/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 10:47:41,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 10:47:41,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 10:47:41,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 10:47:41,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 10:47:41,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 10:47:41,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 10:47:41,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 10:47:41,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 10:47:41,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 10:47:41,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 10:47:41,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 10:47:41,089 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 10:47:41,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 10:47:41,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 10:47:41,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 10:47:41,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 10:47:41,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 10:47:41,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 10:47:41,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 10:47:41,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 10:47:41,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 10:47:41,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 10:47:41,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 10:47:41,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 10:47:41,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 10:47:41,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 10:47:41,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 10:47:41,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 10:47:41,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 10:47:41,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 10:47:41,118 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 10:47:41,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 10:47:41,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 10:47:41,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 10:47:41,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 10:47:41,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 10:47:41,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 10:47:41,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 10:47:41,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 10:47:41,119 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 10:47:41,119 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 10:47:41,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 10:47:41,120 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 10:47:41,120 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 10:47:41,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 10:47:41,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 10:47:41,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 10:47:41,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 10:47:41,333 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 10:47:41,334 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3-ll.c [2022-04-28 10:47:41,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a6ccfb88/615b931955ae42cf873321f3c8ea7f5c/FLAGc12ccdcea [2022-04-28 10:47:41,721 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 10:47:41,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3-ll.c [2022-04-28 10:47:41,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a6ccfb88/615b931955ae42cf873321f3c8ea7f5c/FLAGc12ccdcea [2022-04-28 10:47:41,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a6ccfb88/615b931955ae42cf873321f3c8ea7f5c [2022-04-28 10:47:41,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 10:47:41,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 10:47:41,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 10:47:41,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 10:47:41,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 10:47:41,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184b5c49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41, skipping insertion in model container [2022-04-28 10:47:41,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 10:47:41,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 10:47:41,882 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/geo3-ll.c[525,538] [2022-04-28 10:47:41,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 10:47:41,901 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 10:47:41,909 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/geo3-ll.c[525,538] [2022-04-28 10:47:41,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 10:47:41,925 INFO L208 MainTranslator]: Completed translation [2022-04-28 10:47:41,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41 WrapperNode [2022-04-28 10:47:41,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 10:47:41,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 10:47:41,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 10:47:41,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 10:47:41,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 10:47:41,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 10:47:41,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 10:47:41,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 10:47:41,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41" (1/1) ... [2022-04-28 10:47:41,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 10:47:41,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 10:47:41,980 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) [2022-04-28 10:47:41,987 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 [2022-04-28 10:47:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 10:47:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 10:47:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 10:47:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 10:47:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 10:47:42,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 10:47:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 10:47:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 10:47:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 10:47:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 10:47:42,059 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 10:47:42,060 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 10:47:42,203 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 10:47:42,211 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 10:47:42,211 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 10:47:42,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 10:47:42 BoogieIcfgContainer [2022-04-28 10:47:42,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 10:47:42,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 10:47:42,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 10:47:42,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 10:47:42,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 10:47:41" (1/3) ... [2022-04-28 10:47:42,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393c5663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 10:47:42, skipping insertion in model container [2022-04-28 10:47:42,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 10:47:41" (2/3) ... [2022-04-28 10:47:42,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393c5663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 10:47:42, skipping insertion in model container [2022-04-28 10:47:42,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 10:47:42" (3/3) ... [2022-04-28 10:47:42,221 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll.c [2022-04-28 10:47:42,235 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 10:47:42,235 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 10:47:42,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 10:47:42,272 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3985673c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5fd61554 [2022-04-28 10:47:42,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 10:47:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-04-28 10:47:42,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 10:47:42,284 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 10:47:42,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 10:47:42,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 10:47:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 10:47:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1469283919, now seen corresponding path program 1 times [2022-04-28 10:47:42,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 10:47:42,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1109438250] [2022-04-28 10:47:42,302 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 10:47:42,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1469283919, now seen corresponding path program 2 times [2022-04-28 10:47:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 10:47:42,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166388393] [2022-04-28 10:47:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 10:47:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 10:47:42,370 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 10:47:42,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1059438785] [2022-04-28 10:47:42,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 10:47:42,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 10:47:42,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 10:47:42,373 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) [2022-04-28 10:47:42,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 10:47:42,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 10:47:42,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 10:47:42,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2022-04-28 10:47:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 10:47:42,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 10:47:42,503 INFO L272 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {24#true} is VALID [2022-04-28 10:47:42,504 INFO L290 TraceCheckUtils]: 1: Hoare triple {24#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-28 10:47:42,504 INFO L290 TraceCheckUtils]: 2: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-28 10:47:42,504 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24#true} {24#true} #53#return; {24#true} is VALID [2022-04-28 10:47:42,504 INFO L272 TraceCheckUtils]: 4: Hoare triple {24#true} call #t~ret7 := main(); {24#true} is VALID [2022-04-28 10:47:42,505 INFO L290 TraceCheckUtils]: 5: Hoare triple {24#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {24#true} is VALID [2022-04-28 10:47:42,505 INFO L290 TraceCheckUtils]: 6: Hoare triple {24#true} assume false; {25#false} is VALID [2022-04-28 10:47:42,505 INFO L272 TraceCheckUtils]: 7: Hoare triple {25#false} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {25#false} is VALID [2022-04-28 10:47:42,506 INFO L290 TraceCheckUtils]: 8: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2022-04-28 10:47:42,506 INFO L290 TraceCheckUtils]: 9: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2022-04-28 10:47:42,506 INFO L290 TraceCheckUtils]: 10: Hoare triple {25#false} assume !false; {25#false} is VALID [2022-04-28 10:47:42,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 10:47:42,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 10:47:42,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 10:47:42,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166388393] [2022-04-28 10:47:42,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 10:47:42,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059438785] [2022-04-28 10:47:42,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059438785] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 10:47:42,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 10:47:42,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-28 10:47:42,511 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 10:47:42,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1109438250] [2022-04-28 10:47:42,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1109438250] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 10:47:42,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 10:47:42,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-28 10:47:42,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580130151] [2022-04-28 10:47:42,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 10:47:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 10:47:42,518 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 10:47:42,521 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:42,532 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:47:42,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-28 10:47:42,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 10:47:42,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-28 10:47:42,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-28 10:47:42,556 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:42,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:47:42,627 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-04-28 10:47:42,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-28 10:47:42,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 10:47:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 10:47:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2022-04-28 10:47:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2022-04-28 10:47:42,646 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 2 states and 46 transitions. [2022-04-28 10:47:42,707 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:47:42,714 INFO L225 Difference]: With dead ends: 36 [2022-04-28 10:47:42,714 INFO L226 Difference]: Without dead ends: 16 [2022-04-28 10:47:42,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-28 10:47:42,721 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 10:47:42,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 10:47:42,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-28 10:47:42,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-04-28 10:47:42,751 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 10:47:42,751 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-04-28 10:47:42,752 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-04-28 10:47:42,752 INFO L87 Difference]: Start difference. First operand 16 states. Second operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-04-28 10:47:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:47:42,757 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-04-28 10:47:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-28 10:47:42,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 10:47:42,758 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 10:47:42,758 INFO L74 IsIncluded]: Start isIncluded. First operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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 16 states. [2022-04-28 10:47:42,759 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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 16 states. [2022-04-28 10:47:42,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:47:42,761 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-04-28 10:47:42,761 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-28 10:47:42,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 10:47:42,762 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 10:47:42,762 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 10:47:42,763 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 10:47:42,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 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) [2022-04-28 10:47:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-04-28 10:47:42,769 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-04-28 10:47:42,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 10:47:42,773 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-04-28 10:47:42,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:42,777 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 16 states and 17 transitions. [2022-04-28 10:47:42,795 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:47:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-04-28 10:47:42,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 10:47:42,797 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 10:47:42,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 10:47:42,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 10:47:43,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-04-28 10:47:43,004 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 10:47:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 10:47:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1467496459, now seen corresponding path program 1 times [2022-04-28 10:47:43,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 10:47:43,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1198950602] [2022-04-28 10:47:43,005 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 10:47:43,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1467496459, now seen corresponding path program 2 times [2022-04-28 10:47:43,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 10:47:43,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070145116] [2022-04-28 10:47:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 10:47:43,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 10:47:43,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 10:47:43,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835959270] [2022-04-28 10:47:43,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 10:47:43,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 10:47:43,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 10:47:43,022 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) [2022-04-28 10:47:43,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 10:47:43,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 10:47:43,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 10:47:43,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-28 10:47:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 10:47:43,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 10:47:43,268 INFO L272 TraceCheckUtils]: 0: Hoare triple {194#true} call ULTIMATE.init(); {194#true} is VALID [2022-04-28 10:47:43,268 INFO L290 TraceCheckUtils]: 1: Hoare triple {194#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {194#true} is VALID [2022-04-28 10:47:43,269 INFO L290 TraceCheckUtils]: 2: Hoare triple {194#true} assume true; {194#true} is VALID [2022-04-28 10:47:43,269 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {194#true} {194#true} #53#return; {194#true} is VALID [2022-04-28 10:47:43,270 INFO L272 TraceCheckUtils]: 4: Hoare triple {194#true} call #t~ret7 := main(); {194#true} is VALID [2022-04-28 10:47:43,272 INFO L290 TraceCheckUtils]: 5: Hoare triple {194#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {214#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 10:47:43,273 INFO L290 TraceCheckUtils]: 6: Hoare triple {214#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !false; {214#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 10:47:43,275 INFO L272 TraceCheckUtils]: 7: Hoare triple {214#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {221#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 10:47:43,275 INFO L290 TraceCheckUtils]: 8: Hoare triple {221#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {225#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 10:47:43,276 INFO L290 TraceCheckUtils]: 9: Hoare triple {225#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {195#false} is VALID [2022-04-28 10:47:43,277 INFO L290 TraceCheckUtils]: 10: Hoare triple {195#false} assume !false; {195#false} is VALID [2022-04-28 10:47:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 10:47:43,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 10:47:43,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 10:47:43,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070145116] [2022-04-28 10:47:43,277 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 10:47:43,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835959270] [2022-04-28 10:47:43,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835959270] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 10:47:43,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 10:47:43,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 10:47:43,278 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 10:47:43,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1198950602] [2022-04-28 10:47:43,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1198950602] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 10:47:43,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 10:47:43,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 10:47:43,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886929139] [2022-04-28 10:47:43,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 10:47:43,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 10:47:43,282 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 10:47:43,282 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:43,293 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:47:43,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 10:47:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 10:47:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 10:47:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 10:47:43,294 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:47:43,383 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-04-28 10:47:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 10:47:43,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 10:47:43,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 10:47:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:43,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2022-04-28 10:47:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2022-04-28 10:47:43,386 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 28 transitions. [2022-04-28 10:47:43,409 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 28 edges. 28 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:47:43,410 INFO L225 Difference]: With dead ends: 26 [2022-04-28 10:47:43,410 INFO L226 Difference]: Without dead ends: 23 [2022-04-28 10:47:43,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 10:47:43,411 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 49 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 [2022-04-28 10:47:43,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 49 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 10:47:43,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-28 10:47:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-28 10:47:43,419 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 10:47:43,419 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-04-28 10:47:43,420 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-04-28 10:47:43,420 INFO L87 Difference]: Start difference. First operand 23 states. Second operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-04-28 10:47:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:47:43,421 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-04-28 10:47:43,421 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-04-28 10:47:43,421 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 10:47:43,422 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 10:47:43,422 INFO L74 IsIncluded]: Start isIncluded. First operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 23 states. [2022-04-28 10:47:43,422 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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 23 states. [2022-04-28 10:47:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:47:43,423 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-04-28 10:47:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-04-28 10:47:43,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 10:47:43,424 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 10:47:43,424 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 10:47:43,424 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 10:47:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2022-04-28 10:47:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-04-28 10:47:43,425 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2022-04-28 10:47:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 10:47:43,425 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-04-28 10:47:43,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 10:47:43,426 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 24 transitions. [2022-04-28 10:47:43,444 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 24 edges. 24 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:47:43,444 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-04-28 10:47:43,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-28 10:47:43,445 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 10:47:43,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 10:47:43,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 10:47:43,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-04-28 10:47:43,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 10:47:43,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 10:47:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1366100723, now seen corresponding path program 1 times [2022-04-28 10:47:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 10:47:43,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1048601080] [2022-04-28 10:47:46,980 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 10:47:46,980 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 10:47:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1366100723, now seen corresponding path program 2 times [2022-04-28 10:47:46,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 10:47:46,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452833329] [2022-04-28 10:47:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 10:47:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 10:47:46,990 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 10:47:46,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407787001] [2022-04-28 10:47:46,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 10:47:46,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 10:47:46,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 10:47:47,008 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) [2022-04-28 10:47:47,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 10:47:47,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 10:47:47,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 10:47:47,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-28 10:47:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 10:47:47,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 10:47:47,407 INFO L272 TraceCheckUtils]: 0: Hoare triple {377#true} call ULTIMATE.init(); {377#true} is VALID [2022-04-28 10:47:47,407 INFO L290 TraceCheckUtils]: 1: Hoare triple {377#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {377#true} is VALID [2022-04-28 10:47:47,407 INFO L290 TraceCheckUtils]: 2: Hoare triple {377#true} assume true; {377#true} is VALID [2022-04-28 10:47:47,408 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {377#true} {377#true} #53#return; {377#true} is VALID [2022-04-28 10:47:47,408 INFO L272 TraceCheckUtils]: 4: Hoare triple {377#true} call #t~ret7 := main(); {377#true} is VALID [2022-04-28 10:47:47,409 INFO L290 TraceCheckUtils]: 5: Hoare triple {377#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {397#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 10:47:47,409 INFO L290 TraceCheckUtils]: 6: Hoare triple {397#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !false; {397#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 10:47:47,409 INFO L272 TraceCheckUtils]: 7: Hoare triple {397#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {377#true} is VALID [2022-04-28 10:47:47,410 INFO L290 TraceCheckUtils]: 8: Hoare triple {377#true} ~cond := #in~cond; {407#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 10:47:47,411 INFO L290 TraceCheckUtils]: 9: Hoare triple {407#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {411#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:47:47,411 INFO L290 TraceCheckUtils]: 10: Hoare triple {411#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {411#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:47:47,412 INFO L284 TraceCheckUtils]: 11: Hoare quadruple {411#(not (= |__VERIFIER_assert_#in~cond| 0))} {397#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} #49#return; {397#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 10:47:47,413 INFO L290 TraceCheckUtils]: 12: Hoare triple {397#(and (= main_~y~0 1) (= main_~a~0 main_~x~0) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {421#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 10:47:47,413 INFO L290 TraceCheckUtils]: 13: Hoare triple {421#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} assume !false; {421#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} is VALID [2022-04-28 10:47:47,430 INFO L272 TraceCheckUtils]: 14: Hoare triple {421#(and (= main_~z~0 main_~y~0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0)) (= (* main_~a~0 main_~z~0) main_~az~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {428#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 10:47:47,431 INFO L290 TraceCheckUtils]: 15: Hoare triple {428#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {432#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 10:47:47,431 INFO L290 TraceCheckUtils]: 16: Hoare triple {432#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {378#false} is VALID [2022-04-28 10:47:47,431 INFO L290 TraceCheckUtils]: 17: Hoare triple {378#false} assume !false; {378#false} is VALID [2022-04-28 10:47:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 10:47:47,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 10:48:21,651 INFO L290 TraceCheckUtils]: 17: Hoare triple {378#false} assume !false; {378#false} is VALID [2022-04-28 10:48:21,651 INFO L290 TraceCheckUtils]: 16: Hoare triple {432#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {378#false} is VALID [2022-04-28 10:48:21,652 INFO L290 TraceCheckUtils]: 15: Hoare triple {428#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {432#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 10:48:21,653 INFO L272 TraceCheckUtils]: 14: Hoare triple {448#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {428#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 10:48:21,653 INFO L290 TraceCheckUtils]: 13: Hoare triple {448#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !false; {448#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 10:48:21,667 INFO L290 TraceCheckUtils]: 12: Hoare triple {455#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {448#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 10:48:21,671 INFO L284 TraceCheckUtils]: 11: Hoare quadruple {411#(not (= |__VERIFIER_assert_#in~cond| 0))} {377#true} #49#return; {455#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} is VALID [2022-04-28 10:48:21,671 INFO L290 TraceCheckUtils]: 10: Hoare triple {411#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {411#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:48:21,672 INFO L290 TraceCheckUtils]: 9: Hoare triple {468#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {411#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:48:21,672 INFO L290 TraceCheckUtils]: 8: Hoare triple {377#true} ~cond := #in~cond; {468#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 10:48:21,672 INFO L272 TraceCheckUtils]: 7: Hoare triple {377#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {377#true} is VALID [2022-04-28 10:48:21,673 INFO L290 TraceCheckUtils]: 6: Hoare triple {377#true} assume !false; {377#true} is VALID [2022-04-28 10:48:21,673 INFO L290 TraceCheckUtils]: 5: Hoare triple {377#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {377#true} is VALID [2022-04-28 10:48:21,673 INFO L272 TraceCheckUtils]: 4: Hoare triple {377#true} call #t~ret7 := main(); {377#true} is VALID [2022-04-28 10:48:21,673 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {377#true} {377#true} #53#return; {377#true} is VALID [2022-04-28 10:48:21,673 INFO L290 TraceCheckUtils]: 2: Hoare triple {377#true} assume true; {377#true} is VALID [2022-04-28 10:48:21,673 INFO L290 TraceCheckUtils]: 1: Hoare triple {377#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {377#true} is VALID [2022-04-28 10:48:21,673 INFO L272 TraceCheckUtils]: 0: Hoare triple {377#true} call ULTIMATE.init(); {377#true} is VALID [2022-04-28 10:48:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 10:48:21,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 10:48:21,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452833329] [2022-04-28 10:48:21,674 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 10:48:21,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407787001] [2022-04-28 10:48:21,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407787001] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 10:48:21,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 10:48:21,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-04-28 10:48:21,675 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 10:48:21,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1048601080] [2022-04-28 10:48:21,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1048601080] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 10:48:21,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 10:48:21,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-28 10:48:21,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116866083] [2022-04-28 10:48:21,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 10:48:21,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-28 10:48:21,676 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 10:48:21,676 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 10:48:21,713 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:48:21,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-28 10:48:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 10:48:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-28 10:48:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-04-28 10:48:21,714 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 10:48:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:48:22,446 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-04-28 10:48:22,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 10:48:22,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-04-28 10:48:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 10:48:22,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 10:48:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2022-04-28 10:48:22,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 10:48:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2022-04-28 10:48:22,450 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 32 transitions. [2022-04-28 10:48:22,528 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:48:22,529 INFO L225 Difference]: With dead ends: 33 [2022-04-28 10:48:22,529 INFO L226 Difference]: Without dead ends: 30 [2022-04-28 10:48:22,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-04-28 10:48:22,530 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-28 10:48:22,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 73 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-28 10:48:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-28 10:48:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-28 10:48:22,539 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 10:48:22,540 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 10:48:22,541 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 10:48:22,541 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 10:48:22,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:48:22,543 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-04-28 10:48:22,543 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-04-28 10:48:22,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 10:48:22,543 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 10:48:22,543 INFO L74 IsIncluded]: Start isIncluded. First operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 30 states. [2022-04-28 10:48:22,544 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 30 states. [2022-04-28 10:48:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:48:22,545 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-04-28 10:48:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-04-28 10:48:22,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 10:48:22,546 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 10:48:22,546 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 10:48:22,546 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 10:48:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 10:48:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-04-28 10:48:22,547 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 18 [2022-04-28 10:48:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 10:48:22,547 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-04-28 10:48:22,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-28 10:48:22,548 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 30 states and 31 transitions. [2022-04-28 10:48:22,616 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 31 edges. 31 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:48:22,617 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-04-28 10:48:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-28 10:48:22,617 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 10:48:22,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 10:48:22,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-28 10:48:22,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 10:48:22,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 10:48:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 10:48:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash 673668341, now seen corresponding path program 3 times [2022-04-28 10:48:22,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 10:48:22,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1031141912] [2022-04-28 10:48:24,868 INFO L97 AcceleratorQvasr]: Qvasr could not accelerate loop because java.lang.UnsupportedOperationException: Cannot deal with arrays. [2022-04-28 10:48:24,869 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-28 10:48:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 673668341, now seen corresponding path program 4 times [2022-04-28 10:48:24,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 10:48:24,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918836918] [2022-04-28 10:48:24,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 10:48:24,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 10:48:24,879 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 10:48:24,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980979436] [2022-04-28 10:48:24,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-28 10:48:24,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 10:48:24,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 10:48:24,881 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) [2022-04-28 10:48:24,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-28 10:48:27,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-28 10:48:27,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 10:48:27,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-28 10:48:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-04-28 10:48:29,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 10:48:41,358 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 10:48:49,524 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 10:48:53,977 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 10:49:15,848 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 10:49:20,965 WARN L828 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-28 10:49:30,939 INFO L272 TraceCheckUtils]: 0: Hoare triple {685#true} call ULTIMATE.init(); {685#true} is VALID [2022-04-28 10:49:30,940 INFO L290 TraceCheckUtils]: 1: Hoare triple {685#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {685#true} is VALID [2022-04-28 10:49:30,940 INFO L290 TraceCheckUtils]: 2: Hoare triple {685#true} assume true; {685#true} is VALID [2022-04-28 10:49:30,940 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {685#true} {685#true} #53#return; {685#true} is VALID [2022-04-28 10:49:30,940 INFO L272 TraceCheckUtils]: 4: Hoare triple {685#true} call #t~ret7 := main(); {685#true} is VALID [2022-04-28 10:49:30,940 INFO L290 TraceCheckUtils]: 5: Hoare triple {685#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {685#true} is VALID [2022-04-28 10:49:30,940 INFO L290 TraceCheckUtils]: 6: Hoare triple {685#true} assume !false; {685#true} is VALID [2022-04-28 10:49:30,940 INFO L272 TraceCheckUtils]: 7: Hoare triple {685#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {685#true} is VALID [2022-04-28 10:49:30,941 INFO L290 TraceCheckUtils]: 8: Hoare triple {685#true} ~cond := #in~cond; {714#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 10:49:30,941 INFO L290 TraceCheckUtils]: 9: Hoare triple {714#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {718#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:49:30,942 INFO L290 TraceCheckUtils]: 10: Hoare triple {718#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {718#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:49:30,944 INFO L284 TraceCheckUtils]: 11: Hoare quadruple {718#(not (= |__VERIFIER_assert_#in~cond| 0))} {685#true} #49#return; {725#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 10:49:32,946 WARN L290 TraceCheckUtils]: 12: Hoare triple {725#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {729#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is UNKNOWN [2022-04-28 10:49:32,947 INFO L290 TraceCheckUtils]: 13: Hoare triple {729#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} assume !false; {729#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-28 10:49:32,948 INFO L272 TraceCheckUtils]: 14: Hoare triple {729#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {685#true} is VALID [2022-04-28 10:49:32,948 INFO L290 TraceCheckUtils]: 15: Hoare triple {685#true} ~cond := #in~cond; {714#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} is VALID [2022-04-28 10:49:32,948 INFO L290 TraceCheckUtils]: 16: Hoare triple {714#(= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)} assume !(0 == ~cond); {718#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:49:32,949 INFO L290 TraceCheckUtils]: 17: Hoare triple {718#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {718#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:49:32,949 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {718#(not (= |__VERIFIER_assert_#in~cond| 0))} {729#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} #49#return; {729#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} is VALID [2022-04-28 10:49:34,952 WARN L290 TraceCheckUtils]: 19: Hoare triple {729#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (not (= main_~z~0 0)) (= (+ main_~a~0 (* (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) main_~z~0)) (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* main_~az~0 (div main_~y~0 main_~z~0))))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~a~0 main_~x~0)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {751#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0))))} is UNKNOWN [2022-04-28 10:49:34,954 INFO L290 TraceCheckUtils]: 20: Hoare triple {751#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0))))} assume !false; {751#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0))))} is VALID [2022-04-28 10:49:34,986 INFO L272 TraceCheckUtils]: 21: Hoare triple {751#(or (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0)) (= (mod (div main_~y~0 main_~z~0) main_~z~0) 0) (= (mod (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0) 0) (= (+ (* (div (div main_~y~0 main_~z~0) main_~z~0) main_~az~0) (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)) (+ main_~a~0 (* main_~z~0 (div (+ (div (+ (* (- 1) main_~a~0) main_~x~0) main_~z~0) (* (- 1) main_~a~0)) main_~z~0)))) (not (= main_~z~0 0))) (and (= main_~z~0 0) (= main_~y~0 0) (= main_~x~0 (+ (* main_~a~0 main_~z~0) main_~a~0))))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {758#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 10:49:34,987 INFO L290 TraceCheckUtils]: 22: Hoare triple {758#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {762#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 10:49:34,987 INFO L290 TraceCheckUtils]: 23: Hoare triple {762#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {686#false} is VALID [2022-04-28 10:49:34,987 INFO L290 TraceCheckUtils]: 24: Hoare triple {686#false} assume !false; {686#false} is VALID [2022-04-28 10:49:34,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 10:49:34,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 10:50:06,407 INFO L290 TraceCheckUtils]: 24: Hoare triple {686#false} assume !false; {686#false} is VALID [2022-04-28 10:50:06,408 INFO L290 TraceCheckUtils]: 23: Hoare triple {762#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {686#false} is VALID [2022-04-28 10:50:06,408 INFO L290 TraceCheckUtils]: 22: Hoare triple {758#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {762#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 10:50:06,409 INFO L272 TraceCheckUtils]: 21: Hoare triple {725#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {758#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 10:50:06,410 INFO L290 TraceCheckUtils]: 20: Hoare triple {725#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} assume !false; {725#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 10:50:06,450 INFO L290 TraceCheckUtils]: 19: Hoare triple {784#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {725#(= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0))} is VALID [2022-04-28 10:50:06,454 INFO L284 TraceCheckUtils]: 18: Hoare quadruple {718#(not (= |__VERIFIER_assert_#in~cond| 0))} {685#true} #49#return; {784#(= (+ (* main_~z~0 main_~x~0) main_~a~0 (* main_~az~0 (* main_~z~0 main_~y~0))) (+ main_~a~0 (* main_~z~0 (+ (* main_~z~0 main_~x~0) main_~a~0))))} is VALID [2022-04-28 10:50:06,454 INFO L290 TraceCheckUtils]: 17: Hoare triple {718#(not (= |__VERIFIER_assert_#in~cond| 0))} assume true; {718#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:50:06,455 INFO L290 TraceCheckUtils]: 16: Hoare triple {797#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} assume !(0 == ~cond); {718#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 10:50:06,455 INFO L290 TraceCheckUtils]: 15: Hoare triple {685#true} ~cond := #in~cond; {797#(or (not (= |__VERIFIER_assert_#in~cond| 0)) (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 10:50:06,455 INFO L272 TraceCheckUtils]: 14: Hoare triple {685#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {685#true} is VALID [2022-04-28 10:50:06,455 INFO L290 TraceCheckUtils]: 13: Hoare triple {685#true} assume !false; {685#true} is VALID [2022-04-28 10:50:06,455 INFO L290 TraceCheckUtils]: 12: Hoare triple {685#true} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~x~0 := ~x~0 * ~z~0 + ~a~0;~y~0 := ~y~0 * ~z~0; {685#true} is VALID [2022-04-28 10:50:06,456 INFO L284 TraceCheckUtils]: 11: Hoare quadruple {685#true} {685#true} #49#return; {685#true} is VALID [2022-04-28 10:50:06,456 INFO L290 TraceCheckUtils]: 10: Hoare triple {685#true} assume true; {685#true} is VALID [2022-04-28 10:50:06,456 INFO L290 TraceCheckUtils]: 9: Hoare triple {685#true} assume !(0 == ~cond); {685#true} is VALID [2022-04-28 10:50:06,456 INFO L290 TraceCheckUtils]: 8: Hoare triple {685#true} ~cond := #in~cond; {685#true} is VALID [2022-04-28 10:50:06,456 INFO L272 TraceCheckUtils]: 7: Hoare triple {685#true} call __VERIFIER_assert((if 0 == ~z~0 * ~x~0 - ~x~0 + ~a~0 - ~az~0 * ~y~0 then 1 else 0)); {685#true} is VALID [2022-04-28 10:50:06,456 INFO L290 TraceCheckUtils]: 6: Hoare triple {685#true} assume !false; {685#true} is VALID [2022-04-28 10:50:06,456 INFO L290 TraceCheckUtils]: 5: Hoare triple {685#true} havoc ~z~0;havoc ~a~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;havoc ~az~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~z~0 := #t~nondet4;havoc #t~nondet4;assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647;~a~0 := #t~nondet5;havoc #t~nondet5;assume -2147483648 <= #t~nondet6 && #t~nondet6 <= 2147483647;~k~0 := #t~nondet6;havoc #t~nondet6;~x~0 := ~a~0;~y~0 := 1;~c~0 := 1;~az~0 := ~a~0 * ~z~0; {685#true} is VALID [2022-04-28 10:50:06,456 INFO L272 TraceCheckUtils]: 4: Hoare triple {685#true} call #t~ret7 := main(); {685#true} is VALID [2022-04-28 10:50:06,457 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {685#true} {685#true} #53#return; {685#true} is VALID [2022-04-28 10:50:06,457 INFO L290 TraceCheckUtils]: 2: Hoare triple {685#true} assume true; {685#true} is VALID [2022-04-28 10:50:06,457 INFO L290 TraceCheckUtils]: 1: Hoare triple {685#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(10, 2);call #Ultimate.allocInit(12, 3); {685#true} is VALID [2022-04-28 10:50:06,457 INFO L272 TraceCheckUtils]: 0: Hoare triple {685#true} call ULTIMATE.init(); {685#true} is VALID [2022-04-28 10:50:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-28 10:50:06,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 10:50:06,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918836918] [2022-04-28 10:50:06,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 10:50:06,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980979436] [2022-04-28 10:50:06,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980979436] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 10:50:06,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 10:50:06,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2022-04-28 10:50:06,458 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 10:50:06,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1031141912] [2022-04-28 10:50:06,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1031141912] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 10:50:06,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 10:50:06,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-28 10:50:06,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755924177] [2022-04-28 10:50:06,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 10:50:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-04-28 10:50:06,459 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 10:50:06,459 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 10:50:10,515 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 20 inductive. 0 not inductive. 2 times theorem prover too weak to decide inductivity. [2022-04-28 10:50:10,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-28 10:50:10,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 10:50:10,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-28 10:50:10,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-04-28 10:50:10,517 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 10:50:12,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 10:50:14,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 10:50:16,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-28 10:50:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:50:17,803 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-04-28 10:50:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-28 10:50:17,804 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-04-28 10:50:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 10:50:17,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 10:50:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 25 transitions. [2022-04-28 10:50:17,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 10:50:17,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 25 transitions. [2022-04-28 10:50:17,807 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 25 transitions. [2022-04-28 10:50:24,018 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 22 inductive. 0 not inductive. 3 times theorem prover too weak to decide inductivity. [2022-04-28 10:50:24,018 INFO L225 Difference]: With dead ends: 30 [2022-04-28 10:50:24,018 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 10:50:24,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-28 10:50:24,021 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-04-28 10:50:24,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 69 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-04-28 10:50:24,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 10:50:24,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 10:50:24,024 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 10:50:24,024 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) [2022-04-28 10:50:24,024 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) [2022-04-28 10:50:24,025 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) [2022-04-28 10:50:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:50:24,025 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 10:50:24,025 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 10:50:24,025 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 10:50:24,025 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 10:50:24,025 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. [2022-04-28 10:50:24,025 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. [2022-04-28 10:50:24,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 10:50:24,025 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 10:50:24,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 10:50:24,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 10:50:24,026 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 10:50:24,026 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 10:50:24,026 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 10:50:24,026 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) [2022-04-28 10:50:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 10:50:24,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2022-04-28 10:50:24,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 10:50:24,026 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 10:50:24,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 10:50:24,026 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 10:50:24,027 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 10:50:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 10:50:24,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 10:50:24,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 10:50:24,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-28 10:50:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 10:50:24,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 10:50:26,825 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-28 10:50:26,825 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-28 10:50:26,825 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-28 10:50:26,825 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 11 13) no Hoare annotation was computed. [2022-04-28 10:50:26,825 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-04-28 10:50:26,825 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2022-04-28 10:50:26,825 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2022-04-28 10:50:26,825 INFO L895 garLoopResultBuilder]: At program point L34-1(lines 33 42) the Hoare annotation is: (let ((.cse8 (* main_~a~0 main_~z~0))) (let ((.cse0 (= .cse8 main_~az~0)) (.cse5 (= main_~z~0 0)) (.cse7 (= main_~x~0 (+ .cse8 main_~a~0)))) (or (and (= main_~y~0 1) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) .cse0) (let ((.cse6 (* (- 1) main_~a~0))) (let ((.cse1 (+ .cse6 main_~x~0))) (let ((.cse2 (div main_~y~0 main_~z~0)) (.cse3 (+ (div .cse1 main_~z~0) .cse6))) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod .cse1 main_~z~0)) (= (mod .cse2 main_~z~0) 0) (= (mod .cse3 main_~z~0) 0) (let ((.cse4 (div .cse3 main_~z~0))) (= (+ (* (div .cse2 main_~z~0) main_~az~0) .cse4) (+ main_~a~0 (* main_~z~0 .cse4)))) (not .cse5))))) (and (= main_~z~0 main_~y~0) .cse7 .cse0) (and .cse5 (= main_~y~0 0) .cse7)))) [2022-04-28 10:50:26,826 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 42) the Hoare annotation is: (let ((.cse8 (* main_~a~0 main_~z~0))) (let ((.cse0 (= .cse8 main_~az~0)) (.cse5 (= main_~z~0 0)) (.cse7 (= main_~x~0 (+ .cse8 main_~a~0)))) (or (and (= main_~y~0 1) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) .cse0) (let ((.cse6 (* (- 1) main_~a~0))) (let ((.cse1 (+ .cse6 main_~x~0))) (let ((.cse2 (div main_~y~0 main_~z~0)) (.cse3 (+ (div .cse1 main_~z~0) .cse6))) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod .cse1 main_~z~0)) (= (mod .cse2 main_~z~0) 0) (= (mod .cse3 main_~z~0) 0) (let ((.cse4 (div .cse3 main_~z~0))) (= (+ (* (div .cse2 main_~z~0) main_~az~0) .cse4) (+ main_~a~0 (* main_~z~0 .cse4)))) (not .cse5))))) (and (= main_~z~0 main_~y~0) .cse7 .cse0) (and .cse5 (= main_~y~0 0) .cse7)))) [2022-04-28 10:50:26,826 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 42) the Hoare annotation is: (let ((.cse8 (* main_~a~0 main_~z~0))) (let ((.cse0 (= .cse8 main_~az~0)) (.cse5 (= main_~z~0 0)) (.cse7 (= main_~x~0 (+ .cse8 main_~a~0)))) (or (and (= main_~y~0 1) (= main_~a~0 main_~x~0) .cse0) (let ((.cse6 (* (- 1) main_~a~0))) (let ((.cse1 (+ .cse6 main_~x~0))) (let ((.cse2 (div main_~y~0 main_~z~0)) (.cse3 (+ (div .cse1 main_~z~0) .cse6))) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod .cse1 main_~z~0)) (= (mod .cse2 main_~z~0) 0) (= (mod .cse3 main_~z~0) 0) (let ((.cse4 (div .cse3 main_~z~0))) (= (+ (* (div .cse2 main_~z~0) main_~az~0) .cse4) (+ main_~a~0 (* main_~z~0 .cse4)))) (not .cse5))))) (and (= main_~z~0 main_~y~0) .cse7 .cse0) (and .cse5 (= main_~y~0 0) .cse7)))) [2022-04-28 10:50:26,826 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 21 45) the Hoare annotation is: true [2022-04-28 10:50:26,826 INFO L902 garLoopResultBuilder]: At program point mainEXIT(lines 21 45) the Hoare annotation is: true [2022-04-28 10:50:26,826 INFO L902 garLoopResultBuilder]: At program point mainFINAL(lines 21 45) the Hoare annotation is: true [2022-04-28 10:50:26,828 INFO L902 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: true [2022-04-28 10:50:26,828 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse8 (* main_~a~0 main_~z~0))) (let ((.cse0 (= .cse8 main_~az~0)) (.cse5 (= main_~z~0 0)) (.cse7 (= main_~x~0 (+ .cse8 main_~a~0)))) (or (and (= main_~y~0 1) (= (+ (* main_~y~0 main_~az~0) main_~x~0) (+ (* main_~z~0 main_~x~0) main_~a~0)) .cse0) (let ((.cse6 (* (- 1) main_~a~0))) (let ((.cse1 (+ .cse6 main_~x~0))) (let ((.cse2 (div main_~y~0 main_~z~0)) (.cse3 (+ (div .cse1 main_~z~0) .cse6))) (and (= (mod main_~y~0 main_~z~0) 0) (= 0 (mod .cse1 main_~z~0)) (= (mod .cse2 main_~z~0) 0) (= (mod .cse3 main_~z~0) 0) (let ((.cse4 (div .cse3 main_~z~0))) (= (+ (* (div .cse2 main_~z~0) main_~az~0) .cse4) (+ main_~a~0 (* main_~z~0 .cse4)))) (not .cse5))))) (and (= main_~z~0 main_~y~0) .cse7 .cse0) (and .cse5 (= main_~y~0 0) .cse7)))) [2022-04-28 10:50:26,828 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-28 10:50:26,828 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2022-04-28 10:50:26,828 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-28 10:50:26,828 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 10:50:26,828 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-28 10:50:26,828 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 10:50:26,829 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 10:50:26,829 INFO L895 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 10:50:26,829 INFO L895 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 10:50:26,829 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-28 10:50:26,829 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 10:50:26,829 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-04-28 10:50:26,829 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-28 10:50:26,832 INFO L356 BasicCegarLoop]: Path program histogram: [4, 2, 2] [2022-04-28 10:50:26,833 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 10:50:26,835 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 10:50:26,836 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-28 10:50:26,837 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 10:50:26,837 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-28 10:50:26,837 WARN L170 areAnnotationChecker]: L12 has no Hoare annotation [2022-04-28 10:50:26,848 WARN L170 areAnnotationChecker]: L12-2 has no Hoare annotation [2022-04-28 10:50:28,873 INFO L163 areAnnotationChecker]: CFG has 25 edges. 24 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 10:50:28,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 10:50:28 BoogieIcfgContainer [2022-04-28 10:50:28,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 10:50:28,887 INFO L158 Benchmark]: Toolchain (without parser) took 167148.11ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 152.6MB in the beginning and 214.6MB in the end (delta: -62.0MB). Peak memory consumption was 112.9MB. Max. memory is 8.0GB. [2022-04-28 10:50:28,887 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 202.4MB. Free memory was 168.8MB in the beginning and 168.6MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 10:50:28,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.75ms. Allocated memory is still 202.4MB. Free memory was 152.4MB in the beginning and 178.2MB in the end (delta: -25.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 10:50:28,888 INFO L158 Benchmark]: Boogie Preprocessor took 22.48ms. Allocated memory is still 202.4MB. Free memory was 178.2MB in the beginning and 176.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 10:50:28,888 INFO L158 Benchmark]: RCFGBuilder took 263.10ms. Allocated memory is still 202.4MB. Free memory was 176.6MB in the beginning and 165.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 10:50:28,888 INFO L158 Benchmark]: TraceAbstraction took 166672.72ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 165.1MB in the beginning and 214.6MB in the end (delta: -49.5MB). Peak memory consumption was 125.6MB. Max. memory is 8.0GB. [2022-04-28 10:50:28,889 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 0.17ms. Allocated memory is still 202.4MB. Free memory was 168.8MB in the beginning and 168.6MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 185.75ms. Allocated memory is still 202.4MB. Free memory was 152.4MB in the beginning and 178.2MB in the end (delta: -25.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.48ms. Allocated memory is still 202.4MB. Free memory was 178.2MB in the beginning and 176.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 263.10ms. Allocated memory is still 202.4MB. Free memory was 176.6MB in the beginning and 165.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 166672.72ms. Allocated memory was 202.4MB in the beginning and 243.3MB in the end (delta: 40.9MB). Free memory was 165.1MB in the beginning and 214.6MB in the end (delta: -49.5MB). Peak memory consumption was 125.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 164.6s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 213 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 148 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 141 IncrementalHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 65 mSDtfsCounter, 141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 63 PreInvPairs, 100 NumberOfFragments, 560 HoareAnnotationTreeSize, 63 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 278 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((y == 1 && y * az + x == z * x + a) && a * z == az) || (((((y % z == 0 && 0 == (-1 * a + x) % z) && y / z % z == 0) && ((-1 * a + x) / z + -1 * a) % z == 0) && y / z / z * az + ((-1 * a + x) / z + -1 * a) / z == a + z * (((-1 * a + x) / z + -1 * a) / z)) && !(z == 0))) || ((z == y && x == a * z + a) && a * z == az)) || ((z == 0 && y == 0) && x == a * z + a) - ProcedureContractResult [Line: 21]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-04-28 10:50:28,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...