/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-scaling/ps2-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-15 16:40:40,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-15 16:40:40,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-15 16:40:40,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-15 16:40:40,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-15 16:40:40,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-15 16:40:40,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-15 16:40:40,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-15 16:40:40,983 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-15 16:40:40,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-15 16:40:40,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-15 16:40:40,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-15 16:40:40,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-15 16:40:40,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-15 16:40:40,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-15 16:40:40,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-15 16:40:40,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-15 16:40:40,986 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-15 16:40:40,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-15 16:40:40,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-15 16:40:40,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-15 16:40:40,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-15 16:40:40,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-15 16:40:40,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 16:40:40,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-15 16:40:40,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-15 16:40:40,987 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-15 16:40:40,987 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-15 16:40:40,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-15 16:40:40,987 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-15 16:40:40,987 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-15 16:40:41,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-15 16:40:41,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-15 16:40:41,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-15 16:40:41,225 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-15 16:40:41,225 INFO L275 PluginConnector]: CDTParser initialized [2022-04-15 16:40:41,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_valuebound50.c [2022-04-15 16:40:41,279 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/309cf8d30/99ba8e0165fe492d8ab51937cf93483e/FLAG7fb83d971 [2022-04-15 16:40:41,625 INFO L306 CDTParser]: Found 1 translation units. [2022-04-15 16:40:41,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_valuebound50.c [2022-04-15 16:40:41,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/309cf8d30/99ba8e0165fe492d8ab51937cf93483e/FLAG7fb83d971 [2022-04-15 16:40:41,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/309cf8d30/99ba8e0165fe492d8ab51937cf93483e [2022-04-15 16:40:41,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-15 16:40:41,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-15 16:40:41,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-15 16:40:41,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-15 16:40:41,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-15 16:40:41,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c6c70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41, skipping insertion in model container [2022-04-15 16:40:41,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-15 16:40:41,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-15 16:40:41,788 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_valuebound50.c[454,467] [2022-04-15 16:40:41,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 16:40:41,827 INFO L203 MainTranslator]: Completed pre-run [2022-04-15 16:40:41,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_valuebound50.c[454,467] [2022-04-15 16:40:41,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-15 16:40:41,849 INFO L208 MainTranslator]: Completed translation [2022-04-15 16:40:41,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41 WrapperNode [2022-04-15 16:40:41,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-15 16:40:41,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-15 16:40:41,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-15 16:40:41,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-15 16:40:41,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-15 16:40:41,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-15 16:40:41,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-15 16:40:41,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-15 16:40:41,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41" (1/1) ... [2022-04-15 16:40:41,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-15 16:40:41,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 16:40:41,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-15 16:40:41,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-15 16:40:41,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-15 16:40:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-15 16:40:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-15 16:40:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-15 16:40:41,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-15 16:40:41,936 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-15 16:40:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-15 16:40:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-15 16:40:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-15 16:40:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-15 16:40:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-15 16:40:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-15 16:40:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-15 16:40:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-15 16:40:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-15 16:40:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-15 16:40:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-15 16:40:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-15 16:40:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-15 16:40:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-15 16:40:41,987 INFO L234 CfgBuilder]: Building ICFG [2022-04-15 16:40:41,988 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-15 16:40:42,084 INFO L275 CfgBuilder]: Performing block encoding [2022-04-15 16:40:42,089 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-15 16:40:42,090 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-15 16:40:42,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 04:40:42 BoogieIcfgContainer [2022-04-15 16:40:42,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-15 16:40:42,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-15 16:40:42,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-15 16:40:42,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-15 16:40:42,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 04:40:41" (1/3) ... [2022-04-15 16:40:42,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4b736a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 04:40:42, skipping insertion in model container [2022-04-15 16:40:42,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 04:40:41" (2/3) ... [2022-04-15 16:40:42,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d4b736a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 04:40:42, skipping insertion in model container [2022-04-15 16:40:42,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 04:40:42" (3/3) ... [2022-04-15 16:40:42,098 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_valuebound50.c [2022-04-15 16:40:42,101 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-15 16:40:42,101 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-15 16:40:42,134 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-15 16:40:42,138 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-15 16:40:42,139 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-15 16:40:42,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-15 16:40:42,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-15 16:40:42,158 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 16:40:42,158 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 16:40:42,159 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 16:40:42,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 16:40:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1914087080, now seen corresponding path program 1 times [2022-04-15 16:40:42,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 16:40:42,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1793797049] [2022-04-15 16:40:42,191 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 16:40:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1914087080, now seen corresponding path program 2 times [2022-04-15 16:40:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 16:40:42,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57347246] [2022-04-15 16:40:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 16:40:42,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 16:40:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:40:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-15 16:40:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:40:42,418 INFO L290 TraceCheckUtils]: 0: Hoare triple {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {30#true} is VALID [2022-04-15 16:40:42,418 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#true} assume true; {30#true} is VALID [2022-04-15 16:40:42,418 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {30#true} {30#true} #57#return; {30#true} is VALID [2022-04-15 16:40:42,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-15 16:40:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:40:42,427 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#true} ~cond := #in~cond; {30#true} is VALID [2022-04-15 16:40:42,427 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#true} assume 0 == ~cond;assume false; {31#false} is VALID [2022-04-15 16:40:42,428 INFO L290 TraceCheckUtils]: 2: Hoare triple {31#false} assume true; {31#false} is VALID [2022-04-15 16:40:42,428 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {31#false} {30#true} #51#return; {31#false} is VALID [2022-04-15 16:40:42,429 INFO L272 TraceCheckUtils]: 0: Hoare triple {30#true} call ULTIMATE.init(); {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-15 16:40:42,429 INFO L290 TraceCheckUtils]: 1: Hoare triple {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {30#true} is VALID [2022-04-15 16:40:42,430 INFO L290 TraceCheckUtils]: 2: Hoare triple {30#true} assume true; {30#true} is VALID [2022-04-15 16:40:42,430 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {30#true} {30#true} #57#return; {30#true} is VALID [2022-04-15 16:40:42,430 INFO L272 TraceCheckUtils]: 4: Hoare triple {30#true} call #t~ret5 := main(); {30#true} is VALID [2022-04-15 16:40:42,430 INFO L290 TraceCheckUtils]: 5: Hoare triple {30#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~k~0 := #t~nondet4;havoc #t~nondet4; {30#true} is VALID [2022-04-15 16:40:42,431 INFO L272 TraceCheckUtils]: 6: Hoare triple {30#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 50 then 1 else 0)); {30#true} is VALID [2022-04-15 16:40:42,431 INFO L290 TraceCheckUtils]: 7: Hoare triple {30#true} ~cond := #in~cond; {30#true} is VALID [2022-04-15 16:40:42,432 INFO L290 TraceCheckUtils]: 8: Hoare triple {30#true} assume 0 == ~cond;assume false; {31#false} is VALID [2022-04-15 16:40:42,432 INFO L290 TraceCheckUtils]: 9: Hoare triple {31#false} assume true; {31#false} is VALID [2022-04-15 16:40:42,432 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {31#false} {30#true} #51#return; {31#false} is VALID [2022-04-15 16:40:42,432 INFO L290 TraceCheckUtils]: 11: Hoare triple {31#false} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {31#false} is VALID [2022-04-15 16:40:42,433 INFO L290 TraceCheckUtils]: 12: Hoare triple {31#false} assume false; {31#false} is VALID [2022-04-15 16:40:42,433 INFO L272 TraceCheckUtils]: 13: Hoare triple {31#false} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {31#false} is VALID [2022-04-15 16:40:42,433 INFO L290 TraceCheckUtils]: 14: Hoare triple {31#false} ~cond := #in~cond; {31#false} is VALID [2022-04-15 16:40:42,433 INFO L290 TraceCheckUtils]: 15: Hoare triple {31#false} assume 0 == ~cond; {31#false} is VALID [2022-04-15 16:40:42,434 INFO L290 TraceCheckUtils]: 16: Hoare triple {31#false} assume !false; {31#false} is VALID [2022-04-15 16:40:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 16:40:42,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 16:40:42,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57347246] [2022-04-15 16:40:42,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57347246] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:40:42,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:40:42,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 16:40:42,438 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 16:40:42,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1793797049] [2022-04-15 16:40:42,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1793797049] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:40:42,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:40:42,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-15 16:40:42,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157322431] [2022-04-15 16:40:42,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 16:40:42,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 16:40:42,446 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 16:40:42,449 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:42,488 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:40:42,489 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-15 16:40:42,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 16:40:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-15 16:40:42,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 16:40:42,515 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:42,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:40:42,641 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-04-15 16:40:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-15 16:40:42,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 16:40:42,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 16:40:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2022-04-15 16:40:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2022-04-15 16:40:42,664 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 56 transitions. [2022-04-15 16:40:42,739 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 56 edges. 56 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:40:42,754 INFO L225 Difference]: With dead ends: 45 [2022-04-15 16:40:42,754 INFO L226 Difference]: Without dead ends: 22 [2022-04-15 16:40:42,758 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-15 16:40:42,762 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 16:40:42,764 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 16:40:42,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-04-15 16:40:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-04-15 16:40:42,791 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 16:40:42,792 INFO L82 GeneralOperation]: Start isEquivalent. First operand 22 states. Second operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:40:42,792 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:40:42,793 INFO L87 Difference]: Start difference. First operand 22 states. Second operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:40:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:40:42,796 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-04-15 16:40:42,796 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-04-15 16:40:42,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:40:42,797 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:40:42,797 INFO L74 IsIncluded]: Start isIncluded. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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 22 states. [2022-04-15 16:40:42,797 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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 22 states. [2022-04-15 16:40:42,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:40:42,800 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-04-15 16:40:42,800 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-04-15 16:40:42,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:40:42,800 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:40:42,800 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 16:40:42,800 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 16:40:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-15 16:40:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-04-15 16:40:42,803 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-04-15 16:40:42,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 16:40:42,804 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-04-15 16:40:42,804 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:42,804 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 22 states and 23 transitions. [2022-04-15 16:40:42,833 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:40:42,834 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-04-15 16:40:42,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-15 16:40:42,834 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 16:40:42,835 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 16:40:42,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-15 16:40:42,835 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 16:40:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 16:40:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1699034386, now seen corresponding path program 1 times [2022-04-15 16:40:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 16:40:42,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1947152437] [2022-04-15 16:40:42,843 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-15 16:40:42,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1699034386, now seen corresponding path program 2 times [2022-04-15 16:40:42,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 16:40:42,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202273679] [2022-04-15 16:40:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 16:40:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 16:40:42,872 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 16:40:42,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341220734] [2022-04-15 16:40:42,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 16:40:42,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:40:42,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 16:40:42,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 16:40:42,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-15 16:40:42,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-15 16:40:42,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 16:40:42,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-15 16:40:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:40:42,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 16:40:43,039 INFO L272 TraceCheckUtils]: 0: Hoare triple {220#true} call ULTIMATE.init(); {220#true} is VALID [2022-04-15 16:40:43,040 INFO L290 TraceCheckUtils]: 1: Hoare triple {220#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {220#true} is VALID [2022-04-15 16:40:43,040 INFO L290 TraceCheckUtils]: 2: Hoare triple {220#true} assume true; {220#true} is VALID [2022-04-15 16:40:43,040 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {220#true} {220#true} #57#return; {220#true} is VALID [2022-04-15 16:40:43,040 INFO L272 TraceCheckUtils]: 4: Hoare triple {220#true} call #t~ret5 := main(); {220#true} is VALID [2022-04-15 16:40:43,040 INFO L290 TraceCheckUtils]: 5: Hoare triple {220#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~k~0 := #t~nondet4;havoc #t~nondet4; {220#true} is VALID [2022-04-15 16:40:43,041 INFO L272 TraceCheckUtils]: 6: Hoare triple {220#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 50 then 1 else 0)); {220#true} is VALID [2022-04-15 16:40:43,041 INFO L290 TraceCheckUtils]: 7: Hoare triple {220#true} ~cond := #in~cond; {220#true} is VALID [2022-04-15 16:40:43,041 INFO L290 TraceCheckUtils]: 8: Hoare triple {220#true} assume !(0 == ~cond); {220#true} is VALID [2022-04-15 16:40:43,041 INFO L290 TraceCheckUtils]: 9: Hoare triple {220#true} assume true; {220#true} is VALID [2022-04-15 16:40:43,041 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {220#true} {220#true} #51#return; {220#true} is VALID [2022-04-15 16:40:43,042 INFO L290 TraceCheckUtils]: 11: Hoare triple {220#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {258#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 16:40:43,043 INFO L290 TraceCheckUtils]: 12: Hoare triple {258#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {258#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 16:40:43,043 INFO L272 TraceCheckUtils]: 13: Hoare triple {258#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {265#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 16:40:43,044 INFO L290 TraceCheckUtils]: 14: Hoare triple {265#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {269#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 16:40:43,044 INFO L290 TraceCheckUtils]: 15: Hoare triple {269#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {221#false} is VALID [2022-04-15 16:40:43,045 INFO L290 TraceCheckUtils]: 16: Hoare triple {221#false} assume !false; {221#false} is VALID [2022-04-15 16:40:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 16:40:43,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-15 16:40:43,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 16:40:43,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202273679] [2022-04-15 16:40:43,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 16:40:43,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341220734] [2022-04-15 16:40:43,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341220734] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:40:43,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:40:43,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 16:40:43,047 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 16:40:43,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1947152437] [2022-04-15 16:40:43,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1947152437] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:40:43,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:40:43,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 16:40:43,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796388639] [2022-04-15 16:40:43,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 16:40:43,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 16:40:43,049 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 16:40:43,049 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:43,063 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:40:43,063 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 16:40:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 16:40:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 16:40:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-15 16:40:43,064 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:43,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:40:43,166 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2022-04-15 16:40:43,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 16:40:43,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-04-15 16:40:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 16:40:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2022-04-15 16:40:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2022-04-15 16:40:43,188 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 34 transitions. [2022-04-15 16:40:43,216 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:40:43,219 INFO L225 Difference]: With dead ends: 32 [2022-04-15 16:40:43,219 INFO L226 Difference]: Without dead ends: 29 [2022-04-15 16:40:43,220 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-15 16:40:43,222 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 16:40:43,225 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 72 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 16:40:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-15 16:40:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-04-15 16:40:43,239 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 16:40:43,239 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:40:43,240 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:40:43,240 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:40:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:40:43,243 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-04-15 16:40:43,244 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-04-15 16:40:43,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:40:43,244 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:40:43,245 INFO L74 IsIncluded]: Start isIncluded. First operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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 29 states. [2022-04-15 16:40:43,245 INFO L87 Difference]: Start difference. First operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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 29 states. [2022-04-15 16:40:43,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:40:43,252 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-04-15 16:40:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-04-15 16:40:43,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:40:43,253 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:40:43,253 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 16:40:43,253 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 16:40:43,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-15 16:40:43,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-04-15 16:40:43,258 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 17 [2022-04-15 16:40:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 16:40:43,259 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-04-15 16:40:43,259 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-04-15 16:40:43,259 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 29 states and 30 transitions. [2022-04-15 16:40:43,290 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:40:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-04-15 16:40:43,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-15 16:40:43,293 INFO L491 BasicCegarLoop]: Found error trace [2022-04-15 16:40:43,294 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-15 16:40:43,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-15 16:40:43,511 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:40:43,512 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-15 16:40:43,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-15 16:40:43,512 INFO L85 PathProgramCache]: Analyzing trace with hash 276758134, now seen corresponding path program 1 times [2022-04-15 16:40:43,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-15 16:40:43,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1846556386] [2022-04-15 16:41:45,333 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-04-15 16:41:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash 22480176, now seen corresponding path program 1 times [2022-04-15 16:41:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 16:41:45,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178585196] [2022-04-15 16:41:45,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 16:41:45,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 16:41:45,347 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 16:41:45,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870042922] [2022-04-15 16:41:45,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 16:41:45,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:41:45,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 16:41:45,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 16:41:45,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-15 16:41:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-15 16:41:45,399 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-15 16:41:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-15 16:41:45,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-15 16:41:45,424 INFO L85 PathProgramCache]: Analyzing trace with hash 276758134, now seen corresponding path program 2 times [2022-04-15 16:41:45,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-15 16:41:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761767115] [2022-04-15 16:41:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-15 16:41:45,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-15 16:41:45,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-15 16:41:45,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788200300] [2022-04-15 16:41:45,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-15 16:41:45,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:41:45,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-15 16:41:45,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-15 16:41:45,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-15 16:41:45,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-15 16:41:45,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-15 16:41:45,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-15 16:41:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-15 16:41:45,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-15 16:41:45,633 INFO L272 TraceCheckUtils]: 0: Hoare triple {457#true} call ULTIMATE.init(); {457#true} is VALID [2022-04-15 16:41:45,634 INFO L290 TraceCheckUtils]: 1: Hoare triple {457#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {457#true} is VALID [2022-04-15 16:41:45,634 INFO L290 TraceCheckUtils]: 2: Hoare triple {457#true} assume true; {457#true} is VALID [2022-04-15 16:41:45,634 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {457#true} {457#true} #57#return; {457#true} is VALID [2022-04-15 16:41:45,634 INFO L272 TraceCheckUtils]: 4: Hoare triple {457#true} call #t~ret5 := main(); {457#true} is VALID [2022-04-15 16:41:45,634 INFO L290 TraceCheckUtils]: 5: Hoare triple {457#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~k~0 := #t~nondet4;havoc #t~nondet4; {457#true} is VALID [2022-04-15 16:41:45,634 INFO L272 TraceCheckUtils]: 6: Hoare triple {457#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 50 then 1 else 0)); {457#true} is VALID [2022-04-15 16:41:45,635 INFO L290 TraceCheckUtils]: 7: Hoare triple {457#true} ~cond := #in~cond; {457#true} is VALID [2022-04-15 16:41:45,635 INFO L290 TraceCheckUtils]: 8: Hoare triple {457#true} assume !(0 == ~cond); {457#true} is VALID [2022-04-15 16:41:45,635 INFO L290 TraceCheckUtils]: 9: Hoare triple {457#true} assume true; {457#true} is VALID [2022-04-15 16:41:45,635 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {457#true} {457#true} #51#return; {457#true} is VALID [2022-04-15 16:41:45,639 INFO L290 TraceCheckUtils]: 11: Hoare triple {457#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {495#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 16:41:45,640 INFO L290 TraceCheckUtils]: 12: Hoare triple {495#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {495#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 16:41:45,640 INFO L272 TraceCheckUtils]: 13: Hoare triple {495#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {457#true} is VALID [2022-04-15 16:41:45,642 INFO L290 TraceCheckUtils]: 14: Hoare triple {457#true} ~cond := #in~cond; {457#true} is VALID [2022-04-15 16:41:45,642 INFO L290 TraceCheckUtils]: 15: Hoare triple {457#true} assume !(0 == ~cond); {457#true} is VALID [2022-04-15 16:41:45,642 INFO L290 TraceCheckUtils]: 16: Hoare triple {457#true} assume true; {457#true} is VALID [2022-04-15 16:41:45,643 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {457#true} {495#(and (= main_~x~0 0) (= main_~y~0 0))} #53#return; {495#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-15 16:41:45,643 INFO L290 TraceCheckUtils]: 18: Hoare triple {495#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 + ~x~0; {517#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} is VALID [2022-04-15 16:41:45,644 INFO L290 TraceCheckUtils]: 19: Hoare triple {517#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} assume !false; {517#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} is VALID [2022-04-15 16:41:45,645 INFO L272 TraceCheckUtils]: 20: Hoare triple {517#(and (= (+ (- 1) main_~y~0) 0) (= (+ main_~x~0 (* (- 1) main_~y~0)) 0))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {524#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 16:41:45,645 INFO L290 TraceCheckUtils]: 21: Hoare triple {524#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {528#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 16:41:45,645 INFO L290 TraceCheckUtils]: 22: Hoare triple {528#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {458#false} is VALID [2022-04-15 16:41:45,646 INFO L290 TraceCheckUtils]: 23: Hoare triple {458#false} assume !false; {458#false} is VALID [2022-04-15 16:41:45,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-15 16:41:45,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-15 16:41:45,802 INFO L290 TraceCheckUtils]: 23: Hoare triple {458#false} assume !false; {458#false} is VALID [2022-04-15 16:41:45,803 INFO L290 TraceCheckUtils]: 22: Hoare triple {528#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {458#false} is VALID [2022-04-15 16:41:45,804 INFO L290 TraceCheckUtils]: 21: Hoare triple {524#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {528#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-15 16:41:45,805 INFO L272 TraceCheckUtils]: 20: Hoare triple {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {524#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-15 16:41:45,805 INFO L290 TraceCheckUtils]: 19: Hoare triple {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} assume !false; {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-15 16:41:45,807 INFO L290 TraceCheckUtils]: 18: Hoare triple {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 + ~x~0; {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-15 16:41:45,808 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {457#true} {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} #53#return; {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-15 16:41:45,808 INFO L290 TraceCheckUtils]: 16: Hoare triple {457#true} assume true; {457#true} is VALID [2022-04-15 16:41:45,809 INFO L290 TraceCheckUtils]: 15: Hoare triple {457#true} assume !(0 == ~cond); {457#true} is VALID [2022-04-15 16:41:45,809 INFO L290 TraceCheckUtils]: 14: Hoare triple {457#true} ~cond := #in~cond; {457#true} is VALID [2022-04-15 16:41:45,809 INFO L272 TraceCheckUtils]: 13: Hoare triple {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} call __VERIFIER_assert((if 0 == ~y~0 * ~y~0 - 2 * ~x~0 + ~y~0 then 1 else 0)); {457#true} is VALID [2022-04-15 16:41:45,809 INFO L290 TraceCheckUtils]: 12: Hoare triple {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} assume !false; {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-15 16:41:45,810 INFO L290 TraceCheckUtils]: 11: Hoare triple {457#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {544#(= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0)))} is VALID [2022-04-15 16:41:45,810 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {457#true} {457#true} #51#return; {457#true} is VALID [2022-04-15 16:41:45,810 INFO L290 TraceCheckUtils]: 9: Hoare triple {457#true} assume true; {457#true} is VALID [2022-04-15 16:41:45,810 INFO L290 TraceCheckUtils]: 8: Hoare triple {457#true} assume !(0 == ~cond); {457#true} is VALID [2022-04-15 16:41:45,811 INFO L290 TraceCheckUtils]: 7: Hoare triple {457#true} ~cond := #in~cond; {457#true} is VALID [2022-04-15 16:41:45,811 INFO L272 TraceCheckUtils]: 6: Hoare triple {457#true} call assume_abort_if_not((if ~k~0 >= 0 && ~k~0 <= 50 then 1 else 0)); {457#true} is VALID [2022-04-15 16:41:45,811 INFO L290 TraceCheckUtils]: 5: Hoare triple {457#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~k~0 := #t~nondet4;havoc #t~nondet4; {457#true} is VALID [2022-04-15 16:41:45,811 INFO L272 TraceCheckUtils]: 4: Hoare triple {457#true} call #t~ret5 := main(); {457#true} is VALID [2022-04-15 16:41:45,811 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {457#true} {457#true} #57#return; {457#true} is VALID [2022-04-15 16:41:45,812 INFO L290 TraceCheckUtils]: 2: Hoare triple {457#true} assume true; {457#true} is VALID [2022-04-15 16:41:45,812 INFO L290 TraceCheckUtils]: 1: Hoare triple {457#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {457#true} is VALID [2022-04-15 16:41:45,812 INFO L272 TraceCheckUtils]: 0: Hoare triple {457#true} call ULTIMATE.init(); {457#true} is VALID [2022-04-15 16:41:45,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-15 16:41:45,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-15 16:41:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761767115] [2022-04-15 16:41:45,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-15 16:41:45,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788200300] [2022-04-15 16:41:45,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788200300] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-15 16:41:45,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-15 16:41:45,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-15 16:41:45,814 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-15 16:41:45,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1846556386] [2022-04-15 16:41:45,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1846556386] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-15 16:41:45,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-15 16:41:45,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-15 16:41:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498424370] [2022-04-15 16:41:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-15 16:41:45,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-15 16:41:45,815 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-15 16:41:45,815 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:41:45,834 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:41:45,835 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-15 16:41:45,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-15 16:41:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-15 16:41:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-15 16:41:45,836 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:41:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:41:45,955 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-04-15 16:41:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-15 16:41:45,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-04-15 16:41:45,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-15 16:41:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:41:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2022-04-15 16:41:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:41:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2022-04-15 16:41:45,958 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 23 transitions. [2022-04-15 16:41:45,980 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:41:45,981 INFO L225 Difference]: With dead ends: 29 [2022-04-15 16:41:45,981 INFO L226 Difference]: Without dead ends: 0 [2022-04-15 16:41:45,981 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-15 16:41:45,982 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-15 16:41:45,982 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 56 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-15 16:41:45,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-15 16:41:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-15 16:41:45,983 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-15 16:41:45,983 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 16:41:45,983 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 16:41:45,983 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 16:41:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:41:45,984 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 16:41:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 16:41:45,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:41:45,984 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:41:45,984 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 16:41:45,984 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-15 16:41:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-15 16:41:45,984 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-15 16:41:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 16:41:45,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:41:45,985 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-15 16:41:45,985 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-15 16:41:45,985 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-15 16:41:45,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-15 16:41:45,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-15 16:41:45,985 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2022-04-15 16:41:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-15 16:41:45,985 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-15 16:41:45,986 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-15 16:41:45,986 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-15 16:41:45,986 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-15 16:41:45,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-15 16:41:45,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-15 16:41:45,988 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-15 16:41:46,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-15 16:41:46,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-15 16:41:46,403 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3,SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-15 16:41:46,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-15 16:41:46,506 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-04-15 16:41:46,507 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-04-15 16:41:46,507 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-04-15 16:41:46,507 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2022-04-15 16:41:46,507 INFO L885 garLoopResultBuilder]: At program point L7(line 7) the Hoare annotation is: true [2022-04-15 16:41:46,507 INFO L885 garLoopResultBuilder]: At program point L7-2(lines 6 8) the Hoare annotation is: true [2022-04-15 16:41:46,507 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 6 8) the Hoare annotation is: true [2022-04-15 16:41:46,507 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 17 40) the Hoare annotation is: true [2022-04-15 16:41:46,507 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2022-04-15 16:41:46,507 INFO L878 garLoopResultBuilder]: At program point L28-1(lines 27 36) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2022-04-15 16:41:46,508 INFO L878 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2022-04-15 16:41:46,508 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 17 40) the Hoare annotation is: true [2022-04-15 16:41:46,508 INFO L878 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (= (* main_~x~0 2) (+ main_~y~0 (* main_~y~0 main_~y~0))) [2022-04-15 16:41:46,508 INFO L885 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2022-04-15 16:41:46,508 INFO L885 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: true [2022-04-15 16:41:46,508 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 17 40) the Hoare annotation is: true [2022-04-15 16:41:46,508 INFO L885 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: true [2022-04-15 16:41:46,508 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-15 16:41:46,508 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-15 16:41:46,508 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-15 16:41:46,508 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-15 16:41:46,508 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-15 16:41:46,509 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-15 16:41:46,509 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-15 16:41:46,509 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-04-15 16:41:46,509 INFO L878 garLoopResultBuilder]: At program point L11(lines 11 12) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-15 16:41:46,509 INFO L878 garLoopResultBuilder]: At program point L10(lines 10 13) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-15 16:41:46,509 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 9 15) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-15 16:41:46,509 INFO L878 garLoopResultBuilder]: At program point L10-2(lines 9 15) the Hoare annotation is: (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) [2022-04-15 16:41:46,509 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-15 16:41:46,512 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1] [2022-04-15 16:41:46,513 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-15 16:41:46,515 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-15 16:41:46,517 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-15 16:41:46,527 INFO L163 areAnnotationChecker]: CFG has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-15 16:41:46,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 04:41:46 BoogieIcfgContainer [2022-04-15 16:41:46,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-15 16:41:46,535 INFO L158 Benchmark]: Toolchain (without parser) took 64893.51ms. Allocated memory was 173.0MB in the beginning and 218.1MB in the end (delta: 45.1MB). Free memory was 122.6MB in the beginning and 173.1MB in the end (delta: -50.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 16:41:46,535 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 173.0MB. Free memory was 138.9MB in the beginning and 138.9MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-15 16:41:46,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.00ms. Allocated memory was 173.0MB in the beginning and 218.1MB in the end (delta: 45.1MB). Free memory was 122.4MB in the beginning and 195.0MB in the end (delta: -72.6MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. [2022-04-15 16:41:46,536 INFO L158 Benchmark]: Boogie Preprocessor took 22.77ms. Allocated memory is still 218.1MB. Free memory was 195.0MB in the beginning and 193.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-15 16:41:46,536 INFO L158 Benchmark]: RCFGBuilder took 217.15ms. Allocated memory is still 218.1MB. Free memory was 193.6MB in the beginning and 182.8MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-15 16:41:46,537 INFO L158 Benchmark]: TraceAbstraction took 64441.51ms. Allocated memory is still 218.1MB. Free memory was 182.1MB in the beginning and 173.1MB in the end (delta: 9.0MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2022-04-15 16:41:46,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 173.0MB. Free memory was 138.9MB in the beginning and 138.9MB in the end (delta: 73.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.00ms. Allocated memory was 173.0MB in the beginning and 218.1MB in the end (delta: 45.1MB). Free memory was 122.4MB in the beginning and 195.0MB in the end (delta: -72.6MB). Peak memory consumption was 11.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.77ms. Allocated memory is still 218.1MB. Free memory was 195.0MB in the beginning and 193.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 217.15ms. Allocated memory is still 218.1MB. Free memory was 193.6MB in the beginning and 182.8MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 64441.51ms. Allocated memory is still 218.1MB. Free memory was 182.1MB in the beginning and 173.1MB in the end (delta: 9.0MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 156 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 62 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 13, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 57 PreInvPairs, 85 NumberOfFragments, 92 HoareAnnotationTreeSize, 57 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 27 FomulaSimplificationsInter, 71 FormulaSimplificationTreeSizeReductionInter, 0.1s 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: 27]: Loop Invariant Derived loop invariant: x * 2 == y + y * y - ProcedureContractResult [Line: 6]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: !(1 <= \old(cond)) || 1 <= cond RESULT: Ultimate proved your program to be correct! [2022-04-15 16:41:46,558 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...