/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench/ps5-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 04:33:23,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 04:33:23,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 04:33:23,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 04:33:23,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 04:33:23,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 04:33:23,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 04:33:23,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-08 04:33:23,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 04:33:23,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 04:33:23,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 04:33:23,945 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 04:33:23,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 04:33:23,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 04:33:23,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 04:33:23,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 04:33:23,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 04:33:23,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 04:33:23,946 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 04:33:23,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 04:33:23,947 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 04:33:23,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 04:33:23,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 04:33:23,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 04:33:23,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 04:33:23,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 04:33:23,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 04:33:23,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 04:33:23,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 04:33:23,948 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 04:33:23,948 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 04:33:23,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 04:33:23,948 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 04:33:23,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 04:33:24,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 04:33:24,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 04:33:24,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 04:33:24,177 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 04:33:24,178 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 04:33:24,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/ps5-ll.c [2022-04-08 04:33:24,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f62bb04/9f186d817ec243cb9aa4d8fe9c1ce2e4/FLAG65314d12a [2022-04-08 04:33:24,571 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 04:33:24,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/ps5-ll.c [2022-04-08 04:33:24,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f62bb04/9f186d817ec243cb9aa4d8fe9c1ce2e4/FLAG65314d12a [2022-04-08 04:33:24,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4f62bb04/9f186d817ec243cb9aa4d8fe9c1ce2e4 [2022-04-08 04:33:24,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 04:33:24,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 04:33:24,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 04:33:24,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 04:33:24,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 04:33:24,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cde434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24, skipping insertion in model container [2022-04-08 04:33:24,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 04:33:24,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 04:33:24,721 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/ps5-ll.c[458,471] [2022-04-08 04:33:24,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 04:33:24,754 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 04:33:24,765 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/ps5-ll.c[458,471] [2022-04-08 04:33:24,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 04:33:24,792 INFO L208 MainTranslator]: Completed translation [2022-04-08 04:33:24,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24 WrapperNode [2022-04-08 04:33:24,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 04:33:24,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 04:33:24,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 04:33:24,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 04:33:24,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 04:33:24,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 04:33:24,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 04:33:24,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 04:33:24,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24" (1/1) ... [2022-04-08 04:33:24,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 04:33:24,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 04:33:24,847 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) [2022-04-08 04:33:24,865 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 [2022-04-08 04:33:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 04:33:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 04:33:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 04:33:24,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 04:33:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 04:33:24,877 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 04:33:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 04:33:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 04:33:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 04:33:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 04:33:24,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-04-08 04:33:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 04:33:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 04:33:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 04:33:24,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 04:33:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 04:33:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 04:33:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 04:33:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 04:33:24,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 04:33:24,925 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 04:33:24,927 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 04:33:25,077 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 04:33:25,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 04:33:25,088 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 04:33:25,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 04:33:25 BoogieIcfgContainer [2022-04-08 04:33:25,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 04:33:25,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 04:33:25,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 04:33:25,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 04:33:25,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 04:33:24" (1/3) ... [2022-04-08 04:33:25,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479fd79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 04:33:25, skipping insertion in model container [2022-04-08 04:33:25,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 04:33:24" (2/3) ... [2022-04-08 04:33:25,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479fd79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 04:33:25, skipping insertion in model container [2022-04-08 04:33:25,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 04:33:25" (3/3) ... [2022-04-08 04:33:25,094 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll.c [2022-04-08 04:33:25,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 04:33:25,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 04:33:25,145 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 04:33:25,150 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 [2022-04-08 04:33:25,150 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 04:33:25,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 04:33:25,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-08 04:33:25,181 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:33:25,181 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:33:25,183 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:33:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:33:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash -630235283, now seen corresponding path program 1 times [2022-04-08 04:33:25,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:25,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [588261873] [2022-04-08 04:33:25,206 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 04:33:25,206 INFO L85 PathProgramCache]: Analyzing trace with hash -630235283, now seen corresponding path program 2 times [2022-04-08 04:33:25,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:33:25,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617080855] [2022-04-08 04:33:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:33:25,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:33:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:33:25,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 04:33:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:33:25,375 INFO L290 TraceCheckUtils]: 0: Hoare triple {40#(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); {31#true} is VALID [2022-04-08 04:33:25,376 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#true} assume true; {31#true} is VALID [2022-04-08 04:33:25,376 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {31#true} {31#true} #60#return; {31#true} is VALID [2022-04-08 04:33:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-08 04:33:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:33:25,389 INFO L290 TraceCheckUtils]: 0: Hoare triple {31#true} ~cond := #in~cond; {31#true} is VALID [2022-04-08 04:33:25,390 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#true} assume 0 == ~cond;assume false; {32#false} is VALID [2022-04-08 04:33:25,390 INFO L290 TraceCheckUtils]: 2: Hoare triple {32#false} assume true; {32#false} is VALID [2022-04-08 04:33:25,390 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {32#false} {31#true} #52#return; {32#false} is VALID [2022-04-08 04:33:25,392 INFO L272 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {40#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 04:33:25,392 INFO L290 TraceCheckUtils]: 1: Hoare triple {40#(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); {31#true} is VALID [2022-04-08 04:33:25,393 INFO L290 TraceCheckUtils]: 2: Hoare triple {31#true} assume true; {31#true} is VALID [2022-04-08 04:33:25,393 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {31#true} {31#true} #60#return; {31#true} is VALID [2022-04-08 04:33:25,393 INFO L272 TraceCheckUtils]: 4: Hoare triple {31#true} call #t~ret5 := main(); {31#true} is VALID [2022-04-08 04:33:25,393 INFO L290 TraceCheckUtils]: 5: Hoare triple {31#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {31#true} is VALID [2022-04-08 04:33:25,394 INFO L272 TraceCheckUtils]: 6: Hoare triple {31#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {31#true} is VALID [2022-04-08 04:33:25,394 INFO L290 TraceCheckUtils]: 7: Hoare triple {31#true} ~cond := #in~cond; {31#true} is VALID [2022-04-08 04:33:25,394 INFO L290 TraceCheckUtils]: 8: Hoare triple {31#true} assume 0 == ~cond;assume false; {32#false} is VALID [2022-04-08 04:33:25,394 INFO L290 TraceCheckUtils]: 9: Hoare triple {32#false} assume true; {32#false} is VALID [2022-04-08 04:33:25,395 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {32#false} {31#true} #52#return; {32#false} is VALID [2022-04-08 04:33:25,396 INFO L290 TraceCheckUtils]: 11: Hoare triple {32#false} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {32#false} is VALID [2022-04-08 04:33:25,396 INFO L290 TraceCheckUtils]: 12: Hoare triple {32#false} assume false; {32#false} is VALID [2022-04-08 04:33:25,396 INFO L272 TraceCheckUtils]: 13: Hoare triple {32#false} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {32#false} is VALID [2022-04-08 04:33:25,396 INFO L290 TraceCheckUtils]: 14: Hoare triple {32#false} ~cond := #in~cond; {32#false} is VALID [2022-04-08 04:33:25,396 INFO L290 TraceCheckUtils]: 15: Hoare triple {32#false} assume 0 == ~cond; {32#false} is VALID [2022-04-08 04:33:25,397 INFO L290 TraceCheckUtils]: 16: Hoare triple {32#false} assume !false; {32#false} is VALID [2022-04-08 04:33:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 04:33:25,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:33:25,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617080855] [2022-04-08 04:33:25,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617080855] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:33:25,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:33:25,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 04:33:25,401 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:33:25,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [588261873] [2022-04-08 04:33:25,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [588261873] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:33:25,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:33:25,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 04:33:25,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828606670] [2022-04-08 04:33:25,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:33:25,407 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 [2022-04-08 04:33:25,408 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:33:25,410 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) [2022-04-08 04:33:25,433 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:25,434 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 04:33:25,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:25,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 04:33:25,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 04:33:25,449 INFO L87 Difference]: Start difference. First operand has 28 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2022-04-08 04:33:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:25,546 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2022-04-08 04:33:25,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 04:33:25,546 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 [2022-04-08 04:33:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:33:25,547 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) [2022-04-08 04:33:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2022-04-08 04:33:25,569 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) [2022-04-08 04:33:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2022-04-08 04:33:25,576 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 61 transitions. [2022-04-08 04:33:25,652 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 61 edges. 61 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:25,657 INFO L225 Difference]: With dead ends: 47 [2022-04-08 04:33:25,657 INFO L226 Difference]: Without dead ends: 23 [2022-04-08 04:33:25,659 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 [2022-04-08 04:33:25,661 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 04:33:25,663 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 04:33:25,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-04-08 04:33:25,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-04-08 04:33:25,687 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:33:25,688 INFO L82 GeneralOperation]: Start isEquivalent. First operand 23 states. Second operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 04:33:25,688 INFO L74 IsIncluded]: Start isIncluded. First operand 23 states. Second operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 04:33:25,689 INFO L87 Difference]: Start difference. First operand 23 states. Second operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 04:33:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:25,692 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-08 04:33:25,692 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-04-08 04:33:25,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:25,692 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:25,693 INFO L74 IsIncluded]: Start isIncluded. First operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 23 states. [2022-04-08 04:33:25,693 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 23 states. [2022-04-08 04:33:25,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:25,695 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-04-08 04:33:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-04-08 04:33:25,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:25,696 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:25,696 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:33:25,696 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:33:25,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 04:33:25,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-04-08 04:33:25,699 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2022-04-08 04:33:25,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:33:25,699 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-04-08 04:33:25,699 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) [2022-04-08 04:33:25,699 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 23 states and 25 transitions. [2022-04-08 04:33:25,755 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-04-08 04:33:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-08 04:33:25,756 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:33:25,756 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:33:25,756 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 04:33:25,756 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:33:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:33:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash 51610547, now seen corresponding path program 1 times [2022-04-08 04:33:25,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:25,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1849252098] [2022-04-08 04:33:25,757 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 04:33:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash 51610547, now seen corresponding path program 2 times [2022-04-08 04:33:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:33:25,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075006139] [2022-04-08 04:33:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:33:25,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:33:25,777 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 04:33:25,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051676545] [2022-04-08 04:33:25,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 04:33:25,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 04:33:25,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 04:33:25,780 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) [2022-04-08 04:33:25,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-08 04:33:25,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-08 04:33:25,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 04:33:25,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-08 04:33:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:33:25,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 04:33:25,957 INFO L272 TraceCheckUtils]: 0: Hoare triple {229#true} call ULTIMATE.init(); {229#true} is VALID [2022-04-08 04:33:25,957 INFO L290 TraceCheckUtils]: 1: Hoare triple {229#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); {229#true} is VALID [2022-04-08 04:33:25,957 INFO L290 TraceCheckUtils]: 2: Hoare triple {229#true} assume true; {229#true} is VALID [2022-04-08 04:33:25,957 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {229#true} {229#true} #60#return; {229#true} is VALID [2022-04-08 04:33:25,958 INFO L272 TraceCheckUtils]: 4: Hoare triple {229#true} call #t~ret5 := main(); {229#true} is VALID [2022-04-08 04:33:25,958 INFO L290 TraceCheckUtils]: 5: Hoare triple {229#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {229#true} is VALID [2022-04-08 04:33:25,958 INFO L272 TraceCheckUtils]: 6: Hoare triple {229#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {229#true} is VALID [2022-04-08 04:33:25,958 INFO L290 TraceCheckUtils]: 7: Hoare triple {229#true} ~cond := #in~cond; {229#true} is VALID [2022-04-08 04:33:25,958 INFO L290 TraceCheckUtils]: 8: Hoare triple {229#true} assume !(0 == ~cond); {229#true} is VALID [2022-04-08 04:33:25,958 INFO L290 TraceCheckUtils]: 9: Hoare triple {229#true} assume true; {229#true} is VALID [2022-04-08 04:33:25,959 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {229#true} {229#true} #52#return; {229#true} is VALID [2022-04-08 04:33:25,959 INFO L290 TraceCheckUtils]: 11: Hoare triple {229#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {267#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:25,960 INFO L290 TraceCheckUtils]: 12: Hoare triple {267#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {267#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:25,961 INFO L272 TraceCheckUtils]: 13: Hoare triple {267#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {274#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 04:33:25,961 INFO L290 TraceCheckUtils]: 14: Hoare triple {274#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {278#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 04:33:25,962 INFO L290 TraceCheckUtils]: 15: Hoare triple {278#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {230#false} is VALID [2022-04-08 04:33:25,962 INFO L290 TraceCheckUtils]: 16: Hoare triple {230#false} assume !false; {230#false} is VALID [2022-04-08 04:33:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 04:33:25,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-08 04:33:25,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:33:25,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075006139] [2022-04-08 04:33:25,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 04:33:25,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051676545] [2022-04-08 04:33:25,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051676545] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:33:25,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:33:25,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 04:33:25,964 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:33:25,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1849252098] [2022-04-08 04:33:25,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1849252098] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:33:25,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:33:25,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 04:33:25,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033044098] [2022-04-08 04:33:25,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:33:25,965 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 [2022-04-08 04:33:25,965 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:33:25,965 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) [2022-04-08 04:33:25,976 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:25,977 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 04:33:25,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:25,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 04:33:25,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-08 04:33:25,978 INFO L87 Difference]: Start difference. First operand 23 states and 25 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) [2022-04-08 04:33:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:26,081 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-04-08 04:33:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 04:33:26,081 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 [2022-04-08 04:33:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:33:26,082 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) [2022-04-08 04:33:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2022-04-08 04:33:26,083 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) [2022-04-08 04:33:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2022-04-08 04:33:26,085 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 38 transitions. [2022-04-08 04:33:26,111 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:26,112 INFO L225 Difference]: With dead ends: 34 [2022-04-08 04:33:26,112 INFO L226 Difference]: Without dead ends: 30 [2022-04-08 04:33:26,112 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 [2022-04-08 04:33:26,113 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 04:33:26,114 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 77 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 04:33:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-08 04:33:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-08 04:33:26,122 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:33:26,123 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 04:33:26,123 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 04:33:26,123 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 04:33:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:26,125 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-08 04:33:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-08 04:33:26,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:26,125 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:26,126 INFO L74 IsIncluded]: Start isIncluded. First operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 30 states. [2022-04-08 04:33:26,126 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 30 states. [2022-04-08 04:33:26,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:26,127 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-04-08 04:33:26,127 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-08 04:33:26,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:26,128 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:26,128 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:33:26,128 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:33:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 04:33:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2022-04-08 04:33:26,130 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 17 [2022-04-08 04:33:26,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:33:26,130 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2022-04-08 04:33:26,130 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) [2022-04-08 04:33:26,130 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 30 states and 32 transitions. [2022-04-08 04:33:26,157 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:26,157 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2022-04-08 04:33:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-04-08 04:33:26,158 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:33:26,158 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] [2022-04-08 04:33:26,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-08 04:33:26,374 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 [2022-04-08 04:33:26,375 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:33:26,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:33:26,376 INFO L85 PathProgramCache]: Analyzing trace with hash 311787922, now seen corresponding path program 1 times [2022-04-08 04:33:26,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:26,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1305518505] [2022-04-08 04:33:26,530 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 04:33:26,531 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-04-08 04:33:26,531 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 04:33:26,531 INFO L85 PathProgramCache]: Analyzing trace with hash 311787922, now seen corresponding path program 2 times [2022-04-08 04:33:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:33:26,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049521738] [2022-04-08 04:33:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:33:26,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:33:26,541 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 04:33:26,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943617263] [2022-04-08 04:33:26,541 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 04:33:26,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 04:33:26,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 04:33:26,542 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) [2022-04-08 04:33:26,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-08 04:33:26,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 04:33:26,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 04:33:26,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-08 04:33:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:33:26,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 04:33:27,006 INFO L272 TraceCheckUtils]: 0: Hoare triple {474#true} call ULTIMATE.init(); {474#true} is VALID [2022-04-08 04:33:27,006 INFO L290 TraceCheckUtils]: 1: Hoare triple {474#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); {474#true} is VALID [2022-04-08 04:33:27,006 INFO L290 TraceCheckUtils]: 2: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-08 04:33:27,006 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {474#true} {474#true} #60#return; {474#true} is VALID [2022-04-08 04:33:27,007 INFO L272 TraceCheckUtils]: 4: Hoare triple {474#true} call #t~ret5 := main(); {474#true} is VALID [2022-04-08 04:33:27,007 INFO L290 TraceCheckUtils]: 5: Hoare triple {474#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {474#true} is VALID [2022-04-08 04:33:27,007 INFO L272 TraceCheckUtils]: 6: Hoare triple {474#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {474#true} is VALID [2022-04-08 04:33:27,007 INFO L290 TraceCheckUtils]: 7: Hoare triple {474#true} ~cond := #in~cond; {474#true} is VALID [2022-04-08 04:33:27,007 INFO L290 TraceCheckUtils]: 8: Hoare triple {474#true} assume !(0 == ~cond); {474#true} is VALID [2022-04-08 04:33:27,007 INFO L290 TraceCheckUtils]: 9: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-08 04:33:27,007 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {474#true} {474#true} #52#return; {474#true} is VALID [2022-04-08 04:33:27,010 INFO L290 TraceCheckUtils]: 11: Hoare triple {474#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {512#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:27,011 INFO L290 TraceCheckUtils]: 12: Hoare triple {512#(and (= main_~x~0 0) (= main_~y~0 0))} assume !false; {512#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:27,011 INFO L272 TraceCheckUtils]: 13: Hoare triple {512#(and (= main_~x~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {474#true} is VALID [2022-04-08 04:33:27,011 INFO L290 TraceCheckUtils]: 14: Hoare triple {474#true} ~cond := #in~cond; {474#true} is VALID [2022-04-08 04:33:27,011 INFO L290 TraceCheckUtils]: 15: Hoare triple {474#true} assume !(0 == ~cond); {474#true} is VALID [2022-04-08 04:33:27,011 INFO L290 TraceCheckUtils]: 16: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-08 04:33:27,013 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {474#true} {512#(and (= main_~x~0 0) (= main_~y~0 0))} #54#return; {512#(and (= main_~x~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:27,013 INFO L290 TraceCheckUtils]: 18: Hoare triple {512#(and (= main_~x~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {534#(and (= main_~x~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0)) (= main_~y~0 1))} is VALID [2022-04-08 04:33:27,014 INFO L290 TraceCheckUtils]: 19: Hoare triple {534#(and (= main_~x~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0)) (= main_~y~0 1))} assume !false; {534#(and (= main_~x~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0)) (= main_~y~0 1))} is VALID [2022-04-08 04:33:27,015 INFO L272 TraceCheckUtils]: 20: Hoare triple {534#(and (= main_~x~0 (* (* main_~y~0 (* main_~y~0 main_~y~0)) main_~y~0)) (= main_~y~0 1))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {541#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 04:33:27,015 INFO L290 TraceCheckUtils]: 21: Hoare triple {541#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {545#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 04:33:27,015 INFO L290 TraceCheckUtils]: 22: Hoare triple {545#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {475#false} is VALID [2022-04-08 04:33:27,016 INFO L290 TraceCheckUtils]: 23: Hoare triple {475#false} assume !false; {475#false} is VALID [2022-04-08 04:33:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 04:33:27,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 04:33:27,281 INFO L290 TraceCheckUtils]: 23: Hoare triple {475#false} assume !false; {475#false} is VALID [2022-04-08 04:33:27,282 INFO L290 TraceCheckUtils]: 22: Hoare triple {545#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {475#false} is VALID [2022-04-08 04:33:27,283 INFO L290 TraceCheckUtils]: 21: Hoare triple {541#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {545#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 04:33:27,284 INFO L272 TraceCheckUtils]: 20: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {541#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 04:33:27,284 INFO L290 TraceCheckUtils]: 19: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} assume !false; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-08 04:33:28,755 INFO L290 TraceCheckUtils]: 18: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-08 04:33:28,756 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {474#true} {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} #54#return; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-08 04:33:28,757 INFO L290 TraceCheckUtils]: 16: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-08 04:33:28,757 INFO L290 TraceCheckUtils]: 15: Hoare triple {474#true} assume !(0 == ~cond); {474#true} is VALID [2022-04-08 04:33:28,757 INFO L290 TraceCheckUtils]: 14: Hoare triple {474#true} ~cond := #in~cond; {474#true} is VALID [2022-04-08 04:33:28,757 INFO L272 TraceCheckUtils]: 13: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {474#true} is VALID [2022-04-08 04:33:28,758 INFO L290 TraceCheckUtils]: 12: Hoare triple {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} assume !false; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-08 04:33:28,758 INFO L290 TraceCheckUtils]: 11: Hoare triple {474#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {561#(= (+ main_~y~0 (* 30 main_~x~0)) (+ (* (* main_~y~0 main_~y~0 main_~y~0 main_~y~0) 15) (* 6 (* main_~y~0 main_~y~0 main_~y~0 main_~y~0 main_~y~0)) (* (* main_~y~0 main_~y~0 main_~y~0) 10)))} is VALID [2022-04-08 04:33:28,758 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {474#true} {474#true} #52#return; {474#true} is VALID [2022-04-08 04:33:28,758 INFO L290 TraceCheckUtils]: 9: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-08 04:33:28,758 INFO L290 TraceCheckUtils]: 8: Hoare triple {474#true} assume !(0 == ~cond); {474#true} is VALID [2022-04-08 04:33:28,759 INFO L290 TraceCheckUtils]: 7: Hoare triple {474#true} ~cond := #in~cond; {474#true} is VALID [2022-04-08 04:33:28,759 INFO L272 TraceCheckUtils]: 6: Hoare triple {474#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {474#true} is VALID [2022-04-08 04:33:28,759 INFO L290 TraceCheckUtils]: 5: Hoare triple {474#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {474#true} is VALID [2022-04-08 04:33:28,759 INFO L272 TraceCheckUtils]: 4: Hoare triple {474#true} call #t~ret5 := main(); {474#true} is VALID [2022-04-08 04:33:28,759 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {474#true} {474#true} #60#return; {474#true} is VALID [2022-04-08 04:33:28,759 INFO L290 TraceCheckUtils]: 2: Hoare triple {474#true} assume true; {474#true} is VALID [2022-04-08 04:33:28,759 INFO L290 TraceCheckUtils]: 1: Hoare triple {474#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); {474#true} is VALID [2022-04-08 04:33:28,759 INFO L272 TraceCheckUtils]: 0: Hoare triple {474#true} call ULTIMATE.init(); {474#true} is VALID [2022-04-08 04:33:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-08 04:33:28,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:33:28,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049521738] [2022-04-08 04:33:28,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 04:33:28,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943617263] [2022-04-08 04:33:28,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943617263] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-08 04:33:28,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-08 04:33:28,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-04-08 04:33:28,761 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:33:28,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1305518505] [2022-04-08 04:33:28,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1305518505] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:33:28,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:33:28,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-08 04:33:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086833733] [2022-04-08 04:33:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:33:28,762 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 [2022-04-08 04:33:28,762 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:33:28,762 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) [2022-04-08 04:33:28,872 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:28,872 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-08 04:33:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-08 04:33:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-08 04:33:28,873 INFO L87 Difference]: Start difference. First operand 30 states and 32 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) [2022-04-08 04:33:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:28,971 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-04-08 04:33:28,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-08 04:33:28,972 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 [2022-04-08 04:33:28,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:33:28,972 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) [2022-04-08 04:33:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-08 04:33:28,973 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) [2022-04-08 04:33:28,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2022-04-08 04:33:28,974 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 30 transitions. [2022-04-08 04:33:29,371 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:29,372 INFO L225 Difference]: With dead ends: 36 [2022-04-08 04:33:29,373 INFO L226 Difference]: Without dead ends: 32 [2022-04-08 04:33:29,373 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-08 04:33:29,374 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 04:33:29,374 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 67 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 04:33:29,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-04-08 04:33:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-04-08 04:33:29,386 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:33:29,387 INFO L82 GeneralOperation]: Start isEquivalent. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 04:33:29,387 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 04:33:29,387 INFO L87 Difference]: Start difference. First operand 32 states. Second operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 04:33:29,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:29,388 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-04-08 04:33:29,388 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-04-08 04:33:29,389 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:29,389 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:29,389 INFO L74 IsIncluded]: Start isIncluded. First operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 32 states. [2022-04-08 04:33:29,389 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 32 states. [2022-04-08 04:33:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:29,391 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-04-08 04:33:29,391 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-04-08 04:33:29,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:29,391 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:29,391 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:33:29,391 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:33:29,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-08 04:33:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-04-08 04:33:29,392 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 24 [2022-04-08 04:33:29,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:33:29,393 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-04-08 04:33:29,393 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) [2022-04-08 04:33:29,393 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 32 states and 33 transitions. [2022-04-08 04:33:31,638 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 32 inductive. 0 not inductive. 1 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-04-08 04:33:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-08 04:33:31,640 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:33:31,640 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:33:31,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-08 04:33:31,845 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,SelfDestructingSolverStorable2 [2022-04-08 04:33:31,845 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:33:31,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:33:31,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1106328449, now seen corresponding path program 1 times [2022-04-08 04:33:31,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:31,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1790211128] [2022-04-08 04:33:31,966 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 04:33:31,966 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-04-08 04:33:31,966 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 04:33:31,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1106328449, now seen corresponding path program 2 times [2022-04-08 04:33:31,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:33:31,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383103795] [2022-04-08 04:33:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:33:31,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:33:31,976 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 04:33:31,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313253713] [2022-04-08 04:33:31,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-08 04:33:31,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 04:33:31,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 04:33:31,977 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) [2022-04-08 04:33:31,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-08 04:33:32,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-08 04:33:32,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 04:33:32,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-08 04:33:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:33:32,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 04:33:32,305 INFO L272 TraceCheckUtils]: 0: Hoare triple {826#true} call ULTIMATE.init(); {826#true} is VALID [2022-04-08 04:33:32,305 INFO L290 TraceCheckUtils]: 1: Hoare triple {826#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); {826#true} is VALID [2022-04-08 04:33:32,306 INFO L290 TraceCheckUtils]: 2: Hoare triple {826#true} assume true; {826#true} is VALID [2022-04-08 04:33:32,306 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {826#true} {826#true} #60#return; {826#true} is VALID [2022-04-08 04:33:32,306 INFO L272 TraceCheckUtils]: 4: Hoare triple {826#true} call #t~ret5 := main(); {826#true} is VALID [2022-04-08 04:33:32,306 INFO L290 TraceCheckUtils]: 5: Hoare triple {826#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {826#true} is VALID [2022-04-08 04:33:32,306 INFO L272 TraceCheckUtils]: 6: Hoare triple {826#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {826#true} is VALID [2022-04-08 04:33:32,306 INFO L290 TraceCheckUtils]: 7: Hoare triple {826#true} ~cond := #in~cond; {826#true} is VALID [2022-04-08 04:33:32,306 INFO L290 TraceCheckUtils]: 8: Hoare triple {826#true} assume !(0 == ~cond); {826#true} is VALID [2022-04-08 04:33:32,306 INFO L290 TraceCheckUtils]: 9: Hoare triple {826#true} assume true; {826#true} is VALID [2022-04-08 04:33:32,307 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {826#true} {826#true} #52#return; {826#true} is VALID [2022-04-08 04:33:32,307 INFO L290 TraceCheckUtils]: 11: Hoare triple {826#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {864#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:32,307 INFO L290 TraceCheckUtils]: 12: Hoare triple {864#(and (= main_~c~0 0) (= main_~y~0 0))} assume !false; {864#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:32,307 INFO L272 TraceCheckUtils]: 13: Hoare triple {864#(and (= main_~c~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {826#true} is VALID [2022-04-08 04:33:32,308 INFO L290 TraceCheckUtils]: 14: Hoare triple {826#true} ~cond := #in~cond; {826#true} is VALID [2022-04-08 04:33:32,308 INFO L290 TraceCheckUtils]: 15: Hoare triple {826#true} assume !(0 == ~cond); {826#true} is VALID [2022-04-08 04:33:32,308 INFO L290 TraceCheckUtils]: 16: Hoare triple {826#true} assume true; {826#true} is VALID [2022-04-08 04:33:32,310 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {826#true} {864#(and (= main_~c~0 0) (= main_~y~0 0))} #54#return; {864#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:32,310 INFO L290 TraceCheckUtils]: 18: Hoare triple {864#(and (= main_~c~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {886#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-08 04:33:32,311 INFO L290 TraceCheckUtils]: 19: Hoare triple {886#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} assume !false; {886#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-08 04:33:32,311 INFO L272 TraceCheckUtils]: 20: Hoare triple {886#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {826#true} is VALID [2022-04-08 04:33:32,311 INFO L290 TraceCheckUtils]: 21: Hoare triple {826#true} ~cond := #in~cond; {826#true} is VALID [2022-04-08 04:33:32,311 INFO L290 TraceCheckUtils]: 22: Hoare triple {826#true} assume !(0 == ~cond); {826#true} is VALID [2022-04-08 04:33:32,311 INFO L290 TraceCheckUtils]: 23: Hoare triple {826#true} assume true; {826#true} is VALID [2022-04-08 04:33:32,312 INFO L284 TraceCheckUtils]: 24: Hoare quadruple {826#true} {886#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} #54#return; {886#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} is VALID [2022-04-08 04:33:32,313 INFO L290 TraceCheckUtils]: 25: Hoare triple {886#(and (= (+ (- 1) main_~y~0) 0) (< 0 main_~k~0) (<= main_~c~0 1))} assume !(~c~0 < ~k~0); {908#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} is VALID [2022-04-08 04:33:32,313 INFO L272 TraceCheckUtils]: 26: Hoare triple {908#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {826#true} is VALID [2022-04-08 04:33:32,313 INFO L290 TraceCheckUtils]: 27: Hoare triple {826#true} ~cond := #in~cond; {826#true} is VALID [2022-04-08 04:33:32,313 INFO L290 TraceCheckUtils]: 28: Hoare triple {826#true} assume !(0 == ~cond); {826#true} is VALID [2022-04-08 04:33:32,313 INFO L290 TraceCheckUtils]: 29: Hoare triple {826#true} assume true; {826#true} is VALID [2022-04-08 04:33:32,314 INFO L284 TraceCheckUtils]: 30: Hoare quadruple {826#true} {908#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} #56#return; {908#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} is VALID [2022-04-08 04:33:32,324 INFO L272 TraceCheckUtils]: 31: Hoare triple {908#(and (= (+ (- 1) main_~y~0) 0) (<= main_~k~0 1) (< 0 main_~k~0))} call __VERIFIER_assert((if ~k~0 * ~y~0 == ~y~0 * ~y~0 then 1 else 0)); {927#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 04:33:32,324 INFO L290 TraceCheckUtils]: 32: Hoare triple {927#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {931#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 04:33:32,324 INFO L290 TraceCheckUtils]: 33: Hoare triple {931#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {827#false} is VALID [2022-04-08 04:33:32,325 INFO L290 TraceCheckUtils]: 34: Hoare triple {827#false} assume !false; {827#false} is VALID [2022-04-08 04:33:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-08 04:33:32,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 04:33:32,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:33:32,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383103795] [2022-04-08 04:33:32,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 04:33:32,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313253713] [2022-04-08 04:33:32,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313253713] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 04:33:32,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-08 04:33:32,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-04-08 04:33:32,630 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:33:32,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1790211128] [2022-04-08 04:33:32,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1790211128] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:33:32,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:33:32,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-08 04:33:32,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410558539] [2022-04-08 04:33:32,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:33:32,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 35 [2022-04-08 04:33:32,631 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:33:32,632 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-08 04:33:32,654 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:32,654 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-08 04:33:32,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:32,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-08 04:33:32,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-04-08 04:33:32,655 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-08 04:33:32,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:32,878 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2022-04-08 04:33:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-08 04:33:32,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 35 [2022-04-08 04:33:32,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:33:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-08 04:33:32,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2022-04-08 04:33:32,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-08 04:33:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2022-04-08 04:33:32,881 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 40 transitions. [2022-04-08 04:33:32,914 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:32,915 INFO L225 Difference]: With dead ends: 41 [2022-04-08 04:33:32,915 INFO L226 Difference]: Without dead ends: 35 [2022-04-08 04:33:32,917 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-08 04:33:32,918 INFO L913 BasicCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 04:33:32,918 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 125 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 04:33:32,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-08 04:33:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-08 04:33:32,933 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:33:32,936 INFO L82 GeneralOperation]: Start isEquivalent. First operand 35 states. Second operand has 35 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 04:33:32,937 INFO L74 IsIncluded]: Start isIncluded. First operand 35 states. Second operand has 35 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 04:33:32,938 INFO L87 Difference]: Start difference. First operand 35 states. Second operand has 35 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 04:33:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:32,940 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-04-08 04:33:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-04-08 04:33:32,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:32,940 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:32,941 INFO L74 IsIncluded]: Start isIncluded. First operand has 35 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 35 states. [2022-04-08 04:33:32,941 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 35 states. [2022-04-08 04:33:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:32,946 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-04-08 04:33:32,946 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-04-08 04:33:32,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:32,949 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:32,949 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:33:32,949 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:33:32,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-08 04:33:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-04-08 04:33:32,951 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 35 [2022-04-08 04:33:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:33:32,952 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-04-08 04:33:32,953 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-04-08 04:33:32,953 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 35 states and 37 transitions. [2022-04-08 04:33:33,297 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 37 edges. 37 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-04-08 04:33:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-08 04:33:33,298 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:33:33,298 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:33:33,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-08 04:33:33,498 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 04:33:33,499 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:33:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:33:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1564024736, now seen corresponding path program 3 times [2022-04-08 04:33:33,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:33,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2045547416] [2022-04-08 04:33:33,584 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 04:33:33,584 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-04-08 04:33:33,584 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 04:33:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1564024736, now seen corresponding path program 4 times [2022-04-08 04:33:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:33:33,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795296290] [2022-04-08 04:33:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:33:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:33:33,606 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 04:33:33,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663666684] [2022-04-08 04:33:33,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-08 04:33:33,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 04:33:33,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 04:33:33,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 04:33:33,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-08 04:33:33,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-08 04:33:33,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-08 04:33:33,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-08 04:33:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 04:33:33,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-08 04:33:33,899 INFO L272 TraceCheckUtils]: 0: Hoare triple {1220#true} call ULTIMATE.init(); {1220#true} is VALID [2022-04-08 04:33:33,899 INFO L290 TraceCheckUtils]: 1: Hoare triple {1220#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); {1220#true} is VALID [2022-04-08 04:33:33,899 INFO L290 TraceCheckUtils]: 2: Hoare triple {1220#true} assume true; {1220#true} is VALID [2022-04-08 04:33:33,899 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1220#true} {1220#true} #60#return; {1220#true} is VALID [2022-04-08 04:33:33,899 INFO L272 TraceCheckUtils]: 4: Hoare triple {1220#true} call #t~ret5 := main(); {1220#true} is VALID [2022-04-08 04:33:33,899 INFO L290 TraceCheckUtils]: 5: Hoare triple {1220#true} havoc ~k~0;havoc ~y~0;havoc ~x~0;havoc ~c~0;assume -32768 <= #t~nondet4 && #t~nondet4 <= 32767;~k~0 := #t~nondet4;havoc #t~nondet4; {1220#true} is VALID [2022-04-08 04:33:33,899 INFO L272 TraceCheckUtils]: 6: Hoare triple {1220#true} call assume_abort_if_not((if ~k~0 <= 256 then 1 else 0)); {1220#true} is VALID [2022-04-08 04:33:33,900 INFO L290 TraceCheckUtils]: 7: Hoare triple {1220#true} ~cond := #in~cond; {1220#true} is VALID [2022-04-08 04:33:33,900 INFO L290 TraceCheckUtils]: 8: Hoare triple {1220#true} assume !(0 == ~cond); {1220#true} is VALID [2022-04-08 04:33:33,900 INFO L290 TraceCheckUtils]: 9: Hoare triple {1220#true} assume true; {1220#true} is VALID [2022-04-08 04:33:33,900 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1220#true} {1220#true} #52#return; {1220#true} is VALID [2022-04-08 04:33:33,900 INFO L290 TraceCheckUtils]: 11: Hoare triple {1220#true} ~y~0 := 0;~x~0 := 0;~c~0 := 0; {1258#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:33,901 INFO L290 TraceCheckUtils]: 12: Hoare triple {1258#(and (= main_~c~0 0) (= main_~y~0 0))} assume !false; {1258#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:33,901 INFO L272 TraceCheckUtils]: 13: Hoare triple {1258#(and (= main_~c~0 0) (= main_~y~0 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1220#true} is VALID [2022-04-08 04:33:33,901 INFO L290 TraceCheckUtils]: 14: Hoare triple {1220#true} ~cond := #in~cond; {1220#true} is VALID [2022-04-08 04:33:33,901 INFO L290 TraceCheckUtils]: 15: Hoare triple {1220#true} assume !(0 == ~cond); {1220#true} is VALID [2022-04-08 04:33:33,901 INFO L290 TraceCheckUtils]: 16: Hoare triple {1220#true} assume true; {1220#true} is VALID [2022-04-08 04:33:33,902 INFO L284 TraceCheckUtils]: 17: Hoare quadruple {1220#true} {1258#(and (= main_~c~0 0) (= main_~y~0 0))} #54#return; {1258#(and (= main_~c~0 0) (= main_~y~0 0))} is VALID [2022-04-08 04:33:33,902 INFO L290 TraceCheckUtils]: 18: Hoare triple {1258#(and (= main_~c~0 0) (= main_~y~0 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1280#(and (= (+ (- 1) main_~y~0) 0) (= (+ (- 1) main_~c~0) 0))} is VALID [2022-04-08 04:33:33,902 INFO L290 TraceCheckUtils]: 19: Hoare triple {1280#(and (= (+ (- 1) main_~y~0) 0) (= (+ (- 1) main_~c~0) 0))} assume !false; {1280#(and (= (+ (- 1) main_~y~0) 0) (= (+ (- 1) main_~c~0) 0))} is VALID [2022-04-08 04:33:33,902 INFO L272 TraceCheckUtils]: 20: Hoare triple {1280#(and (= (+ (- 1) main_~y~0) 0) (= (+ (- 1) main_~c~0) 0))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1220#true} is VALID [2022-04-08 04:33:33,902 INFO L290 TraceCheckUtils]: 21: Hoare triple {1220#true} ~cond := #in~cond; {1220#true} is VALID [2022-04-08 04:33:33,903 INFO L290 TraceCheckUtils]: 22: Hoare triple {1220#true} assume !(0 == ~cond); {1220#true} is VALID [2022-04-08 04:33:33,903 INFO L290 TraceCheckUtils]: 23: Hoare triple {1220#true} assume true; {1220#true} is VALID [2022-04-08 04:33:33,903 INFO L284 TraceCheckUtils]: 24: Hoare quadruple {1220#true} {1280#(and (= (+ (- 1) main_~y~0) 0) (= (+ (- 1) main_~c~0) 0))} #54#return; {1280#(and (= (+ (- 1) main_~y~0) 0) (= (+ (- 1) main_~c~0) 0))} is VALID [2022-04-08 04:33:33,903 INFO L290 TraceCheckUtils]: 25: Hoare triple {1280#(and (= (+ (- 1) main_~y~0) 0) (= (+ (- 1) main_~c~0) 0))} assume !!(~c~0 < ~k~0);~c~0 := 1 + ~c~0;~y~0 := 1 + ~y~0;~x~0 := ~y~0 * ~y~0 * ~y~0 * ~y~0 + ~x~0; {1302#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~c~0 2))} is VALID [2022-04-08 04:33:33,904 INFO L290 TraceCheckUtils]: 26: Hoare triple {1302#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~c~0 2))} assume !false; {1302#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~c~0 2))} is VALID [2022-04-08 04:33:33,904 INFO L272 TraceCheckUtils]: 27: Hoare triple {1302#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~c~0 2))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1220#true} is VALID [2022-04-08 04:33:33,904 INFO L290 TraceCheckUtils]: 28: Hoare triple {1220#true} ~cond := #in~cond; {1220#true} is VALID [2022-04-08 04:33:33,904 INFO L290 TraceCheckUtils]: 29: Hoare triple {1220#true} assume !(0 == ~cond); {1220#true} is VALID [2022-04-08 04:33:33,904 INFO L290 TraceCheckUtils]: 30: Hoare triple {1220#true} assume true; {1220#true} is VALID [2022-04-08 04:33:33,905 INFO L284 TraceCheckUtils]: 31: Hoare quadruple {1220#true} {1302#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~c~0 2))} #54#return; {1302#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~c~0 2))} is VALID [2022-04-08 04:33:33,905 INFO L290 TraceCheckUtils]: 32: Hoare triple {1302#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~c~0 2))} assume !(~c~0 < ~k~0); {1324#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~k~0 2))} is VALID [2022-04-08 04:33:33,905 INFO L272 TraceCheckUtils]: 33: Hoare triple {1324#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~k~0 2))} call __VERIFIER_assert((if 0 == 6 * ~y~0 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 15 * ~y~0 * ~y~0 * ~y~0 * ~y~0 + 10 * ~y~0 * ~y~0 * ~y~0 - 30 * ~x~0 - ~y~0 then 1 else 0)); {1220#true} is VALID [2022-04-08 04:33:33,905 INFO L290 TraceCheckUtils]: 34: Hoare triple {1220#true} ~cond := #in~cond; {1220#true} is VALID [2022-04-08 04:33:33,905 INFO L290 TraceCheckUtils]: 35: Hoare triple {1220#true} assume !(0 == ~cond); {1220#true} is VALID [2022-04-08 04:33:33,906 INFO L290 TraceCheckUtils]: 36: Hoare triple {1220#true} assume true; {1220#true} is VALID [2022-04-08 04:33:33,906 INFO L284 TraceCheckUtils]: 37: Hoare quadruple {1220#true} {1324#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~k~0 2))} #56#return; {1324#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~k~0 2))} is VALID [2022-04-08 04:33:33,907 INFO L272 TraceCheckUtils]: 38: Hoare triple {1324#(and (< 1 main_~k~0) (= (+ (- 2) main_~y~0) 0) (<= main_~k~0 2))} call __VERIFIER_assert((if ~k~0 * ~y~0 == ~y~0 * ~y~0 then 1 else 0)); {1343#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-08 04:33:33,907 INFO L290 TraceCheckUtils]: 39: Hoare triple {1343#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {1347#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-08 04:33:33,907 INFO L290 TraceCheckUtils]: 40: Hoare triple {1347#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {1221#false} is VALID [2022-04-08 04:33:33,908 INFO L290 TraceCheckUtils]: 41: Hoare triple {1221#false} assume !false; {1221#false} is VALID [2022-04-08 04:33:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-08 04:33:33,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-08 04:33:34,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 04:33:34,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795296290] [2022-04-08 04:33:34,188 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-08 04:33:34,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663666684] [2022-04-08 04:33:34,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663666684] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-08 04:33:34,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-08 04:33:34,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-04-08 04:33:34,189 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 04:33:34,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2045547416] [2022-04-08 04:33:34,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2045547416] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 04:33:34,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 04:33:34,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-04-08 04:33:34,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742558518] [2022-04-08 04:33:34,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 04:33:34,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 42 [2022-04-08 04:33:34,190 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 04:33:34,190 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-08 04:33:34,212 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:34,213 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-08 04:33:34,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:34,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-08 04:33:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-04-08 04:33:34,213 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-08 04:33:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:34,443 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-04-08 04:33:34,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-08 04:33:34,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 42 [2022-04-08 04:33:34,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 04:33:34,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-08 04:33:34,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 44 transitions. [2022-04-08 04:33:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-08 04:33:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 44 transitions. [2022-04-08 04:33:34,446 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 44 transitions. [2022-04-08 04:33:34,471 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:34,471 INFO L225 Difference]: With dead ends: 44 [2022-04-08 04:33:34,472 INFO L226 Difference]: Without dead ends: 38 [2022-04-08 04:33:34,472 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-04-08 04:33:34,472 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 2 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-08 04:33:34,473 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 154 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-08 04:33:34,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-04-08 04:33:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-04-08 04:33:34,486 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 04:33:34,486 INFO L82 GeneralOperation]: Start isEquivalent. First operand 38 states. Second operand has 38 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 04:33:34,486 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand has 38 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 04:33:34,486 INFO L87 Difference]: Start difference. First operand 38 states. Second operand has 38 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 04:33:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:34,487 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-08 04:33:34,487 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-08 04:33:34,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:34,488 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:34,488 INFO L74 IsIncluded]: Start isIncluded. First operand has 38 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 38 states. [2022-04-08 04:33:34,488 INFO L87 Difference]: Start difference. First operand has 38 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand 38 states. [2022-04-08 04:33:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 04:33:34,489 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-04-08 04:33:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-08 04:33:34,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 04:33:34,490 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 04:33:34,490 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 04:33:34,490 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 04:33:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-08 04:33:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-04-08 04:33:34,491 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 42 [2022-04-08 04:33:34,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 04:33:34,491 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-04-08 04:33:34,491 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-04-08 04:33:34,491 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 38 states and 41 transitions. [2022-04-08 04:33:34,939 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 04:33:34,940 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-04-08 04:33:34,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-04-08 04:33:34,940 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 04:33:34,940 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 04:33:34,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-08 04:33:35,141 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 04:33:35,141 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 04:33:35,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 04:33:35,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1951214241, now seen corresponding path program 5 times [2022-04-08 04:33:35,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 04:33:35,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1675804195] [2022-04-08 04:33:35,264 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-08 04:33:35,264 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONLINEAR_UPDATE [2022-04-08 04:33:35,264 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-08 04:33:35,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1951214241, now seen corresponding path program 6 times [2022-04-08 04:33:35,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 04:33:35,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373348491] [2022-04-08 04:33:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 04:33:35,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 04:33:35,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-08 04:33:35,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811977717] [2022-04-08 04:33:35,288 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-08 04:33:35,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-08 04:33:35,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 04:33:35,291 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-08 04:33:35,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process