/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/ps3-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 14:31:45,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 14:31:45,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 14:31:45,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-27 14:31:45,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-27 14:31:45,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-27 14:31:45,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-27 14:31:45,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-27 14:31:45,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-27 14:31:45,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-27 14:31:45,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-27 14:31:45,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-27 14:31:45,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 14:31:45,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 14:31:45,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 14:31:45,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 14:31:45,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 14:31:45,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 14:31:45,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 14:31:45,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 14:31:45,800 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 14:31:45,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 14:31:45,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 14:31:45,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 14:31:45,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 14:31:45,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-27 14:31:45,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 14:31:45,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 14:31:45,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 14:31:45,821 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 14:31:45,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 14:31:45,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 14:31:45,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-27 14:31:45,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-27 14:31:45,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-27 14:31:45,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-27 14:31:45,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-27 14:31:45,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-27 14:31:45,851 INFO L138 SettingsManager]: * Use SBE=true [2022-04-27 14:31:45,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 14:31:45,854 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 14:31:45,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 14:31:45,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 14:31:45,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 14:31:45,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 14:31:45,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 14:31:45,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 14:31:45,855 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 14:31:45,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 14:31:45,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 14:31:45,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 14:31:45,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 14:31:45,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 14:31:45,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 14:31:45,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 14:31:45,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 14:31:45,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-27 14:31:45,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-27 14:31:45,857 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 14:31:45,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-27 14:31:45,858 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-04-27 14:31:45,858 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-27 14:31:45,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-27 14:31:45,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 14:31:46,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 14:31:46,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 14:31:46,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 14:31:46,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 14:31:46,078 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 14:31:46,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound100.c [2022-04-27 14:31:46,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bae7a22/1b340e6be99943f0a54656779140b8dc/FLAG814219ccf [2022-04-27 14:31:46,533 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 14:31:46,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps3-ll_unwindbound100.c [2022-04-27 14:31:46,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bae7a22/1b340e6be99943f0a54656779140b8dc/FLAG814219ccf [2022-04-27 14:31:46,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07bae7a22/1b340e6be99943f0a54656779140b8dc [2022-04-27 14:31:46,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 14:31:46,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-27 14:31:46,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 14:31:46,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 14:31:46,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 14:31:46,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311eaf06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46, skipping insertion in model container [2022-04-27 14:31:46,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 14:31:46,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 14:31:46,700 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/ps3-ll_unwindbound100.c[458,471] [2022-04-27 14:31:46,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 14:31:46,719 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 14:31:46,731 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/ps3-ll_unwindbound100.c[458,471] [2022-04-27 14:31:46,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 14:31:46,748 INFO L208 MainTranslator]: Completed translation [2022-04-27 14:31:46,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46 WrapperNode [2022-04-27 14:31:46,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 14:31:46,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 14:31:46,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 14:31:46,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 14:31:46,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 14:31:46,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 14:31:46,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 14:31:46,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 14:31:46,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46" (1/1) ... [2022-04-27 14:31:46,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 14:31:46,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:31:46,814 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 14:31:46,823 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 14:31:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 14:31:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 14:31:46,847 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 14:31:46,848 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 14:31:46,850 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 14:31:46,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 14:31:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 14:31:46,851 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 14:31:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 14:31:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 14:31:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-27 14:31:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 14:31:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 14:31:46,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 14:31:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 14:31:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 14:31:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 14:31:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 14:31:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 14:31:46,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 14:31:46,910 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 14:31:46,911 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 14:31:47,052 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 14:31:47,058 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 14:31:47,058 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 14:31:47,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 02:31:47 BoogieIcfgContainer [2022-04-27 14:31:47,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 14:31:47,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 14:31:47,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 14:31:47,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 14:31:47,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 02:31:46" (1/3) ... [2022-04-27 14:31:47,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec90975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 02:31:47, skipping insertion in model container [2022-04-27 14:31:47,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 02:31:46" (2/3) ... [2022-04-27 14:31:47,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec90975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 02:31:47, skipping insertion in model container [2022-04-27 14:31:47,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 02:31:47" (3/3) ... [2022-04-27 14:31:47,065 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound100.c [2022-04-27 14:31:47,083 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-27 14:31:47,083 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 14:31:47,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 14:31:47,183 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@4b58e8f4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13c8e8c3 [2022-04-27 14:31:47,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 14:31:47,200 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 14:31:47,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-27 14:31:47,206 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:31:47,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:31:47,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:31:47,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:31:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1665267581, now seen corresponding path program 1 times [2022-04-27 14:31:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:31:47,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124302752] [2022-04-27 14:31:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:31:47,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:31:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 14:31:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:47,426 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {25#true} is VALID [2022-04-27 14:31:47,427 INFO L290 TraceCheckUtils]: 1: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-27 14:31:47,427 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {25#true} {25#true} #54#return; {25#true} is VALID [2022-04-27 14:31:47,428 INFO L272 TraceCheckUtils]: 0: Hoare triple {25#true} call ULTIMATE.init(); {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 14:31:47,429 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {25#true} is VALID [2022-04-27 14:31:47,429 INFO L290 TraceCheckUtils]: 2: Hoare triple {25#true} assume true; {25#true} is VALID [2022-04-27 14:31:47,430 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {25#true} {25#true} #54#return; {25#true} is VALID [2022-04-27 14:31:47,430 INFO L272 TraceCheckUtils]: 4: Hoare triple {25#true} call #t~ret6 := main(); {25#true} is VALID [2022-04-27 14:31:47,431 INFO L290 TraceCheckUtils]: 5: Hoare triple {25#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4;~y~0 := 0;~x~0 := 0;~c~0 := 0; {25#true} is VALID [2022-04-27 14:31:47,431 INFO L290 TraceCheckUtils]: 6: Hoare triple {25#true} assume !true; {26#false} is VALID [2022-04-27 14:31:47,432 INFO L272 TraceCheckUtils]: 7: Hoare triple {26#false} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {26#false} is VALID [2022-04-27 14:31:47,432 INFO L290 TraceCheckUtils]: 8: Hoare triple {26#false} ~cond := #in~cond; {26#false} is VALID [2022-04-27 14:31:47,432 INFO L290 TraceCheckUtils]: 9: Hoare triple {26#false} assume 0 == ~cond; {26#false} is VALID [2022-04-27 14:31:47,432 INFO L290 TraceCheckUtils]: 10: Hoare triple {26#false} assume !false; {26#false} is VALID [2022-04-27 14:31:47,433 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 14:31:47,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:31:47,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124302752] [2022-04-27 14:31:47,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124302752] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 14:31:47,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 14:31:47,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 14:31:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433961024] [2022-04-27 14:31:47,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:31:47,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-27 14:31:47,443 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:31:47,445 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 14:31:47,463 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 14:31:47,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 14:31:47,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:31:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 14:31:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 14:31:47,488 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 14:31:47,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:47,601 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-04-27 14:31:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 14:31:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-27 14:31:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:31:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 14:31:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-04-27 14:31:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 14:31:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2022-04-27 14:31:47,617 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 50 transitions. [2022-04-27 14:31:47,688 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:31:47,699 INFO L225 Difference]: With dead ends: 39 [2022-04-27 14:31:47,699 INFO L226 Difference]: Without dead ends: 18 [2022-04-27 14:31:47,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 14:31:47,708 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 14:31:47,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 14:31:47,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-04-27 14:31:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-04-27 14:31:47,735 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:31:47,736 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 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 14:31:47,736 INFO L74 IsIncluded]: Start isIncluded. First operand 18 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 14:31:47,737 INFO L87 Difference]: Start difference. First operand 18 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 14:31:47,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:47,744 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-27 14:31:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-27 14:31:47,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:47,745 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:47,746 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 18 states. [2022-04-27 14:31:47,746 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 18 states. [2022-04-27 14:31:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:47,753 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-04-27 14:31:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-27 14:31:47,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:47,753 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:47,753 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:31:47,754 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:31:47,754 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 14:31:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-04-27 14:31:47,756 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2022-04-27 14:31:47,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:31:47,757 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-04-27 14:31:47,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 14:31:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-04-27 14:31:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 14:31:47,758 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:31:47,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:31:47,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 14:31:47,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:31:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:31:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash -318583316, now seen corresponding path program 1 times [2022-04-27 14:31:47,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:31:47,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030940066] [2022-04-27 14:31:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:31:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:31:47,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:31:47,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597899989] [2022-04-27 14:31:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:31:47,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:31:47,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:31:47,790 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 14:31:47,839 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 14:31:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:47,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-27 14:31:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:47,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 14:31:48,003 INFO L272 TraceCheckUtils]: 0: Hoare triple {146#true} call ULTIMATE.init(); {146#true} is VALID [2022-04-27 14:31:48,004 INFO L290 TraceCheckUtils]: 1: Hoare triple {146#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(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {154#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:48,004 INFO L290 TraceCheckUtils]: 2: Hoare triple {154#(<= ~counter~0 0)} assume true; {154#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:48,004 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {154#(<= ~counter~0 0)} {146#true} #54#return; {154#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:48,005 INFO L272 TraceCheckUtils]: 4: Hoare triple {154#(<= ~counter~0 0)} call #t~ret6 := main(); {154#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:48,005 INFO L290 TraceCheckUtils]: 5: Hoare triple {154#(<= ~counter~0 0)} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4;~y~0 := 0;~x~0 := 0;~c~0 := 0; {154#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:48,006 INFO L290 TraceCheckUtils]: 6: Hoare triple {154#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {170#(<= |main_#t~post5| 0)} is VALID [2022-04-27 14:31:48,007 INFO L290 TraceCheckUtils]: 7: Hoare triple {170#(<= |main_#t~post5| 0)} assume !(#t~post5 < 100);havoc #t~post5; {147#false} is VALID [2022-04-27 14:31:48,007 INFO L272 TraceCheckUtils]: 8: Hoare triple {147#false} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {147#false} is VALID [2022-04-27 14:31:48,007 INFO L290 TraceCheckUtils]: 9: Hoare triple {147#false} ~cond := #in~cond; {147#false} is VALID [2022-04-27 14:31:48,008 INFO L290 TraceCheckUtils]: 10: Hoare triple {147#false} assume 0 == ~cond; {147#false} is VALID [2022-04-27 14:31:48,020 INFO L290 TraceCheckUtils]: 11: Hoare triple {147#false} assume !false; {147#false} is VALID [2022-04-27 14:31:48,020 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 14:31:48,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 14:31:48,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:31:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030940066] [2022-04-27 14:31:48,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 14:31:48,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597899989] [2022-04-27 14:31:48,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597899989] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 14:31:48,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 14:31:48,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-27 14:31:48,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656145917] [2022-04-27 14:31:48,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:31:48,027 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 14:31:48,027 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:31:48,027 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 14:31:48,039 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 14:31:48,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-27 14:31:48,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:31:48,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-27 14:31:48,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 14:31:48,041 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 14:31:48,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:48,094 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-27 14:31:48,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-27 14:31:48,095 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 14:31:48,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:31:48,095 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 14:31:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-27 14:31:48,102 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 14:31:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 28 transitions. [2022-04-27 14:31:48,103 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 28 transitions. [2022-04-27 14:31:48,130 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 14:31:48,131 INFO L225 Difference]: With dead ends: 26 [2022-04-27 14:31:48,132 INFO L226 Difference]: Without dead ends: 19 [2022-04-27 14:31:48,132 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 14:31:48,134 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 14:31:48,135 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 14:31:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-27 14:31:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-04-27 14:31:48,144 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:31:48,144 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 14:31:48,145 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 14:31:48,146 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 14:31:48,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:48,148 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-27 14:31:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 14:31:48,149 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:48,149 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:48,150 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 14:31:48,151 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 14:31:48,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:48,154 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-27 14:31:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 14:31:48,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:48,155 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:48,155 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:31:48,155 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:31:48,155 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 14:31:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-04-27 14:31:48,157 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-04-27 14:31:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:31:48,157 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-04-27 14:31:48,157 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 14:31:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 14:31:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 14:31:48,158 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:31:48,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:31:48,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-27 14:31:48,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:31:48,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:31:48,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:31:48,368 INFO L85 PathProgramCache]: Analyzing trace with hash -316795856, now seen corresponding path program 1 times [2022-04-27 14:31:48,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:31:48,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239949485] [2022-04-27 14:31:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:31:48,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:31:48,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:31:48,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955889220] [2022-04-27 14:31:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:31:48,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:31:48,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:31:48,391 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 14:31:48,411 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 14:31:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:48,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-27 14:31:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:48,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 14:31:48,576 INFO L272 TraceCheckUtils]: 0: Hoare triple {288#true} call ULTIMATE.init(); {288#true} is VALID [2022-04-27 14:31:48,576 INFO L290 TraceCheckUtils]: 1: Hoare triple {288#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(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {288#true} is VALID [2022-04-27 14:31:48,576 INFO L290 TraceCheckUtils]: 2: Hoare triple {288#true} assume true; {288#true} is VALID [2022-04-27 14:31:48,576 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {288#true} {288#true} #54#return; {288#true} is VALID [2022-04-27 14:31:48,577 INFO L272 TraceCheckUtils]: 4: Hoare triple {288#true} call #t~ret6 := main(); {288#true} is VALID [2022-04-27 14:31:48,577 INFO L290 TraceCheckUtils]: 5: Hoare triple {288#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4;~y~0 := 0;~x~0 := 0;~c~0 := 0; {308#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:31:48,578 INFO L290 TraceCheckUtils]: 6: Hoare triple {308#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {308#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:31:48,579 INFO L290 TraceCheckUtils]: 7: Hoare triple {308#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 100);havoc #t~post5; {308#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:31:48,580 INFO L272 TraceCheckUtils]: 8: Hoare triple {308#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {318#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 14:31:48,583 INFO L290 TraceCheckUtils]: 9: Hoare triple {318#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {322#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 14:31:48,584 INFO L290 TraceCheckUtils]: 10: Hoare triple {322#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {289#false} is VALID [2022-04-27 14:31:48,584 INFO L290 TraceCheckUtils]: 11: Hoare triple {289#false} assume !false; {289#false} is VALID [2022-04-27 14:31:48,584 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 14:31:48,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 14:31:48,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:31:48,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239949485] [2022-04-27 14:31:48,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 14:31:48,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955889220] [2022-04-27 14:31:48,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955889220] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 14:31:48,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 14:31:48,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-27 14:31:48,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700524476] [2022-04-27 14:31:48,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:31:48,586 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 14:31:48,586 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:31:48,587 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 14:31:48,596 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 14:31:48,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 14:31:48,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:31:48,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 14:31:48,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-27 14:31:48,598 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 14:31:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:48,698 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-04-27 14:31:48,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 14:31:48,698 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 14:31:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:31:48,699 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 14:31:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-27 14:31:48,701 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 14:31:48,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2022-04-27 14:31:48,702 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 31 transitions. [2022-04-27 14:31:48,732 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 14:31:48,734 INFO L225 Difference]: With dead ends: 28 [2022-04-27 14:31:48,734 INFO L226 Difference]: Without dead ends: 25 [2022-04-27 14:31:48,734 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 14:31:48,737 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 14:31:48,738 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 14:31:48,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-27 14:31:48,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-27 14:31:48,749 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:31:48,749 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 14:31:48,752 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 14:31:48,752 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 14:31:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:48,755 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-27 14:31:48,755 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 14:31:48,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:48,755 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:48,756 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 14:31:48,756 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 14:31:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:48,762 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-27 14:31:48,763 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 14:31:48,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:48,763 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:48,763 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:31:48,763 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:31:48,763 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 14:31:48,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-27 14:31:48,766 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2022-04-27 14:31:48,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:31:48,766 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-27 14:31:48,766 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 14:31:48,767 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 14:31:48,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-27 14:31:48,768 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:31:48,768 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 14:31:48,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-27 14:31:48,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-27 14:31:48,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:31:48,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:31:48,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2089867248, now seen corresponding path program 1 times [2022-04-27 14:31:48,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:31:48,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805380276] [2022-04-27 14:31:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:31:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:31:48,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:31:48,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472974092] [2022-04-27 14:31:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:31:48,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:31:48,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:31:48,998 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 14:31:48,999 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 14:31:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:49,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-27 14:31:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:49,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 14:31:49,202 INFO L272 TraceCheckUtils]: 0: Hoare triple {456#true} call ULTIMATE.init(); {456#true} is VALID [2022-04-27 14:31:49,203 INFO L290 TraceCheckUtils]: 1: Hoare triple {456#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(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {464#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:49,204 INFO L290 TraceCheckUtils]: 2: Hoare triple {464#(<= ~counter~0 0)} assume true; {464#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:49,204 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {464#(<= ~counter~0 0)} {456#true} #54#return; {464#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:49,205 INFO L272 TraceCheckUtils]: 4: Hoare triple {464#(<= ~counter~0 0)} call #t~ret6 := main(); {464#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:49,205 INFO L290 TraceCheckUtils]: 5: Hoare triple {464#(<= ~counter~0 0)} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4;~y~0 := 0;~x~0 := 0;~c~0 := 0; {464#(<= ~counter~0 0)} is VALID [2022-04-27 14:31:49,205 INFO L290 TraceCheckUtils]: 6: Hoare triple {464#(<= ~counter~0 0)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {480#(<= ~counter~0 1)} is VALID [2022-04-27 14:31:49,206 INFO L290 TraceCheckUtils]: 7: Hoare triple {480#(<= ~counter~0 1)} assume !!(#t~post5 < 100);havoc #t~post5; {480#(<= ~counter~0 1)} is VALID [2022-04-27 14:31:49,206 INFO L272 TraceCheckUtils]: 8: Hoare triple {480#(<= ~counter~0 1)} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {480#(<= ~counter~0 1)} is VALID [2022-04-27 14:31:49,207 INFO L290 TraceCheckUtils]: 9: Hoare triple {480#(<= ~counter~0 1)} ~cond := #in~cond; {480#(<= ~counter~0 1)} is VALID [2022-04-27 14:31:49,207 INFO L290 TraceCheckUtils]: 10: Hoare triple {480#(<= ~counter~0 1)} assume !(0 == ~cond); {480#(<= ~counter~0 1)} is VALID [2022-04-27 14:31:49,208 INFO L290 TraceCheckUtils]: 11: Hoare triple {480#(<= ~counter~0 1)} assume true; {480#(<= ~counter~0 1)} is VALID [2022-04-27 14:31:49,211 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {480#(<= ~counter~0 1)} {480#(<= ~counter~0 1)} #50#return; {480#(<= ~counter~0 1)} is VALID [2022-04-27 14:31:49,212 INFO L290 TraceCheckUtils]: 13: Hoare triple {480#(<= ~counter~0 1)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 + ~x~0; {480#(<= ~counter~0 1)} is VALID [2022-04-27 14:31:49,212 INFO L290 TraceCheckUtils]: 14: Hoare triple {480#(<= ~counter~0 1)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {505#(<= |main_#t~post5| 1)} is VALID [2022-04-27 14:31:49,213 INFO L290 TraceCheckUtils]: 15: Hoare triple {505#(<= |main_#t~post5| 1)} assume !(#t~post5 < 100);havoc #t~post5; {457#false} is VALID [2022-04-27 14:31:49,213 INFO L272 TraceCheckUtils]: 16: Hoare triple {457#false} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {457#false} is VALID [2022-04-27 14:31:49,213 INFO L290 TraceCheckUtils]: 17: Hoare triple {457#false} ~cond := #in~cond; {457#false} is VALID [2022-04-27 14:31:49,213 INFO L290 TraceCheckUtils]: 18: Hoare triple {457#false} assume 0 == ~cond; {457#false} is VALID [2022-04-27 14:31:49,213 INFO L290 TraceCheckUtils]: 19: Hoare triple {457#false} assume !false; {457#false} is VALID [2022-04-27 14:31:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:31:49,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 14:31:49,364 INFO L290 TraceCheckUtils]: 19: Hoare triple {457#false} assume !false; {457#false} is VALID [2022-04-27 14:31:49,365 INFO L290 TraceCheckUtils]: 18: Hoare triple {457#false} assume 0 == ~cond; {457#false} is VALID [2022-04-27 14:31:49,365 INFO L290 TraceCheckUtils]: 17: Hoare triple {457#false} ~cond := #in~cond; {457#false} is VALID [2022-04-27 14:31:49,365 INFO L272 TraceCheckUtils]: 16: Hoare triple {457#false} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {457#false} is VALID [2022-04-27 14:31:49,365 INFO L290 TraceCheckUtils]: 15: Hoare triple {533#(< |main_#t~post5| 100)} assume !(#t~post5 < 100);havoc #t~post5; {457#false} is VALID [2022-04-27 14:31:49,366 INFO L290 TraceCheckUtils]: 14: Hoare triple {537#(< ~counter~0 100)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {533#(< |main_#t~post5| 100)} is VALID [2022-04-27 14:31:49,366 INFO L290 TraceCheckUtils]: 13: Hoare triple {537#(< ~counter~0 100)} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 + ~x~0; {537#(< ~counter~0 100)} is VALID [2022-04-27 14:31:49,367 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {456#true} {537#(< ~counter~0 100)} #50#return; {537#(< ~counter~0 100)} is VALID [2022-04-27 14:31:49,367 INFO L290 TraceCheckUtils]: 11: Hoare triple {456#true} assume true; {456#true} is VALID [2022-04-27 14:31:49,367 INFO L290 TraceCheckUtils]: 10: Hoare triple {456#true} assume !(0 == ~cond); {456#true} is VALID [2022-04-27 14:31:49,367 INFO L290 TraceCheckUtils]: 9: Hoare triple {456#true} ~cond := #in~cond; {456#true} is VALID [2022-04-27 14:31:49,368 INFO L272 TraceCheckUtils]: 8: Hoare triple {537#(< ~counter~0 100)} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {456#true} is VALID [2022-04-27 14:31:49,368 INFO L290 TraceCheckUtils]: 7: Hoare triple {537#(< ~counter~0 100)} assume !!(#t~post5 < 100);havoc #t~post5; {537#(< ~counter~0 100)} is VALID [2022-04-27 14:31:49,369 INFO L290 TraceCheckUtils]: 6: Hoare triple {562#(< ~counter~0 99)} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {537#(< ~counter~0 100)} is VALID [2022-04-27 14:31:49,369 INFO L290 TraceCheckUtils]: 5: Hoare triple {562#(< ~counter~0 99)} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4;~y~0 := 0;~x~0 := 0;~c~0 := 0; {562#(< ~counter~0 99)} is VALID [2022-04-27 14:31:49,370 INFO L272 TraceCheckUtils]: 4: Hoare triple {562#(< ~counter~0 99)} call #t~ret6 := main(); {562#(< ~counter~0 99)} is VALID [2022-04-27 14:31:49,370 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {562#(< ~counter~0 99)} {456#true} #54#return; {562#(< ~counter~0 99)} is VALID [2022-04-27 14:31:49,372 INFO L290 TraceCheckUtils]: 2: Hoare triple {562#(< ~counter~0 99)} assume true; {562#(< ~counter~0 99)} is VALID [2022-04-27 14:31:49,373 INFO L290 TraceCheckUtils]: 1: Hoare triple {456#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(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {562#(< ~counter~0 99)} is VALID [2022-04-27 14:31:49,373 INFO L272 TraceCheckUtils]: 0: Hoare triple {456#true} call ULTIMATE.init(); {456#true} is VALID [2022-04-27 14:31:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:31:49,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:31:49,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805380276] [2022-04-27 14:31:49,373 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 14:31:49,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472974092] [2022-04-27 14:31:49,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472974092] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-27 14:31:49,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-27 14:31:49,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-27 14:31:49,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438597182] [2022-04-27 14:31:49,374 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-27 14:31:49,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-04-27 14:31:49,375 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:31:49,375 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-27 14:31:49,405 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:31:49,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-27 14:31:49,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:31:49,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-27 14:31:49,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-27 14:31:49,407 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-27 14:31:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:49,573 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2022-04-27 14:31:49,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-27 14:31:49,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 20 [2022-04-27 14:31:49,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:31:49,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-27 14:31:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 62 transitions. [2022-04-27 14:31:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-27 14:31:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 62 transitions. [2022-04-27 14:31:49,579 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 10 states and 62 transitions. [2022-04-27 14:31:49,626 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 14:31:49,627 INFO L225 Difference]: With dead ends: 56 [2022-04-27 14:31:49,627 INFO L226 Difference]: Without dead ends: 49 [2022-04-27 14:31:49,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-04-27 14:31:49,628 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 35 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 14:31:49,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 69 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 14:31:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-04-27 14:31:49,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-04-27 14:31:49,643 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:31:49,644 INFO L82 GeneralOperation]: Start isEquivalent. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-27 14:31:49,644 INFO L74 IsIncluded]: Start isIncluded. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-27 14:31:49,644 INFO L87 Difference]: Start difference. First operand 49 states. Second operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-27 14:31:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:49,646 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-27 14:31:49,647 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-04-27 14:31:49,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:49,647 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:49,647 INFO L74 IsIncluded]: Start isIncluded. First operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 49 states. [2022-04-27 14:31:49,648 INFO L87 Difference]: Start difference. First operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 49 states. [2022-04-27 14:31:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:49,650 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2022-04-27 14:31:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2022-04-27 14:31:49,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:49,651 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:49,651 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:31:49,651 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:31:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-27 14:31:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-04-27 14:31:49,653 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 20 [2022-04-27 14:31:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:31:49,654 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-04-27 14:31:49,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-27 14:31:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-04-27 14:31:49,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-04-27 14:31:49,654 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 14:31:49,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 14:31:49,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-27 14:31:49,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:31:49,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 14:31:49,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 14:31:49,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2088079788, now seen corresponding path program 1 times [2022-04-27 14:31:49,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 14:31:49,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202683414] [2022-04-27 14:31:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:31:49,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 14:31:49,890 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 14:31:49,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048464854] [2022-04-27 14:31:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 14:31:49,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:31:49,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 14:31:49,892 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 14:31:49,905 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 14:31:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:49,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-27 14:31:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 14:31:49,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 14:31:50,051 INFO L272 TraceCheckUtils]: 0: Hoare triple {830#true} call ULTIMATE.init(); {830#true} is VALID [2022-04-27 14:31:50,052 INFO L290 TraceCheckUtils]: 1: Hoare triple {830#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(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {830#true} is VALID [2022-04-27 14:31:50,052 INFO L290 TraceCheckUtils]: 2: Hoare triple {830#true} assume true; {830#true} is VALID [2022-04-27 14:31:50,052 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {830#true} {830#true} #54#return; {830#true} is VALID [2022-04-27 14:31:50,052 INFO L272 TraceCheckUtils]: 4: Hoare triple {830#true} call #t~ret6 := main(); {830#true} is VALID [2022-04-27 14:31:50,053 INFO L290 TraceCheckUtils]: 5: Hoare triple {830#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4;~y~0 := 0;~x~0 := 0;~c~0 := 0; {850#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:31:50,053 INFO L290 TraceCheckUtils]: 6: Hoare triple {850#(and (= main_~x~0 0) (= main_~y~0 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {850#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:31:50,054 INFO L290 TraceCheckUtils]: 7: Hoare triple {850#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(#t~post5 < 100);havoc #t~post5; {850#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:31:50,054 INFO L272 TraceCheckUtils]: 8: Hoare triple {850#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {830#true} is VALID [2022-04-27 14:31:50,054 INFO L290 TraceCheckUtils]: 9: Hoare triple {830#true} ~cond := #in~cond; {830#true} is VALID [2022-04-27 14:31:50,054 INFO L290 TraceCheckUtils]: 10: Hoare triple {830#true} assume !(0 == ~cond); {830#true} is VALID [2022-04-27 14:31:50,054 INFO L290 TraceCheckUtils]: 11: Hoare triple {830#true} assume true; {830#true} is VALID [2022-04-27 14:31:50,055 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {830#true} {850#(and (= main_~x~0 0) (= main_~y~0 0))} #50#return; {850#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-27 14:31:50,058 INFO L290 TraceCheckUtils]: 13: Hoare triple {850#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 + ~x~0; {875#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} is VALID [2022-04-27 14:31:50,059 INFO L290 TraceCheckUtils]: 14: Hoare triple {875#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {875#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} is VALID [2022-04-27 14:31:50,059 INFO L290 TraceCheckUtils]: 15: Hoare triple {875#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} assume !!(#t~post5 < 100);havoc #t~post5; {875#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} is VALID [2022-04-27 14:31:50,060 INFO L272 TraceCheckUtils]: 16: Hoare triple {875#(and (= main_~y~0 1) (= (+ main_~x~0 (* (- 1) main_~y~0 main_~y~0)) 0))} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {885#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 14:31:50,061 INFO L290 TraceCheckUtils]: 17: Hoare triple {885#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {889#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 14:31:50,061 INFO L290 TraceCheckUtils]: 18: Hoare triple {889#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {831#false} is VALID [2022-04-27 14:31:50,061 INFO L290 TraceCheckUtils]: 19: Hoare triple {831#false} assume !false; {831#false} is VALID [2022-04-27 14:31:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 14:31:50,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-27 14:31:50,194 INFO L290 TraceCheckUtils]: 19: Hoare triple {831#false} assume !false; {831#false} is VALID [2022-04-27 14:31:50,195 INFO L290 TraceCheckUtils]: 18: Hoare triple {889#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {831#false} is VALID [2022-04-27 14:31:50,195 INFO L290 TraceCheckUtils]: 17: Hoare triple {885#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {889#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 14:31:50,196 INFO L272 TraceCheckUtils]: 16: Hoare triple {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {885#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 14:31:50,197 INFO L290 TraceCheckUtils]: 15: Hoare triple {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} assume !!(#t~post5 < 100);havoc #t~post5; {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-27 14:31:50,199 INFO L290 TraceCheckUtils]: 14: Hoare triple {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-27 14:31:50,687 INFO L290 TraceCheckUtils]: 13: Hoare triple {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 + ~x~0; {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-27 14:31:50,688 INFO L284 TraceCheckUtils]: 12: Hoare quadruple {830#true} {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} #50#return; {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-27 14:31:50,688 INFO L290 TraceCheckUtils]: 11: Hoare triple {830#true} assume true; {830#true} is VALID [2022-04-27 14:31:50,688 INFO L290 TraceCheckUtils]: 10: Hoare triple {830#true} assume !(0 == ~cond); {830#true} is VALID [2022-04-27 14:31:50,689 INFO L290 TraceCheckUtils]: 9: Hoare triple {830#true} ~cond := #in~cond; {830#true} is VALID [2022-04-27 14:31:50,689 INFO L272 TraceCheckUtils]: 8: Hoare triple {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} call __VERIFIER_assert((if 0 == 6 * ~x~0 - 2 * ~y~0 * ~y~0 * ~y~0 - 3 * ~y~0 * ~y~0 - ~y~0 then 1 else 0)); {830#true} is VALID [2022-04-27 14:31:50,689 INFO L290 TraceCheckUtils]: 7: Hoare triple {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} assume !!(#t~post5 < 100);havoc #t~post5; {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-27 14:31:50,698 INFO L290 TraceCheckUtils]: 6: Hoare triple {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} #t~post5 := ~counter~0;~counter~0 := 1 + #t~post5; {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-27 14:31:50,698 INFO L290 TraceCheckUtils]: 5: Hoare triple {830#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4;~y~0 := 0;~x~0 := 0;~c~0 := 0; {905#(= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6))} is VALID [2022-04-27 14:31:50,698 INFO L272 TraceCheckUtils]: 4: Hoare triple {830#true} call #t~ret6 := main(); {830#true} is VALID [2022-04-27 14:31:50,699 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {830#true} {830#true} #54#return; {830#true} is VALID [2022-04-27 14:31:50,699 INFO L290 TraceCheckUtils]: 2: Hoare triple {830#true} assume true; {830#true} is VALID [2022-04-27 14:31:50,699 INFO L290 TraceCheckUtils]: 1: Hoare triple {830#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(9, 2);call #Ultimate.allocInit(12, 3);~counter~0 := 0; {830#true} is VALID [2022-04-27 14:31:50,699 INFO L272 TraceCheckUtils]: 0: Hoare triple {830#true} call ULTIMATE.init(); {830#true} is VALID [2022-04-27 14:31:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-27 14:31:50,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 14:31:50,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202683414] [2022-04-27 14:31:50,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 14:31:50,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048464854] [2022-04-27 14:31:50,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048464854] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-27 14:31:50,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-27 14:31:50,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-27 14:31:50,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753770584] [2022-04-27 14:31:50,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 14:31:50,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-27 14:31:50,701 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 14:31:50,702 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:31:52,733 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 17 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-27 14:31:52,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 14:31:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 14:31:52,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 14:31:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-27 14:31:52,734 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:31:52,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:52,861 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-04-27 14:31:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 14:31:52,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-04-27 14:31:52,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 14:31:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:31:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2022-04-27 14:31:52,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:31:52,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2022-04-27 14:31:52,864 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 19 transitions. [2022-04-27 14:31:54,883 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 19 edges. 18 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-27 14:31:54,883 INFO L225 Difference]: With dead ends: 45 [2022-04-27 14:31:54,883 INFO L226 Difference]: Without dead ends: 0 [2022-04-27 14:31:54,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-27 14:31:54,884 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 14:31:54,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 14:31:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-27 14:31:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-27 14:31:54,885 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 14:31:54,885 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 14:31:54,885 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 14:31:54,885 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 14:31:54,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:54,886 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 14:31:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 14:31:54,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:54,886 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:54,886 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 14:31:54,886 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 14:31:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 14:31:54,886 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-27 14:31:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 14:31:54,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:54,886 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 14:31:54,886 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 14:31:54,886 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 14:31:54,887 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 14:31:54,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-27 14:31:54,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-04-27 14:31:54,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 14:31:54,887 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-27 14:31:54,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 14:31:54,887 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-27 14:31:54,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 14:31:54,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 14:31:54,908 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 14:31:55,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 14:31:55,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-27 14:31:55,174 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-04-27 14:31:55,174 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-04-27 14:31:55,174 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-04-27 14:31:55,174 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-04-27 14:31:55,174 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-04-27 14:31:55,174 INFO L899 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-04-27 14:31:55,174 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-04-27 14:31:55,174 INFO L895 garLoopResultBuilder]: At program point mainENTRY(lines 18 39) the Hoare annotation is: (or (= ~counter~0 |old(~counter~0)|) (not (<= |old(~counter~0)| 0))) [2022-04-27 14:31:55,175 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (or (= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6)) (not (<= |old(~counter~0)| 0))) [2022-04-27 14:31:55,175 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-04-27 14:31:55,175 INFO L899 garLoopResultBuilder]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2022-04-27 14:31:55,175 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 18 39) no Hoare annotation was computed. [2022-04-27 14:31:55,175 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6)) (not (<= |old(~counter~0)| 0))) [2022-04-27 14:31:55,175 INFO L895 garLoopResultBuilder]: At program point L27-4(lines 27 36) the Hoare annotation is: (or (= (+ (* 3 (* main_~y~0 main_~y~0)) main_~y~0 (* (* main_~y~0 main_~y~0 main_~y~0) 2)) (* main_~x~0 6)) (not (<= |old(~counter~0)| 0))) [2022-04-27 14:31:55,175 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 18 39) no Hoare annotation was computed. [2022-04-27 14:31:55,175 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2022-04-27 14:31:55,175 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-27 14:31:55,175 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-27 14:31:55,175 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-27 14:31:55,175 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-27 14:31:55,175 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (<= ~counter~0 0) [2022-04-27 14:31:55,176 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-27 14:31:55,176 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-27 14:31:55,176 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-04-27 14:31:55,176 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-04-27 14:31:55,176 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-04-27 14:31:55,176 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-04-27 14:31:55,176 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-04-27 14:31:55,176 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-04-27 14:31:55,179 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-27 14:31:55,180 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 14:31:55,183 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-27 14:31:55,183 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 14:31:55,183 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-27 14:31:55,184 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 14:31:55,184 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-27 14:31:55,184 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-27 14:31:55,185 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 14:31:55,185 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-27 14:31:55,185 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L27-1 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L10-2 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-27 14:31:55,186 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-27 14:31:55,187 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 14:31:55,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 02:31:55 BoogieIcfgContainer [2022-04-27 14:31:55,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 14:31:55,195 INFO L158 Benchmark]: Toolchain (without parser) took 8644.75ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 120.8MB in the beginning and 164.7MB in the end (delta: -44.0MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 14:31:55,195 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 137.0MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 14:31:55,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.18ms. Allocated memory is still 172.0MB. Free memory was 120.6MB in the beginning and 146.1MB in the end (delta: -25.5MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. [2022-04-27 14:31:55,195 INFO L158 Benchmark]: Boogie Preprocessor took 39.76ms. Allocated memory is still 172.0MB. Free memory was 146.1MB in the beginning and 144.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 14:31:55,196 INFO L158 Benchmark]: RCFGBuilder took 269.51ms. Allocated memory is still 172.0MB. Free memory was 144.6MB in the beginning and 133.5MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-27 14:31:55,197 INFO L158 Benchmark]: TraceAbstraction took 8133.14ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 133.1MB in the beginning and 164.7MB in the end (delta: -31.6MB). Peak memory consumption was 4.3MB. Max. memory is 8.0GB. [2022-04-27 14:31:55,199 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 0.13ms. Allocated memory is still 172.0MB. Free memory was 137.1MB in the beginning and 137.0MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.18ms. Allocated memory is still 172.0MB. Free memory was 120.6MB in the beginning and 146.1MB in the end (delta: -25.5MB). Peak memory consumption was 12.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.76ms. Allocated memory is still 172.0MB. Free memory was 146.1MB in the beginning and 144.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 269.51ms. Allocated memory is still 172.0MB. Free memory was 144.6MB in the beginning and 133.5MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 8133.14ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 133.1MB in the beginning and 164.7MB in the end (delta: -31.6MB). Peak memory consumption was 4.3MB. 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: 12]: 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: 8.0s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 89 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 19 PreInvPairs, 32 NumberOfFragments, 89 HoareAnnotationTreeSize, 19 FomulaSimplifications, 203 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 59 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 5 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 11/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 3 * (y * y) + y + y * y * y * 2 == x * 6 || !(\old(counter) <= 0) RESULT: Ultimate proved your program to be correct! [2022-04-27 14:31:55,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...