/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_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 13:21:28,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 13:21:28,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 13:21:28,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-27 13:21:28,503 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-27 13:21:28,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-27 13:21:28,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-27 13:21:28,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-27 13:21:28,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-27 13:21:28,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-27 13:21:28,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-27 13:21:28,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-27 13:21:28,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 13:21:28,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 13:21:28,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 13:21:28,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 13:21:28,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 13:21:28,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 13:21:28,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 13:21:28,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 13:21:28,520 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 13:21:28,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 13:21:28,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 13:21:28,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 13:21:28,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 13:21:28,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-27 13:21:28,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 13:21:28,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 13:21:28,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 13:21:28,537 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 13:21:28,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 13:21:28,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 13:21:28,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-27 13:21:28,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-27 13:21:28,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-27 13:21:28,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-27 13:21:28,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-27 13:21:28,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-27 13:21:28,557 INFO L138 SettingsManager]: * Use SBE=true [2022-04-27 13:21:28,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 13:21:28,557 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 13:21:28,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 13:21:28,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 13:21:28,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 13:21:28,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 13:21:28,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 13:21:28,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 13:21:28,558 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 13:21:28,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 13:21:28,558 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 13:21:28,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 13:21:28,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 13:21:28,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 13:21:28,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 13:21:28,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 13:21:28,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 13:21:28,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-27 13:21:28,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-27 13:21:28,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 13:21:28,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-27 13:21:28,562 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-04-27 13:21:28,562 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-27 13:21:28,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-27 13:21:28,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 13:21:28,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 13:21:28,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 13:21:28,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 13:21:28,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 13:21:28,762 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 13:21:28,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound1.c [2022-04-27 13:21:28,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56780d82/0adbfd9415284c9cb293bcdc4eeef4f1/FLAG84171b0f8 [2022-04-27 13:21:29,106 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 13:21:29,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound1.c [2022-04-27 13:21:29,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56780d82/0adbfd9415284c9cb293bcdc4eeef4f1/FLAG84171b0f8 [2022-04-27 13:21:29,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b56780d82/0adbfd9415284c9cb293bcdc4eeef4f1 [2022-04-27 13:21:29,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 13:21:29,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-27 13:21:29,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 13:21:29,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 13:21:29,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 13:21:29,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b7e55d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29, skipping insertion in model container [2022-04-27 13:21:29,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 13:21:29,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 13:21:29,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound1.c[525,538] [2022-04-27 13:21:29,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 13:21:29,706 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 13:21:29,713 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo3-ll_unwindbound1.c[525,538] [2022-04-27 13:21:29,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 13:21:29,725 INFO L208 MainTranslator]: Completed translation [2022-04-27 13:21:29,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29 WrapperNode [2022-04-27 13:21:29,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 13:21:29,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 13:21:29,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 13:21:29,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 13:21:29,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 13:21:29,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 13:21:29,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 13:21:29,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 13:21:29,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29" (1/1) ... [2022-04-27 13:21:29,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 13:21:29,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:29,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-27 13:21:29,804 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 13:21:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 13:21:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 13:21:29,822 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 13:21:29,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 13:21:29,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 13:21:29,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 13:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 13:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 13:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 13:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 13:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-27 13:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 13:21:29,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 13:21:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 13:21:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 13:21:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 13:21:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 13:21:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 13:21:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 13:21:29,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 13:21:29,875 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 13:21:29,876 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 13:21:29,984 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 13:21:29,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 13:21:29,988 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 13:21:29,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 01:21:29 BoogieIcfgContainer [2022-04-27 13:21:29,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 13:21:29,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 13:21:29,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 13:21:29,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 13:21:29,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 01:21:29" (1/3) ... [2022-04-27 13:21:29,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275830e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 01:21:29, skipping insertion in model container [2022-04-27 13:21:29,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 01:21:29" (2/3) ... [2022-04-27 13:21:29,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275830e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 01:21:29, skipping insertion in model container [2022-04-27 13:21:29,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 01:21:29" (3/3) ... [2022-04-27 13:21:29,995 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_unwindbound1.c [2022-04-27 13:21:30,003 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-27 13:21:30,004 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 13:21:30,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 13:21:30,036 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@55cb53b9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47c6ad8 [2022-04-27 13:21:30,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 13:21:30,048 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 13:21:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-27 13:21:30,061 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:21:30,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 13:21:30,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:21:30,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:21:30,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 1 times [2022-04-27 13:21:30,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:21:30,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350067586] [2022-04-27 13:21:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:30,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:21:30,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:21:30,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046958548] [2022-04-27 13:21:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:30,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:30,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:30,165 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 13:21:30,166 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 13:21:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:30,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-27 13:21:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:30,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:21:30,299 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {25#true} is VALID [2022-04-27 13:21:30,300 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 13:21:30,300 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-27 13:21:30,300 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} #54#return; {25#true} is VALID [2022-04-27 13:21:30,300 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} call #t~ret8 := main(); {25#true} is VALID [2022-04-27 13:21:30,301 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 13:21:30,302 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} assume !true; {26#false} is VALID [2022-04-27 13:21:30,302 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 13:21:30,302 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-04-27 13:21:30,302 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2022-04-27 13:21:30,302 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-04-27 13:21:30,303 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 13:21:30,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 13:21:30,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:21:30,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350067586] [2022-04-27 13:21:30,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:21:30,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046958548] [2022-04-27 13:21:30,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046958548] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 13:21:30,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 13:21:30,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-27 13:21:30,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862467165] [2022-04-27 13:21:30,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 13:21:30,311 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 13:21:30,312 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:21:30,314 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 13:21:30,330 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 13:21:30,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-27 13:21:30,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:21:30,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-27 13:21:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-27 13:21:30,355 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 13:21:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:30,412 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-04-27 13:21:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-27 13:21:30,412 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 13:21:30,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:21:30,414 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 13:21:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2022-04-27 13:21:30,421 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 13:21:30,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2022-04-27 13:21:30,426 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 2 states and 48 transitions. [2022-04-27 13:21:30,478 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 13:21:30,484 INFO L225 Difference]: With dead ends: 38 [2022-04-27 13:21:30,484 INFO L226 Difference]: Without dead ends: 17 [2022-04-27 13:21:30,486 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 13:21:30,489 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 13:21:30,491 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 13:21:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-04-27 13:21:30,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-04-27 13:21:30,515 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:21:30,516 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 13:21:30,516 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 13:21:30,517 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 13:21:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:30,520 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-27 13:21:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-27 13:21:30,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:30,521 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:30,522 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 13:21:30,522 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 13:21:30,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:30,524 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-04-27 13:21:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-27 13:21:30,525 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:30,525 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:30,526 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:21:30,526 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:21:30,529 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 13:21:30,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-27 13:21:30,539 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-27 13:21:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:21:30,540 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-27 13:21:30,540 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 13:21:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-27 13:21:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 13:21:30,541 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:21:30,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 13:21:30,566 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 13:21:30,751 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 13:21:30,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:21:30,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:21:30,752 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 1 times [2022-04-27 13:21:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:21:30,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142382831] [2022-04-27 13:21:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:30,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:21:30,767 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:21:30,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570502966] [2022-04-27 13:21:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:30,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:30,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:30,772 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 13:21:30,773 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 13:21:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:30,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-27 13:21:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:30,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:21:30,963 INFO L272 TraceCheckUtils]: 0: Hoare triple {168#true} call ULTIMATE.init(); {168#true} is VALID [2022-04-27 13:21:30,963 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 13:21:30,964 INFO L290 TraceCheckUtils]: 2: Hoare triple {176#(<= ~counter~0 0)} assume true; {176#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:30,964 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {176#(<= ~counter~0 0)} {168#true} #54#return; {176#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:30,965 INFO L272 TraceCheckUtils]: 4: Hoare triple {176#(<= ~counter~0 0)} call #t~ret8 := main(); {176#(<= ~counter~0 0)} is VALID [2022-04-27 13:21:30,965 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 13:21:30,966 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 13:21:30,966 INFO L290 TraceCheckUtils]: 7: Hoare triple {192#(<= |main_#t~post7| 0)} assume !(#t~post7 < 1);havoc #t~post7; {169#false} is VALID [2022-04-27 13:21:30,966 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 13:21:30,967 INFO L290 TraceCheckUtils]: 9: Hoare triple {169#false} ~cond := #in~cond; {169#false} is VALID [2022-04-27 13:21:30,967 INFO L290 TraceCheckUtils]: 10: Hoare triple {169#false} assume 0 == ~cond; {169#false} is VALID [2022-04-27 13:21:30,967 INFO L290 TraceCheckUtils]: 11: Hoare triple {169#false} assume !false; {169#false} is VALID [2022-04-27 13:21:30,967 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 13:21:30,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 13:21:30,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:21:30,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142382831] [2022-04-27 13:21:30,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:21:30,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570502966] [2022-04-27 13:21:30,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570502966] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 13:21:30,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 13:21:30,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-27 13:21:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408715305] [2022-04-27 13:21:30,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 13:21:30,970 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 13:21:30,970 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:21:30,970 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 13:21:30,983 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 13:21:30,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-27 13:21:30,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:21:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-27 13:21:30,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 13:21:30,985 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 13:21:31,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:31,037 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-27 13:21:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-27 13:21:31,038 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 13:21:31,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:21:31,038 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 13:21:31,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-27 13:21:31,039 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 13:21:31,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-27 13:21:31,040 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 28 transitions. [2022-04-27 13:21:31,063 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 13:21:31,063 INFO L225 Difference]: With dead ends: 26 [2022-04-27 13:21:31,064 INFO L226 Difference]: Without dead ends: 19 [2022-04-27 13:21:31,064 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 13:21:31,065 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 13:21:31,065 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 13:21:31,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-27 13:21:31,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-27 13:21:31,076 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:21:31,077 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 13:21:31,078 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 13:21:31,078 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 13:21:31,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:31,081 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-27 13:21:31,081 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 13:21:31,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:31,081 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:31,082 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 13:21:31,083 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 13:21:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:31,087 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-27 13:21:31,087 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 13:21:31,087 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:31,087 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:31,088 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:21:31,088 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:21:31,088 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 13:21:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-27 13:21:31,090 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-27 13:21:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:21:31,091 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-27 13:21:31,091 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 13:21:31,091 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 13:21:31,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 13:21:31,092 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:21:31,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 13:21:31,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-27 13:21:31,307 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 13:21:31,308 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:21:31,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:21:31,308 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 1 times [2022-04-27 13:21:31,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:21:31,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092970747] [2022-04-27 13:21:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:31,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:21:31,318 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:21:31,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166514464] [2022-04-27 13:21:31,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:31,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:31,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:31,319 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 13:21:31,321 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 13:21:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:31,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-27 13:21:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:31,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:21:31,485 INFO L272 TraceCheckUtils]: 0: Hoare triple {310#true} call ULTIMATE.init(); {310#true} is VALID [2022-04-27 13:21:31,485 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 13:21:31,485 INFO L290 TraceCheckUtils]: 2: Hoare triple {310#true} assume true; {310#true} is VALID [2022-04-27 13:21:31,486 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {310#true} {310#true} #54#return; {310#true} is VALID [2022-04-27 13:21:31,486 INFO L272 TraceCheckUtils]: 4: Hoare triple {310#true} call #t~ret8 := main(); {310#true} is VALID [2022-04-27 13:21:31,486 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 13:21:31,487 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 13:21:31,487 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 < 1);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 13:21:31,488 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 13:21:31,488 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 13:21:31,489 INFO L290 TraceCheckUtils]: 10: Hoare triple {344#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {311#false} is VALID [2022-04-27 13:21:31,489 INFO L290 TraceCheckUtils]: 11: Hoare triple {311#false} assume !false; {311#false} is VALID [2022-04-27 13:21:31,489 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 13:21:31,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 13:21:31,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:21:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092970747] [2022-04-27 13:21:31,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:21:31,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166514464] [2022-04-27 13:21:31,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166514464] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 13:21:31,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 13:21:31,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-27 13:21:31,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960564840] [2022-04-27 13:21:31,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 13:21:31,491 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 13:21:31,491 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:21:31,491 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 13:21:31,500 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 13:21:31,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 13:21:31,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:21:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 13:21:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-27 13:21:31,501 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 13:21:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:31,581 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-04-27 13:21:31,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 13:21:31,581 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 13:21:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:21:31,581 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 13:21:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-27 13:21:31,582 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 13:21:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-27 13:21:31,584 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 31 transitions. [2022-04-27 13:21:31,606 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 13:21:31,607 INFO L225 Difference]: With dead ends: 28 [2022-04-27 13:21:31,607 INFO L226 Difference]: Without dead ends: 25 [2022-04-27 13:21:31,607 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 13:21:31,608 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 13:21:31,608 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 13:21:31,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-27 13:21:31,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-27 13:21:31,614 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:21:31,614 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 13:21:31,614 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 13:21:31,615 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 13:21:31,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:31,616 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-27 13:21:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 13:21:31,616 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:31,616 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:31,616 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 13:21:31,617 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 13:21:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:21:31,618 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-27 13:21:31,618 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 13:21:31,618 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:21:31,618 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:21:31,618 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:21:31,618 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:21:31,618 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 13:21:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-27 13:21:31,619 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-27 13:21:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:21:31,620 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-27 13:21:31,620 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 13:21:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 13:21:31,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-27 13:21:31,620 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 13:21:31,620 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 13:21:31,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-27 13:21:31,835 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 13:21:31,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 13:21:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 13:21:31,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2089867248, now seen corresponding path program 1 times [2022-04-27 13:21:31,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 13:21:31,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087038699] [2022-04-27 13:21:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 13:21:31,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 13:21:31,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846758344] [2022-04-27 13:21:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 13:21:31,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 13:21:31,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 13:21:31,848 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 13:21:31,849 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 13:21:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:31,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 20 conjunts are in the unsatisfiable core [2022-04-27 13:21:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 13:21:31,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 13:21:32,140 INFO L272 TraceCheckUtils]: 0: Hoare triple {478#true} call ULTIMATE.init(); {478#true} is VALID [2022-04-27 13:21:32,141 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; {478#true} is VALID [2022-04-27 13:21:32,141 INFO L290 TraceCheckUtils]: 2: Hoare triple {478#true} assume true; {478#true} is VALID [2022-04-27 13:21:32,141 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {478#true} {478#true} #54#return; {478#true} is VALID [2022-04-27 13:21:32,141 INFO L272 TraceCheckUtils]: 4: Hoare triple {478#true} call #t~ret8 := main(); {478#true} is VALID [2022-04-27 13:21:32,142 INFO L290 TraceCheckUtils]: 5: Hoare triple {478#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; {498#(and (= main_~y~0 1) (= main_~a~0 main_~x~0))} is VALID [2022-04-27 13:21:32,142 INFO L290 TraceCheckUtils]: 6: Hoare triple {498#(and (= main_~y~0 1) (= main_~a~0 main_~x~0))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {498#(and (= main_~y~0 1) (= main_~a~0 main_~x~0))} is VALID [2022-04-27 13:21:32,142 INFO L290 TraceCheckUtils]: 7: Hoare triple {498#(and (= main_~y~0 1) (= main_~a~0 main_~x~0))} assume !!(#t~post7 < 1);havoc #t~post7; {498#(and (= main_~y~0 1) (= main_~a~0 main_~x~0))} is VALID [2022-04-27 13:21:32,143 INFO L272 TraceCheckUtils]: 8: Hoare triple {498#(and (= main_~y~0 1) (= main_~a~0 main_~x~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {478#true} is VALID [2022-04-27 13:21:32,143 INFO L290 TraceCheckUtils]: 9: Hoare triple {478#true} ~cond := #in~cond; {511#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:21:32,143 INFO L290 TraceCheckUtils]: 10: Hoare triple {511#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {515#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:21:32,144 INFO L290 TraceCheckUtils]: 11: Hoare triple {515#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {515#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:21:32,145 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {515#(not (= |__VERIFIER_assert_#in~cond| 0))} {498#(and (= main_~y~0 1) (= main_~a~0 main_~x~0))} #50#return; {522#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)))} is VALID [2022-04-27 13:21:32,145 INFO L290 TraceCheckUtils]: 13: Hoare triple {522#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {526#(and (= (+ (* main_~a~0 main_~z~0) main_~a~0) (+ main_~a~0 main_~az~0)) (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)))} is VALID [2022-04-27 13:21:32,146 INFO L290 TraceCheckUtils]: 14: Hoare triple {526#(and (= (+ (* main_~a~0 main_~z~0) main_~a~0) (+ main_~a~0 main_~az~0)) (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)))} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {526#(and (= (+ (* main_~a~0 main_~z~0) main_~a~0) (+ main_~a~0 main_~az~0)) (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)))} is VALID [2022-04-27 13:21:32,149 INFO L290 TraceCheckUtils]: 15: Hoare triple {526#(and (= (+ (* main_~a~0 main_~z~0) main_~a~0) (+ main_~a~0 main_~az~0)) (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)))} assume !(#t~post7 < 1);havoc #t~post7; {526#(and (= (+ (* main_~a~0 main_~z~0) main_~a~0) (+ main_~a~0 main_~az~0)) (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)))} is VALID [2022-04-27 13:21:32,150 INFO L272 TraceCheckUtils]: 16: Hoare triple {526#(and (= (+ (* main_~a~0 main_~z~0) main_~a~0) (+ main_~a~0 main_~az~0)) (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~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)); {536#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 13:21:32,151 INFO L290 TraceCheckUtils]: 17: Hoare triple {536#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {540#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:21:32,151 INFO L290 TraceCheckUtils]: 18: Hoare triple {540#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {479#false} is VALID [2022-04-27 13:21:32,151 INFO L290 TraceCheckUtils]: 19: Hoare triple {479#false} assume !false; {479#false} is VALID [2022-04-27 13:21:32,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 13:21:32,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 13:21:51,785 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-27 13:22:33,544 INFO L290 TraceCheckUtils]: 19: Hoare triple {479#false} assume !false; {479#false} is VALID [2022-04-27 13:22:33,545 INFO L290 TraceCheckUtils]: 18: Hoare triple {540#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {479#false} is VALID [2022-04-27 13:22:33,545 INFO L290 TraceCheckUtils]: 17: Hoare triple {536#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {540#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 13:22:33,546 INFO L272 TraceCheckUtils]: 16: Hoare triple {556#(= (+ (* 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)); {536#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 13:22:33,546 INFO L290 TraceCheckUtils]: 15: Hoare triple {556#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !(#t~post7 < 1);havoc #t~post7; {556#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-27 13:22:33,547 INFO L290 TraceCheckUtils]: 14: Hoare triple {556#(= (+ (* 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; {556#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-27 13:22:33,577 INFO L290 TraceCheckUtils]: 13: Hoare triple {566#(= (+ (* 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; {556#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-27 13:22:33,581 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {515#(not (= |__VERIFIER_assert_#in~cond| 0))} {478#true} #50#return; {566#(= (+ (* 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 13:22:33,581 INFO L290 TraceCheckUtils]: 11: Hoare triple {515#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {515#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:22:33,582 INFO L290 TraceCheckUtils]: 10: Hoare triple {579#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {515#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-27 13:22:33,582 INFO L290 TraceCheckUtils]: 9: Hoare triple {478#true} ~cond := #in~cond; {579#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-27 13:22:33,582 INFO L272 TraceCheckUtils]: 8: Hoare triple {478#true} 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 13:22:33,582 INFO L290 TraceCheckUtils]: 7: Hoare triple {478#true} assume !!(#t~post7 < 1);havoc #t~post7; {478#true} is VALID [2022-04-27 13:22:33,583 INFO L290 TraceCheckUtils]: 6: Hoare triple {478#true} #t~post7 := ~counter~0;~counter~0 := 1 + #t~post7; {478#true} is VALID [2022-04-27 13:22:33,583 INFO L290 TraceCheckUtils]: 5: Hoare triple {478#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; {478#true} is VALID [2022-04-27 13:22:33,583 INFO L272 TraceCheckUtils]: 4: Hoare triple {478#true} call #t~ret8 := main(); {478#true} is VALID [2022-04-27 13:22:33,583 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {478#true} {478#true} #54#return; {478#true} is VALID [2022-04-27 13:22:33,583 INFO L290 TraceCheckUtils]: 2: Hoare triple {478#true} assume true; {478#true} is VALID [2022-04-27 13:22:33,583 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; {478#true} is VALID [2022-04-27 13:22:33,583 INFO L272 TraceCheckUtils]: 0: Hoare triple {478#true} call ULTIMATE.init(); {478#true} is VALID [2022-04-27 13:22:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 13:22:33,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 13:22:33,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087038699] [2022-04-27 13:22:33,584 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 13:22:33,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846758344] [2022-04-27 13:22:33,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846758344] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-27 13:22:33,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-27 13:22:33,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-04-27 13:22:33,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546963316] [2022-04-27 13:22:33,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-27 13:22:33,584 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) 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 13:22:33,585 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 13:22:33,585 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 12 states, 12 states have (on average 1.8333333333333333) 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 13:22:33,658 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 13:22:33,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-27 13:22:33,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 13:22:33,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-27 13:22:33,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-04-27 13:22:33,659 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) 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 13:22:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:22:34,942 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-04-27 13:22:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-27 13:22:34,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) 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 13:22:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 13:22:34,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.8333333333333333) 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 13:22:34,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2022-04-27 13:22:34,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.8333333333333333) 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 13:22:34,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2022-04-27 13:22:34,945 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 32 transitions. [2022-04-27 13:22:37,229 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 31 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-27 13:22:37,229 INFO L225 Difference]: With dead ends: 30 [2022-04-27 13:22:37,229 INFO L226 Difference]: Without dead ends: 0 [2022-04-27 13:22:37,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-27 13:22:37,231 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-27 13:22:37,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 88 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-27 13:22:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-27 13:22:37,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-27 13:22:37,231 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 13:22:37,232 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 13:22:37,232 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 13:22:37,232 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 13:22:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:22:37,232 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 13:22:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 13:22:37,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:22:37,232 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:22:37,232 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 13:22:37,232 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 13:22:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 13:22:37,232 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 13:22:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 13:22:37,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:22:37,233 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 13:22:37,233 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 13:22:37,233 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 13:22:37,233 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 13:22:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-27 13:22:37,233 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-27 13:22:37,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 13:22:37,233 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-27 13:22:37,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) 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 13:22:37,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 13:22:37,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 13:22:37,235 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 13:22:37,252 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 13:22:37,436 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 13:22:37,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-27 13:22:37,539 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-27 13:22:37,539 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-27 13:22:37,539 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-27 13:22:37,539 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 11 13) no Hoare annotation was computed. [2022-04-27 13:22:37,539 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-04-27 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-04-27 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-04-27 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2022-04-27 13:22:37,540 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 13:22:37,540 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 13:22:37,540 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 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 22 46) no Hoare annotation was computed. [2022-04-27 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 22 46) no Hoare annotation was computed. [2022-04-27 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2022-04-27 13:22:37,540 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 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 43) no Hoare annotation was computed. [2022-04-27 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-27 13:22:37,540 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2022-04-27 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-27 13:22:37,540 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-27 13:22:37,541 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-27 13:22:37,541 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-27 13:22:37,541 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-27 13:22:37,541 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-04-27 13:22:37,541 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-04-27 13:22:37,541 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-27 13:22:37,541 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-04-27 13:22:37,541 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-04-27 13:22:37,541 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-04-27 13:22:37,543 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-27 13:22:37,544 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 13:22:37,546 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-27 13:22:37,546 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 13:22:37,547 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-27 13:22:37,552 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-27 13:22:37,552 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-27 13:22:37,552 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 13:22:37,552 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L12-2 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L34-1 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-27 13:22:37,553 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-27 13:22:37,554 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2022-04-27 13:22:37,554 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2022-04-27 13:22:37,554 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-27 13:22:37,554 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 13:22:37,554 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 13:22:37,554 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-27 13:22:37,554 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-27 13:22:37,554 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-27 13:22:37,554 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-27 13:22:37,554 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 13:22:37,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 01:22:37 BoogieIcfgContainer [2022-04-27 13:22:37,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 13:22:37,560 INFO L158 Benchmark]: Toolchain (without parser) took 68007.31ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 149.7MB in the beginning and 202.5MB in the end (delta: -52.8MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 13:22:37,560 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory was 165.8MB in the beginning and 165.7MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 13:22:37,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.64ms. Allocated memory is still 201.3MB. Free memory was 149.6MB in the beginning and 176.6MB in the end (delta: -27.0MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2022-04-27 13:22:37,561 INFO L158 Benchmark]: Boogie Preprocessor took 31.56ms. Allocated memory is still 201.3MB. Free memory was 176.6MB in the beginning and 175.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 13:22:37,561 INFO L158 Benchmark]: RCFGBuilder took 231.88ms. Allocated memory is still 201.3MB. Free memory was 175.1MB in the beginning and 164.0MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 13:22:37,561 INFO L158 Benchmark]: TraceAbstraction took 67568.76ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 163.7MB in the beginning and 202.5MB in the end (delta: -38.9MB). Peak memory consumption was 2.3MB. Max. memory is 8.0GB. [2022-04-27 13:22:37,562 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 0.09ms. Allocated memory is still 201.3MB. Free memory was 165.8MB in the beginning and 165.7MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 170.64ms. Allocated memory is still 201.3MB. Free memory was 149.6MB in the beginning and 176.6MB in the end (delta: -27.0MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.56ms. Allocated memory is still 201.3MB. Free memory was 176.6MB in the beginning and 175.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 231.88ms. Allocated memory is still 201.3MB. Free memory was 175.1MB in the beginning and 164.0MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 67568.76ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 163.7MB in the beginning and 202.5MB in the end (delta: -38.9MB). Peak memory consumption was 2.3MB. 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: 67.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 214 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 141 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88 IncrementalHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 73 mSDtfsCounter, 88 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, InterpolantAutomatonStates: 18, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 25 NumberOfFragments, 62 HoareAnnotationTreeSize, 16 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 64 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 62.0s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 5 NumberOfNonLiveVariables, 341 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/8 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 13:22:37,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...