceCheckUtils]: 18: Hoare triple {806#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {746#false} is VALID [2022-04-27 13:21:46,441 INFO L290 TraceCheckUtils]: 17: Hoare triple {802#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {806#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:21:46,442 INFO L272 TraceCheckUtils]: 16: Hoare triple {822#(= (+ (* 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)); {802#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 13:21:46,443 INFO L290 TraceCheckUtils]: 15: Hoare triple {822#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !!(#t~post7 < 2);havoc #t~post7; {822#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-27 13:21:46,443 INFO L290 TraceCheckUtils]: 14: Hoare triple {822#(= (+ (* 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; {822#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-27 13:21:46,474 INFO L290 TraceCheckUtils]: 13: Hoare triple {832#(= (+ (* 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; {822#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-27 13:21:46,479 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {782#(not (= |__VERIFIER_assert_#in~cond| 0))} {745#true} #50#return; {832#(= (+ (* 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 [2022-04-27 13:21:46,479 INFO L290 TraceCheckUtils]: 11: Hoare triple {782#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {782#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:21:46,480 INFO L290 TraceCheckUtils]: 10: Hoare triple {845#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {782#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:21:46,480 INFO L290 TraceCheckUtils]: 9: Hoare triple {745#true} ~cond := #in~cond; {845#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-27 13:21:46,480 INFO L272 TraceCheckUtils]: 8: Hoare triple {745#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {745#true} is VALID [2022-04-27 13:21:46,480 INFO L290 TraceCheckUtils]: 7: Hoare triple {745#true} assume !!(#t~post7 < 2);havoc #t~post7; {745#true} is VALID [2022-04-27 13:21:46,481 INFO L290 TraceCheckUtils]: 6: Hoare triple {745#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {745#true} is VALID [2022-04-27 13:21:46,481 INFO L290 TraceCheckUtils]: 5: Hoare triple {745#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; {745#true} is VALID [2022-04-27 13:21:46,481 INFO L272 TraceCheckUtils]: 4: Hoare triple {745#true} call #t~ret8 := main(); {745#true} is VALID [2022-04-27 13:21:46,481 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {745#true} {745#true} #54#return; {745#true} is VALID [2022-04-27 13:21:46,481 INFO L290 TraceCheckUtils]: 2: Hoare triple {745#true} assume true; {745#true} is VALID [2022-04-27 13:21:46,481 INFO L290 TraceCheckUtils]: 1: Hoare triple {745#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; {745#true} is VALID [2022-04-27 13:21:46,481 INFO L272 TraceCheckUtils]: 0: Hoare triple {745#true} call ULTIMATE.init(); {745#true} is VALID [2022-04-27 13:21:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 13:21:46,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:21:46,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901681099] [2022-04-27 13:21:46,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:21:46,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662200852] [2022-04-27 13:21:46,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662200852] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-27 13:21:46,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-27 13:21:46,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-04-27 13:21:46,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467005205] [2022-04-27 13:21:46,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-27 13:21:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2022-04-27 13:21:46,484 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:21:46,484 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:46,546 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:46,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-27 13:21:46,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:21:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-27 13:21:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-27 13:21:46,547 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:47,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:47,695 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-04-27 13:21:47,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-27 13:21:47,696 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2022-04-27 13:21:47,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:21:47,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 31 transitions. [2022-04-27 13:21:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 31 transitions. [2022-04-27 13:21:47,701 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 31 transitions. [2022-04-27 13:21:49,894 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 13:21:49,895 INFO L225 Difference]: With dead ends: 30 [2022-04-27 13:21:49,895 INFO L226 Difference]: Without dead ends: 0 [2022-04-27 13:21:49,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-04-27 13:21:49,896 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-27 13:21:49,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-27 13:21:49,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-27 13:21:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-27 13:21:49,896 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:21:49,897 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) [2022-04-27 13:21:49,897 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) [2022-04-27 13:21:49,897 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) [2022-04-27 13:21:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:49,897 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 13:21:49,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 13:21:49,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:49,897 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:49,897 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. [2022-04-27 13:21:49,897 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. [2022-04-27 13:21:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:49,897 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 13:21:49,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 13:21:49,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:49,898 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:49,898 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:21:49,898 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:21:49,898 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) [2022-04-27 13:21:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-27 13:21:49,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-27 13:21:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:21:49,898 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-27 13:21:49,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-27 13:21:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 13:21:49,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:49,900 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 13:21:49,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-27 13:21:50,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:50,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-27 13:21:50,245 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-27 13:21:50,245 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-27 13:21:50,245 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-27 13:21:50,246 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 11 13) no Hoare annotation was computed. [2022-04-27 13:21:50,246 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-04-27 13:21:50,246 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-04-27 13:21:50,246 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-04-27 13:21:50,246 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2022-04-27 13:21:50,246 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))) [2022-04-27 13:21:50,246 INFO L895 garLoopResultBuilder]: At program point L34-4(lines 34 43) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))) [2022-04-27 13:21:50,246 INFO L895 garLoopResultBuilder]: At program point mainENTRY(lines 22 46) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (<= ~counter~0 0)) [2022-04-27 13:21:50,246 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 46) no Hoare annotation was computed. [2022-04-27 13:21:50,247 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 22 46) no Hoare annotation was computed. [2022-04-27 13:21:50,247 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2022-04-27 13:21:50,247 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (or (not (<= |old(~counter~0)| 0)) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))) [2022-04-27 13:21:50,247 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 43) no Hoare annotation was computed. [2022-04-27 13:21:50,247 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-27 13:21:50,247 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2022-04-27 13:21:50,247 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-27 13:21:50,247 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-27 13:21:50,247 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-27 13:21:50,248 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-27 13:21:50,248 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-27 13:21:50,248 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-04-27 13:21:50,248 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-04-27 13:21:50,248 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-27 13:21:50,248 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-04-27 13:21:50,248 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-04-27 13:21:50,248 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-04-27 13:21:50,251 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-27 13:21:50,252 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 13:21:50,255 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-27 13:21:50,255 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 13:21:50,255 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-27 13:21:50,257 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-27 13:21:50,257 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-27 13:21:50,257 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 13:21:50,257 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 13:21:50,258 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-27 13:21:50,258 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-27 13:21:50,258 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-27 13:21:50,258 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-27 13:21:50,258 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L12-2 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-27 13:21:50,259 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-27 13:21:50,260 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-27 13:21:50,260 INFO L163 areAnnotationChecker]: CFG has 6 edges. 6 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-27 13:21:50,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 01:21:50 BoogieIcfgContainer [2022-04-27 13:21:50,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 13:21:50,268 INFO L158 Benchmark]: Toolchain (without parser) took 16119.52ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 123.9MB in the beginning and 147.5MB in the end (delta: -23.6MB). Peak memory consumption was 12.9MB. Max. memory is 8.0GB. [2022-04-27 13:21:50,268 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 13:21:50,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.07ms. Allocated memory is still 175.1MB. Free memory was 123.6MB in the beginning and 149.8MB in the end (delta: -26.1MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. [2022-04-27 13:21:50,268 INFO L158 Benchmark]: Boogie Preprocessor took 26.68ms. Allocated memory is still 175.1MB. Free memory was 149.8MB in the beginning and 148.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 13:21:50,268 INFO L158 Benchmark]: RCFGBuilder took 291.02ms. Allocated memory is still 175.1MB. Free memory was 148.3MB in the beginning and 136.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 13:21:50,269 INFO L158 Benchmark]: TraceAbstraction took 15576.09ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 136.6MB in the beginning and 147.5MB in the end (delta: -10.9MB). Peak memory consumption was 26.3MB. Max. memory is 8.0GB. [2022-04-27 13:21:50,270 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 0.11ms. Allocated memory is still 175.1MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.07ms. Allocated memory is still 175.1MB. Free memory was 123.6MB in the beginning and 149.8MB in the end (delta: -26.1MB). Peak memory consumption was 10.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.68ms. Allocated memory is still 175.1MB. Free memory was 149.8MB in the beginning and 148.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 291.02ms. Allocated memory is still 175.1MB. Free memory was 148.3MB in the beginning and 136.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 15576.09ms. Allocated memory was 175.1MB in the beginning and 210.8MB in the end (delta: 35.7MB). Free memory was 136.6MB in the beginning and 147.5MB in the end (delta: -10.9MB). Peak memory consumption was 26.3MB. 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: 15.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 256 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 165 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 85 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 91 mSDtfsCounter, 85 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 8 LocationsWithAnnotation, 17 PreInvPairs, 26 NumberOfFragments, 62 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 372 SizeOfPredicates, 6 NumberOfNonLiveVariables, 443 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 9/18 InterpolantCoveringCapability, 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: !(\old(counter) <= 0) || y * az + x == z * x + a RESULT: Ultimate proved your program to be correct! [2022-04-27 13:21:50,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...