/usr/bin/java -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/loops/sum_array-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 14:19:35,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 14:19:35,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 14:19:35,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 14:19:35,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 14:19:35,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 14:19:35,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 14:19:35,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 14:19:35,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 14:19:35,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 14:19:35,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 14:19:35,288 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 14:19:35,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 14:19:35,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 14:19:35,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 14:19:35,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 14:19:35,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 14:19:35,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 14:19:35,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 14:19:35,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 14:19:35,289 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 14:19:35,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 14:19:35,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 14:19:35,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 14:19:35,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 14:19:35,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 14:19:35,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 14:19:35,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 14:19:35,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 14:19:35,290 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 14:19:35,290 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 14:19:35,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 14:19:35,291 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 14:19:35,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 14:19:35,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 14:19:35,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 14:19:35,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 14:19:35,520 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 14:19:35,520 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 14:19:35,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-2.i [2022-04-06 14:19:35,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb02187d/d3c83226b1754f06b38ec9c5c1e1e1e3/FLAG1e0a0017d [2022-04-06 14:19:35,885 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 14:19:35,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i [2022-04-06 14:19:35,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb02187d/d3c83226b1754f06b38ec9c5c1e1e1e3/FLAG1e0a0017d [2022-04-06 14:19:36,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deb02187d/d3c83226b1754f06b38ec9c5c1e1e1e3 [2022-04-06 14:19:36,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 14:19:36,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 14:19:36,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 14:19:36,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 14:19:36,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 14:19:36,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f7ddb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36, skipping insertion in model container [2022-04-06 14:19:36,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 14:19:36,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 14:19:36,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i[938,951] [2022-04-06 14:19:36,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 14:19:36,485 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 14:19:36,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-2.i[938,951] [2022-04-06 14:19:36,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 14:19:36,507 INFO L208 MainTranslator]: Completed translation [2022-04-06 14:19:36,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36 WrapperNode [2022-04-06 14:19:36,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 14:19:36,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 14:19:36,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 14:19:36,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 14:19:36,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 14:19:36,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 14:19:36,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 14:19:36,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 14:19:36,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36" (1/1) ... [2022-04-06 14:19:36,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 14:19:36,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:19:36,557 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) [2022-04-06 14:19:36,564 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 [2022-04-06 14:19:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 14:19:36,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 14:19:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 14:19:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 14:19:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 14:19:36,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 14:19:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 14:19:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 14:19:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 14:19:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 14:19:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 14:19:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 14:19:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 14:19:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 14:19:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 14:19:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-06 14:19:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 14:19:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-06 14:19:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 14:19:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 14:19:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 14:19:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 14:19:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 14:19:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 14:19:36,650 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 14:19:36,651 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 14:19:36,865 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 14:19:36,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 14:19:36,870 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-06 14:19:36,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 02:19:36 BoogieIcfgContainer [2022-04-06 14:19:36,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 14:19:36,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 14:19:36,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 14:19:36,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 14:19:36,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 02:19:36" (1/3) ... [2022-04-06 14:19:36,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f4a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 02:19:36, skipping insertion in model container [2022-04-06 14:19:36,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 02:19:36" (2/3) ... [2022-04-06 14:19:36,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d4f4a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 02:19:36, skipping insertion in model container [2022-04-06 14:19:36,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 02:19:36" (3/3) ... [2022-04-06 14:19:36,879 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-2.i [2022-04-06 14:19:36,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 14:19:36,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 14:19:36,922 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 14:19:36,928 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 [2022-04-06 14:19:36,929 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 14:19:36,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-06 14:19:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-06 14:19:36,958 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:19:36,958 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:19:36,959 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:19:36,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:19:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1611689087, now seen corresponding path program 1 times [2022-04-06 14:19:36,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:19:36,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [162499354] [2022-04-06 14:19:36,979 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 14:19:36,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1611689087, now seen corresponding path program 2 times [2022-04-06 14:19:36,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:19:36,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266352394] [2022-04-06 14:19:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:19:36,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:19:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:19:37,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:19:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:19:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:19:37,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:19:37,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266352394] [2022-04-06 14:19:37,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266352394] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:19:37,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:19:37,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 14:19:37,178 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:19:37,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [162499354] [2022-04-06 14:19:37,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [162499354] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:19:37,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:19:37,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 14:19:37,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939452120] [2022-04-06 14:19:37,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:19:37,182 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 14:19:37,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:19:37,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 14:19:37,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 14:19:37,207 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:19:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:19:37,252 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2022-04-06 14:19:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 14:19:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-06 14:19:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:19:37,259 INFO L225 Difference]: With dead ends: 55 [2022-04-06 14:19:37,259 INFO L226 Difference]: Without dead ends: 27 [2022-04-06 14:19:37,262 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 14:19:37,265 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 28 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 14:19:37,267 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 14:19:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-06 14:19:37,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-06 14:19:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 14:19:37,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-04-06 14:19:37,297 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2022-04-06 14:19:37,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:19:37,297 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-04-06 14:19:37,297 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:19:37,298 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-04-06 14:19:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-06 14:19:37,299 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:19:37,299 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:19:37,299 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 14:19:37,300 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:19:37,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:19:37,301 INFO L85 PathProgramCache]: Analyzing trace with hash -717013641, now seen corresponding path program 1 times [2022-04-06 14:19:37,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:19:37,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [289826466] [2022-04-06 14:19:37,302 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 14:19:37,302 INFO L85 PathProgramCache]: Analyzing trace with hash -717013641, now seen corresponding path program 2 times [2022-04-06 14:19:37,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:19:37,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327746854] [2022-04-06 14:19:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:19:37,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:19:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:19:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:19:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:19:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:19:37,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:19:37,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327746854] [2022-04-06 14:19:37,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327746854] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:19:37,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:19:37,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 14:19:37,487 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 14:19:37,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [289826466] [2022-04-06 14:19:37,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [289826466] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 14:19:37,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 14:19:37,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 14:19:37,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268690137] [2022-04-06 14:19:37,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 14:19:37,489 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 14:19:37,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 14:19:37,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 14:19:37,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 14:19:37,490 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:19:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 14:19:37,635 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2022-04-06 14:19:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 14:19:37,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-04-06 14:19:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 14:19:37,642 INFO L225 Difference]: With dead ends: 62 [2022-04-06 14:19:37,642 INFO L226 Difference]: Without dead ends: 39 [2022-04-06 14:19:37,642 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-04-06 14:19:37,643 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 53 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 14:19:37,643 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 30 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 14:19:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-04-06 14:19:37,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30. [2022-04-06 14:19:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-06 14:19:37,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-04-06 14:19:37,649 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 17 [2022-04-06 14:19:37,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 14:19:37,650 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-04-06 14:19:37,650 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-06 14:19:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-04-06 14:19:37,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-06 14:19:37,650 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 14:19:37,650 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 14:19:37,650 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 14:19:37,651 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 14:19:37,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 14:19:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash -442514949, now seen corresponding path program 1 times [2022-04-06 14:19:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 14:19:37,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [608828073] [2022-04-06 14:19:37,678 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 3 HavocedVariables, 2 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-06 14:19:37,678 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-04-06 14:19:37,678 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-04-06 14:19:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash -442514949, now seen corresponding path program 2 times [2022-04-06 14:19:37,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 14:19:37,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175994043] [2022-04-06 14:19:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 14:19:37,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 14:19:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:19:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 14:19:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 14:19:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-06 14:19:38,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 14:19:38,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175994043] [2022-04-06 14:19:38,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175994043] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 14:19:38,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390004316] [2022-04-06 14:19:38,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 14:19:38,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 14:19:38,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 14:19:38,529 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) [2022-04-06 14:19:38,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 14:19:38,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 14:19:38,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 14:19:38,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 40 conjunts are in the unsatisfiable core [2022-04-06 14:19:38,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 14:19:38,693 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-04-06 14:19:38,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-04-06 14:19:38,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-06 14:19:38,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-06 14:19:38,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2022-04-06 14:19:39,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2022-04-06 14:19:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 14:19:39,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 14:19:39,864 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-04-06 14:19:39,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 9403 treesize of output 8871