/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 21:30:17,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 21:30:17,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 21:30:17,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 21:30:17,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 21:30:17,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 21:30:17,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 21:30:17,258 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-20 21:30:17,265 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 21:30:17,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 21:30:17,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 21:30:17,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 21:30:17,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 21:30:17,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 21:30:17,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 21:30:17,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 21:30:17,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 21:30:17,269 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 21:30:17,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 21:30:17,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 21:30:17,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 21:30:17,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 21:30:17,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 21:30:17,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 21:30:17,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 21:30:17,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 21:30:17,269 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 21:30:17,269 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 21:30:17,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 21:30:17,270 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 21:30:17,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 21:30:17,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 21:30:17,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 21:30:17,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 21:30:17,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 21:30:17,429 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 21:30:17,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-03-20 21:30:17,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d69ccdc1/33f1e1f9a3dc4596b7fe3a8059477e2e/FLAGc904e95c2 [2022-03-20 21:30:17,793 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 21:30:17,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c [2022-03-20 21:30:17,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d69ccdc1/33f1e1f9a3dc4596b7fe3a8059477e2e/FLAGc904e95c2 [2022-03-20 21:30:17,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d69ccdc1/33f1e1f9a3dc4596b7fe3a8059477e2e [2022-03-20 21:30:17,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 21:30:17,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 21:30:17,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 21:30:17,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 21:30:17,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 21:30:17,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:17,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54963eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17, skipping insertion in model container [2022-03-20 21:30:17,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:17,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 21:30:17,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 21:30:17,949 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-03-20 21:30:17,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 21:30:17,969 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 21:30:17,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2022-03-20 21:30:17,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 21:30:17,989 INFO L208 MainTranslator]: Completed translation [2022-03-20 21:30:17,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17 WrapperNode [2022-03-20 21:30:17,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 21:30:17,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 21:30:17,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 21:30:17,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 21:30:17,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:17,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:18,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:18,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:18,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:18,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:18,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:18,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 21:30:18,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 21:30:18,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 21:30:18,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 21:30:18,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17" (1/1) ... [2022-03-20 21:30:18,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 21:30:18,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 21:30:18,044 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) [2022-03-20 21:30:18,055 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 [2022-03-20 21:30:18,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 21:30:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 21:30:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 21:30:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 21:30:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 21:30:18,070 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 21:30:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 21:30:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 21:30:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 21:30:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 21:30:18,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 21:30:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 21:30:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 21:30:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 21:30:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 21:30:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 21:30:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 21:30:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 21:30:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 21:30:18,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 21:30:18,110 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 21:30:18,111 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 21:30:18,204 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 21:30:18,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 21:30:18,209 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 21:30:18,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:30:18 BoogieIcfgContainer [2022-03-20 21:30:18,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 21:30:18,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 21:30:18,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 21:30:18,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 21:30:18,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 09:30:17" (1/3) ... [2022-03-20 21:30:18,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca0cf42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:30:18, skipping insertion in model container [2022-03-20 21:30:18,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:30:17" (2/3) ... [2022-03-20 21:30:18,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca0cf42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:30:18, skipping insertion in model container [2022-03-20 21:30:18,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:30:18" (3/3) ... [2022-03-20 21:30:18,217 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2022-03-20 21:30:18,221 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 21:30:18,221 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 21:30:18,257 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 21:30:18,263 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 [2022-03-20 21:30:18,264 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 21:30:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-20 21:30:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 21:30:18,282 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:18,282 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:18,283 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times [2022-03-20 21:30:18,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:18,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1413173566] [2022-03-20 21:30:18,315 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:18,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 2 times [2022-03-20 21:30:18,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:18,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037640943] [2022-03-20 21:30:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:18,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 21:30:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 21:30:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 21:30:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 21:30:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 21:30:18,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:18,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037640943] [2022-03-20 21:30:18,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037640943] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:18,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:18,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 21:30:18,505 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1413173566] [2022-03-20 21:30:18,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1413173566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:18,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:18,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 21:30:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713135685] [2022-03-20 21:30:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:18,511 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 21:30:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:18,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 21:30:18,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 21:30:18,534 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 21:30:18,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:18,613 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2022-03-20 21:30:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 21:30:18,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-03-20 21:30:18,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:18,619 INFO L225 Difference]: With dead ends: 69 [2022-03-20 21:30:18,619 INFO L226 Difference]: Without dead ends: 33 [2022-03-20 21:30:18,622 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 21:30:18,624 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:18,625 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 21:30:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-20 21:30:18,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-20 21:30:18,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 21:30:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-03-20 21:30:18,650 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2022-03-20 21:30:18,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:18,651 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-03-20 21:30:18,651 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 21:30:18,651 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-03-20 21:30:18,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 21:30:18,652 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:18,652 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:18,653 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 21:30:18,653 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:18,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:18,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times [2022-03-20 21:30:18,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:18,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [926077401] [2022-03-20 21:30:18,654 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:18,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 2 times [2022-03-20 21:30:18,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:18,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093211137] [2022-03-20 21:30:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 21:30:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 21:30:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 21:30:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 21:30:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 21:30:18,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:18,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093211137] [2022-03-20 21:30:18,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093211137] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:18,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:18,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 21:30:18,738 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:18,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [926077401] [2022-03-20 21:30:18,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [926077401] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:18,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:18,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 21:30:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020858976] [2022-03-20 21:30:18,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:18,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 21:30:18,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 21:30:18,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 21:30:18,741 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 21:30:18,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:18,875 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-03-20 21:30:18,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 21:30:18,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-03-20 21:30:18,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:18,876 INFO L225 Difference]: With dead ends: 46 [2022-03-20 21:30:18,876 INFO L226 Difference]: Without dead ends: 44 [2022-03-20 21:30:18,877 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 21:30:18,878 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:18,878 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 48 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 21:30:18,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-20 21:30:18,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-20 21:30:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 21:30:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-03-20 21:30:18,887 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2022-03-20 21:30:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:18,887 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-03-20 21:30:18,887 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 21:30:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-03-20 21:30:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 21:30:18,888 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:18,888 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:18,889 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 21:30:18,889 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:18,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:18,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times [2022-03-20 21:30:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:18,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [689144208] [2022-03-20 21:30:18,890 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:18,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 2 times [2022-03-20 21:30:18,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:18,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169851909] [2022-03-20 21:30:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:18,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 21:30:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 21:30:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 21:30:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 21:30:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 21:30:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 21:30:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 21:30:18,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:18,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169851909] [2022-03-20 21:30:18,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169851909] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:18,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:18,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 21:30:18,988 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:18,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [689144208] [2022-03-20 21:30:18,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [689144208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:18,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:18,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 21:30:18,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658874166] [2022-03-20 21:30:18,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:18,989 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 21:30:18,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:18,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 21:30:18,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 21:30:18,990 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 21:30:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:19,151 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-03-20 21:30:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 21:30:19,151 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-20 21:30:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:19,154 INFO L225 Difference]: With dead ends: 50 [2022-03-20 21:30:19,154 INFO L226 Difference]: Without dead ends: 48 [2022-03-20 21:30:19,155 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 21:30:19,157 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:19,160 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 21:30:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-20 21:30:19,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-03-20 21:30:19,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 21:30:19,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-03-20 21:30:19,181 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2022-03-20 21:30:19,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:19,182 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-03-20 21:30:19,182 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 21:30:19,182 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-03-20 21:30:19,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 21:30:19,183 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:19,183 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:19,183 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 21:30:19,183 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:19,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:19,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times [2022-03-20 21:30:19,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:19,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [594895566] [2022-03-20 21:30:19,184 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 2 times [2022-03-20 21:30:19,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:19,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973787759] [2022-03-20 21:30:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:19,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:19,205 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 21:30:19,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513059866] [2022-03-20 21:30:19,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 21:30:19,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:19,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 21:30:19,207 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) [2022-03-20 21:30:19,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 21:30:19,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 21:30:19,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 21:30:19,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-20 21:30:19,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 21:30:19,534 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-20 21:30:19,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 21:30:19,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:19,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973787759] [2022-03-20 21:30:19,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 21:30:19,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513059866] [2022-03-20 21:30:19,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513059866] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:19,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:19,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 21:30:19,535 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:19,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [594895566] [2022-03-20 21:30:19,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [594895566] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:19,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:19,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 21:30:19,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987525724] [2022-03-20 21:30:19,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:19,536 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 21:30:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 21:30:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-03-20 21:30:19,537 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-20 21:30:19,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:19,643 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-03-20 21:30:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 21:30:19,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2022-03-20 21:30:19,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:19,645 INFO L225 Difference]: With dead ends: 69 [2022-03-20 21:30:19,645 INFO L226 Difference]: Without dead ends: 55 [2022-03-20 21:30:19,646 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-20 21:30:19,652 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:19,652 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 225 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 21:30:19,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-20 21:30:19,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-03-20 21:30:19,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-20 21:30:19,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-03-20 21:30:19,669 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2022-03-20 21:30:19,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:19,669 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-03-20 21:30:19,670 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-03-20 21:30:19,670 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-03-20 21:30:19,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 21:30:19,671 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:19,671 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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, 1] [2022-03-20 21:30:19,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 21:30:19,887 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:19,887 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 1 times [2022-03-20 21:30:19,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:19,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [997927484] [2022-03-20 21:30:19,889 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 2 times [2022-03-20 21:30:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:19,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434409392] [2022-03-20 21:30:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:19,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 21:30:19,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472361974] [2022-03-20 21:30:19,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 21:30:19,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:19,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 21:30:19,904 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) [2022-03-20 21:30:19,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 21:30:19,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 21:30:19,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 21:30:19,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 21:30:19,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 21:30:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-20 21:30:20,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 21:30:20,391 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-20 21:30:20,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:20,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434409392] [2022-03-20 21:30:20,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 21:30:20,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472361974] [2022-03-20 21:30:20,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472361974] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 21:30:20,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 21:30:20,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-03-20 21:30:20,392 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:20,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [997927484] [2022-03-20 21:30:20,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [997927484] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:20,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:20,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 21:30:20,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608402759] [2022-03-20 21:30:20,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:20,394 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 21:30:20,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:20,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 21:30:20,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-03-20 21:30:20,394 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 21:30:20,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:20,496 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2022-03-20 21:30:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 21:30:20,496 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 45 [2022-03-20 21:30:20,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:20,497 INFO L225 Difference]: With dead ends: 65 [2022-03-20 21:30:20,497 INFO L226 Difference]: Without dead ends: 54 [2022-03-20 21:30:20,497 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-03-20 21:30:20,497 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 24 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:20,498 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 195 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 21:30:20,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-03-20 21:30:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-03-20 21:30:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-20 21:30:20,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-03-20 21:30:20,505 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 45 [2022-03-20 21:30:20,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:20,505 INFO L478 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-03-20 21:30:20,505 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-03-20 21:30:20,505 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-03-20 21:30:20,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 21:30:20,506 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:20,506 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:20,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 21:30:20,726 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:20,726 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:20,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 1 times [2022-03-20 21:30:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:20,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1121736123] [2022-03-20 21:30:20,727 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 2 times [2022-03-20 21:30:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:20,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464935061] [2022-03-20 21:30:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:20,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 21:30:20,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1612397953] [2022-03-20 21:30:20,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 21:30:20,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:20,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 21:30:20,736 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) [2022-03-20 21:30:20,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 21:30:20,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 21:30:20,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 21:30:20,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-20 21:30:20,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 21:30:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-20 21:30:21,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 21:30:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-20 21:30:21,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:21,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464935061] [2022-03-20 21:30:21,143 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 21:30:21,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612397953] [2022-03-20 21:30:21,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612397953] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 21:30:21,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 21:30:21,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-03-20 21:30:21,143 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:21,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1121736123] [2022-03-20 21:30:21,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1121736123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:21,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:21,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 21:30:21,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92847807] [2022-03-20 21:30:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:21,144 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 21:30:21,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:21,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 21:30:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-20 21:30:21,144 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 21:30:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:21,189 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2022-03-20 21:30:21,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 21:30:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2022-03-20 21:30:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:21,191 INFO L225 Difference]: With dead ends: 66 [2022-03-20 21:30:21,191 INFO L226 Difference]: Without dead ends: 64 [2022-03-20 21:30:21,191 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-20 21:30:21,192 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:21,193 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 141 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 21:30:21,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-20 21:30:21,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-03-20 21:30:21,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 37 states have internal predecessors, (39), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-20 21:30:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-03-20 21:30:21,212 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 55 [2022-03-20 21:30:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:21,213 INFO L478 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-03-20 21:30:21,213 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 21:30:21,213 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-03-20 21:30:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-03-20 21:30:21,216 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:21,216 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:21,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 21:30:21,432 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:21,432 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 1 times [2022-03-20 21:30:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:21,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1503266336] [2022-03-20 21:30:21,433 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:21,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1784683007, now seen corresponding path program 2 times [2022-03-20 21:30:21,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:21,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928704459] [2022-03-20 21:30:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:21,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:21,441 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 21:30:21,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14452122] [2022-03-20 21:30:21,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 21:30:21,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:21,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 21:30:21,442 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) [2022-03-20 21:30:21,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 21:30:21,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 21:30:21,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 21:30:21,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-20 21:30:21,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 21:30:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-03-20 21:30:21,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 21:30:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-03-20 21:30:22,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:22,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928704459] [2022-03-20 21:30:22,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 21:30:22,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14452122] [2022-03-20 21:30:22,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14452122] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 21:30:22,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 21:30:22,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2022-03-20 21:30:22,001 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:22,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1503266336] [2022-03-20 21:30:22,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1503266336] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:22,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:22,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-20 21:30:22,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201336983] [2022-03-20 21:30:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:22,003 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-20 21:30:22,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:22,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-20 21:30:22,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-03-20 21:30:22,003 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-03-20 21:30:22,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:22,166 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2022-03-20 21:30:22,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-20 21:30:22,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 62 [2022-03-20 21:30:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:22,170 INFO L225 Difference]: With dead ends: 90 [2022-03-20 21:30:22,170 INFO L226 Difference]: Without dead ends: 88 [2022-03-20 21:30:22,171 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-03-20 21:30:22,171 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 28 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:22,171 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 204 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 21:30:22,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-03-20 21:30:22,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-03-20 21:30:22,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 50 states have (on average 1.14) internal successors, (57), 54 states have internal predecessors, (57), 25 states have call successors, (25), 12 states have call predecessors, (25), 11 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2022-03-20 21:30:22,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2022-03-20 21:30:22,186 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 62 [2022-03-20 21:30:22,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:22,186 INFO L478 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-03-20 21:30:22,187 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-03-20 21:30:22,187 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2022-03-20 21:30:22,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 21:30:22,189 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:22,189 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:22,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-20 21:30:22,403 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:22,403 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 1 times [2022-03-20 21:30:22,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:22,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1658481893] [2022-03-20 21:30:22,404 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 2 times [2022-03-20 21:30:22,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:22,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041052952] [2022-03-20 21:30:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:22,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:22,412 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 21:30:22,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341958291] [2022-03-20 21:30:22,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 21:30:22,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:22,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 21:30:22,413 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) [2022-03-20 21:30:22,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 21:30:22,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 21:30:22,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 21:30:22,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-20 21:30:22,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 21:30:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-03-20 21:30:23,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 21:30:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-03-20 21:30:25,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:25,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041052952] [2022-03-20 21:30:25,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 21:30:25,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341958291] [2022-03-20 21:30:25,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341958291] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 21:30:25,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 21:30:25,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2022-03-20 21:30:25,836 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:25,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1658481893] [2022-03-20 21:30:25,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1658481893] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:25,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:25,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 21:30:25,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465625726] [2022-03-20 21:30:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:25,836 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 21:30:25,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:25,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 21:30:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-03-20 21:30:25,837 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-20 21:30:26,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:26,340 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2022-03-20 21:30:26,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 21:30:26,341 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2022-03-20 21:30:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:26,342 INFO L225 Difference]: With dead ends: 121 [2022-03-20 21:30:26,342 INFO L226 Difference]: Without dead ends: 98 [2022-03-20 21:30:26,342 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-03-20 21:30:26,343 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:26,343 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 351 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 21:30:26,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-20 21:30:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2022-03-20 21:30:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 60 states have internal predecessors, (65), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-03-20 21:30:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-03-20 21:30:26,369 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 75 [2022-03-20 21:30:26,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:26,370 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-03-20 21:30:26,370 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-03-20 21:30:26,370 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-03-20 21:30:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-03-20 21:30:26,370 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:26,370 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:26,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 21:30:26,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:26,571 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:26,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 3 times [2022-03-20 21:30:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:26,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [778581310] [2022-03-20 21:30:26,573 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:26,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1211630783, now seen corresponding path program 4 times [2022-03-20 21:30:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:26,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459008415] [2022-03-20 21:30:26,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:26,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:26,580 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 21:30:26,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062278123] [2022-03-20 21:30:26,580 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 21:30:26,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:26,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 21:30:26,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 21:30:26,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 21:30:26,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 21:30:26,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 21:30:26,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 21:30:26,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 21:30:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-03-20 21:30:26,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 21:30:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-03-20 21:30:27,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:27,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459008415] [2022-03-20 21:30:27,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 21:30:27,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062278123] [2022-03-20 21:30:27,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062278123] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 21:30:27,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 21:30:27,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-03-20 21:30:27,138 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:27,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [778581310] [2022-03-20 21:30:27,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [778581310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:27,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:27,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 21:30:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507266333] [2022-03-20 21:30:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:27,139 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 21:30:27,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 21:30:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-20 21:30:27,140 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-20 21:30:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:27,398 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2022-03-20 21:30:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 21:30:27,399 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 79 [2022-03-20 21:30:27,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:27,399 INFO L225 Difference]: With dead ends: 113 [2022-03-20 21:30:27,399 INFO L226 Difference]: Without dead ends: 76 [2022-03-20 21:30:27,400 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-03-20 21:30:27,400 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 16 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:27,400 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 230 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 21:30:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-20 21:30:27,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-03-20 21:30:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.108695652173913) internal successors, (51), 47 states have internal predecessors, (51), 19 states have call successors, (19), 11 states have call predecessors, (19), 10 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-20 21:30:27,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2022-03-20 21:30:27,409 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 79 [2022-03-20 21:30:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:27,409 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2022-03-20 21:30:27,409 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-03-20 21:30:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2022-03-20 21:30:27,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-03-20 21:30:27,409 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:27,410 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:27,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 21:30:27,623 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:27,624 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:27,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:27,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 3 times [2022-03-20 21:30:27,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:27,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1806978753] [2022-03-20 21:30:27,624 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:27,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 4 times [2022-03-20 21:30:27,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:27,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217737671] [2022-03-20 21:30:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:27,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:27,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 21:30:27,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178297582] [2022-03-20 21:30:27,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 21:30:27,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:27,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 21:30:27,635 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 21:30:27,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 21:30:27,673 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 21:30:27,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 21:30:27,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-20 21:30:27,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 21:30:27,976 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-03-20 21:30:27,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 21:30:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-03-20 21:30:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:30,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217737671] [2022-03-20 21:30:30,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 21:30:30,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178297582] [2022-03-20 21:30:30,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178297582] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 21:30:30,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 21:30:30,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2022-03-20 21:30:30,185 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:30,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1806978753] [2022-03-20 21:30:30,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1806978753] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:30,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:30,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 21:30:30,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110647453] [2022-03-20 21:30:30,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:30,185 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 21:30:30,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:30,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 21:30:30,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-03-20 21:30:30,186 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-20 21:30:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:30,337 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2022-03-20 21:30:30,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 21:30:30,338 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-03-20 21:30:30,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:30,338 INFO L225 Difference]: With dead ends: 96 [2022-03-20 21:30:30,338 INFO L226 Difference]: Without dead ends: 71 [2022-03-20 21:30:30,339 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-03-20 21:30:30,339 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 16 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:30,339 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 297 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 21:30:30,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-20 21:30:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-20 21:30:30,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.0) internal successors, (44), 44 states have internal predecessors, (44), 16 states have call successors, (16), 12 states have call predecessors, (16), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-03-20 21:30:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2022-03-20 21:30:30,356 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 80 [2022-03-20 21:30:30,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:30,356 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2022-03-20 21:30:30,356 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-20 21:30:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2022-03-20 21:30:30,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-20 21:30:30,357 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 21:30:30,357 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 21:30:30,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 21:30:30,571 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:30,572 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 21:30:30,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 21:30:30,572 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 1 times [2022-03-20 21:30:30,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:30,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1569619714] [2022-03-20 21:30:30,572 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 21:30:30,573 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 2 times [2022-03-20 21:30:30,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 21:30:30,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232346665] [2022-03-20 21:30:30,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 21:30:30,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 21:30:30,591 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 21:30:30,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633593769] [2022-03-20 21:30:30,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 21:30:30,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 21:30:30,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 21:30:30,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-20 21:30:30,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 21:30:30,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 21:30:30,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 21:30:30,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-20 21:30:30,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 21:30:33,131 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-03-20 21:30:33,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 21:30:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-03-20 21:30:36,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 21:30:36,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232346665] [2022-03-20 21:30:36,288 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 21:30:36,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633593769] [2022-03-20 21:30:36,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633593769] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 21:30:36,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 21:30:36,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2022-03-20 21:30:36,288 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 21:30:36,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1569619714] [2022-03-20 21:30:36,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1569619714] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 21:30:36,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 21:30:36,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-20 21:30:36,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465241355] [2022-03-20 21:30:36,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 21:30:36,289 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 21:30:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 21:30:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 21:30:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-03-20 21:30:36,290 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-03-20 21:30:36,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 21:30:36,696 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2022-03-20 21:30:36,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 21:30:36,696 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 86 [2022-03-20 21:30:36,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 21:30:36,696 INFO L225 Difference]: With dead ends: 71 [2022-03-20 21:30:36,696 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 21:30:36,697 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-03-20 21:30:36,697 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 21:30:36,698 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 275 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 118 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2022-03-20 21:30:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 21:30:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 21:30:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 21:30:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 21:30:36,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 86 [2022-03-20 21:30:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 21:30:36,698 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 21:30:36,699 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-03-20 21:30:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 21:30:36,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 21:30:36,701 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 21:30:36,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 21:30:36,904 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-20 21:30:36,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 21:30:40,227 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-03-20 21:30:40,227 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-03-20 21:30:40,227 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-03-20 21:30:40,227 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-03-20 21:30:40,227 INFO L878 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-03-20 21:30:40,227 INFO L878 garLoopResultBuilder]: At program point L12-2(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-20 21:30:40,227 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-20 21:30:40,227 INFO L878 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (<= (mod main_~A~0 4294967296) 1) (<= .cse0 1) (<= 1 .cse0))) [2022-03-20 21:30:40,227 INFO L878 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (= main_~d~0 .cse0) (<= .cse0 1) (<= 1 .cse0) (= main_~p~0 1))) [2022-03-20 21:30:40,227 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 63) the Hoare annotation is: true [2022-03-20 21:30:40,228 INFO L878 garLoopResultBuilder]: At program point L54(lines 54 57) the Hoare annotation is: (let ((.cse6 (mod main_~B~0 4294967296))) (and (= (mod main_~A~0 4294967296) main_~r~0) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse5 (div (+ (- 1) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse0 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse1 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse2 (* (- 2) .cse5)) (.cse4 (+ .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296))) (and (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse0 .cse1 2 (* main_~d~0 2) .cse2) 8589934592) 1)) (<= aux_div_v_main_~d~0_41_36 main_~r~0) (<= .cse3 .cse4) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse0 .cse1 (* aux_div_v_main_~d~0_41_36 2) 1 .cse2) 8589934592) 1)) (<= (+ .cse3 main_~d~0) (+ (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) .cse5 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247) (<= .cse4 (+ .cse3 1)))))) (< main_~r~0 (+ (* main_~d~0 2) 1)) (<= 1 .cse6) (= main_~q~0 0) (<= .cse6 main_~r~0) (= main_~p~0 1))) [2022-03-20 21:30:40,228 INFO L878 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-03-20 21:30:40,228 INFO L878 garLoopResultBuilder]: At program point L48(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod main_~B~0 4294967296))) (let ((.cse9 (<= .cse1 1)) (.cse2 (= main_~q~0 0)) (.cse0 (mod main_~A~0 4294967296)) (.cse10 (= main_~p~0 1))) (or (and (= .cse0 main_~r~0) (< main_~r~0 (* 2 .cse1)) (= main_~p~0 2) .cse2 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse1 main_~d~0)) (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (< 0 .cse1) (= (+ main_~d~0 main_~r~0) .cse0) .cse9 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse10) (and (= main_~d~0 .cse1) (< main_~r~0 .cse1) .cse9 .cse2 (<= .cse0 main_~r~0) .cse10)))) [2022-03-20 21:30:40,228 INFO L878 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296)) (.cse1 (mod main_~A~0 4294967296)) (.cse2 (= main_~p~0 1))) (or (and (= main_~d~0 .cse0) (< main_~r~0 .cse0) (<= .cse0 1) (= main_~q~0 0) (<= .cse1 main_~r~0) .cse2) (and (= .cse1 (+ main_~r~0 .cse0)) (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse4 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse5 (+ .cse4 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse3 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse6 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse7 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse8 (* .cse4 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse3 main_~d~0) (+ .cse4 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse3 .cse5) (<= .cse5 (+ .cse3 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse6 .cse7 (* aux_div_v_main_~d~0_41_36 2) .cse8 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse6 .cse7 2 .cse8 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse1) (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) .cse2))) [2022-03-20 21:30:40,228 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 63) the Hoare annotation is: true [2022-03-20 21:30:40,228 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 21:30:40,228 INFO L878 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 21:30:40,228 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 63) the Hoare annotation is: true [2022-03-20 21:30:40,228 INFO L885 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2022-03-20 21:30:40,228 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-03-20 21:30:40,228 INFO L878 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod main_~A~0 4294967296) 1) (<= (mod main_~B~0 4294967296) 1)) [2022-03-20 21:30:40,228 INFO L885 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-03-20 21:30:40,228 INFO L878 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 1) [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse8 (mod main_~B~0 4294967296))) (let ((.cse7 (<= .cse8 1)) (.cse10 (= main_~q~0 0)) (.cse6 (mod main_~A~0 4294967296)) (.cse9 (= main_~p~0 1))) (or (and (exists ((aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 Int) (aux_div_v_main_~d~0_41_36 Int) (aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 Int)) (let ((.cse1 (div (+ (- 1) (* (- 1) main_~d~0) (* (- 1) main_~r~0)) (- 2)))) (let ((.cse2 (+ .cse1 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse0 (* aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 4294967296)) (.cse3 (* (- 2) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse4 (* 8589934592 aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (.cse5 (* .cse1 (- 2)))) (and (<= aux_div_v_main_~d~0_41_36 (+ main_~d~0 main_~r~0)) (<= (+ .cse0 main_~d~0) (+ .cse1 (* 4294967296 aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103) aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247)) (<= .cse0 .cse2) (<= .cse2 (+ .cse0 1)) (< aux_div_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103 (+ (div (+ .cse3 .cse4 (* aux_div_v_main_~d~0_41_36 2) .cse5 1) 8589934592) 1)) (< aux_div_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247 (+ (div (+ .cse3 .cse4 2 .cse5 (* main_~d~0 2)) 8589934592) 1)) (<= 0 aux_mod_aux_mod_aux_mod_aux_div_aux_mod_aux_mod_v_main_~d~0_41_36_77_99_64_103_247))))) (= (+ main_~d~0 main_~r~0) .cse6) .cse7 (< main_~r~0 (+ main_~d~0 1)) (= main_~q~0 1) (< .cse6 (* 2 .cse8)) .cse9) (and (= .cse6 main_~r~0) (= main_~p~0 2) (<= 1 .cse8) .cse10 (<= (div (* (- 1) main_~d~0) (- 2)) main_~r~0) (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)) (< .cse8 main_~d~0)) (and (= main_~d~0 .cse8) (< main_~r~0 .cse8) .cse7 .cse10 (<= .cse6 main_~r~0) .cse9)))) [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point L39(lines 36 44) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse10 (* (- 1) main_~d~0))) (let ((.cse6 (div .cse10 (- 2))) (.cse7 (mod main_~B~0 4294967296))) (let ((.cse0 (= (mod main_~A~0 4294967296) main_~r~0)) (.cse1 (= main_~d~0 (* main_~p~0 .cse7))) (.cse2 (<= 0 .cse6)) (.cse9 (<= .cse7 1)) (.cse3 (<= 1 .cse7)) (.cse4 (= (mod main_~d~0 2) 0)) (.cse5 (= main_~q~0 0)) (.cse8 (< 0 (+ (div (+ (* (- 1) main_~r~0) 1) 4294967296) 1)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 main_~r~0) (<= .cse7 main_~r~0) .cse8) (and .cse0 .cse1 .cse9 .cse3 .cse5 .cse8 (= main_~p~0 1)) (and (= main_~A~0 (+ main_~r~0 (* (div main_~A~0 4294967296) 4294967296))) (<= (div main_~r~0 (- 2)) (div .cse10 4)) .cse1 .cse2 .cse9 .cse3 .cse4 .cse5 .cse8))))) [2022-03-20 21:30:40,229 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 21:30:40,229 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-20 21:30:40,229 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 21:30:40,229 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 21:30:40,229 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 21:30:40,229 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-03-20 21:30:40,229 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-03-20 21:30:40,229 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (and (or (not (<= 1 |__VERIFIER_assert_#in~cond|)) (<= 1 __VERIFIER_assert_~cond)) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-03-20 21:30:40,230 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 21:30:40,232 INFO L719 BasicCegarLoop]: Path program histogram: [4, 4, 2, 2, 2, 2, 2, 2, 2] [2022-03-20 21:30:40,233 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 21:30:40,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 09:30:40 BoogieIcfgContainer [2022-03-20 21:30:40,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 21:30:40,245 INFO L158 Benchmark]: Toolchain (without parser) took 22432.39ms. Allocated memory was 183.5MB in the beginning and 326.1MB in the end (delta: 142.6MB). Free memory was 129.5MB in the beginning and 133.3MB in the end (delta: -3.8MB). Peak memory consumption was 139.0MB. Max. memory is 8.0GB. [2022-03-20 21:30:40,245 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory was 146.1MB in the beginning and 146.0MB in the end (delta: 74.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 21:30:40,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.26ms. Allocated memory was 183.5MB in the beginning and 265.3MB in the end (delta: 81.8MB). Free memory was 129.3MB in the beginning and 238.7MB in the end (delta: -109.3MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2022-03-20 21:30:40,245 INFO L158 Benchmark]: Boogie Preprocessor took 22.46ms. Allocated memory is still 265.3MB. Free memory was 238.7MB in the beginning and 236.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 21:30:40,245 INFO L158 Benchmark]: RCFGBuilder took 196.89ms. Allocated memory is still 265.3MB. Free memory was 236.6MB in the beginning and 225.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 21:30:40,246 INFO L158 Benchmark]: TraceAbstraction took 22032.10ms. Allocated memory was 265.3MB in the beginning and 326.1MB in the end (delta: 60.8MB). Free memory was 225.0MB in the beginning and 133.3MB in the end (delta: 91.8MB). Peak memory consumption was 153.6MB. Max. memory is 8.0GB. [2022-03-20 21:30:40,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 183.5MB. Free memory was 146.1MB in the beginning and 146.0MB in the end (delta: 74.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 176.26ms. Allocated memory was 183.5MB in the beginning and 265.3MB in the end (delta: 81.8MB). Free memory was 129.3MB in the beginning and 238.7MB in the end (delta: -109.3MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.46ms. Allocated memory is still 265.3MB. Free memory was 238.7MB in the beginning and 236.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 196.89ms. Allocated memory is still 265.3MB. Free memory was 236.6MB in the beginning and 225.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 22032.10ms. Allocated memory was 265.3MB in the beginning and 326.1MB in the end (delta: 60.8MB). Free memory was 225.0MB in the beginning and 133.3MB in the end (delta: 91.8MB). Peak memory consumption was 153.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.0s, OverallIterations: 11, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 245 mSDsluCounter, 2055 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 49 IncrementalHoareTripleChecker+Unchecked, 1631 mSDsCounter, 204 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1303 IncrementalHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 204 mSolverCounterUnsat, 424 mSDtfsCounter, 1303 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1067 GetRequests, 926 SyntacticMatches, 9 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=8, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 342 PreInvPairs, 453 NumberOfFragments, 2155 HoareAnnotationTreeSize, 342 FomulaSimplifications, 447 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 1494 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((((A % 4294967296 == r && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && -1 * d / -2 <= r) && B % 4294967296 <= r) && 0 < (-1 * r + 1) / 4294967296 + 1) || ((((((A % 4294967296 == r && d == p * (B % 4294967296)) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) && p == 1)) || ((((((((A == r + A / 4294967296 * 4294967296 && r / -2 <= -1 * d / 4) && d == p * (B % 4294967296)) && 0 <= -1 * d / -2) && B % 4294967296 <= 1) && 1 <= B % 4294967296) && d % 2 == 0) && q == 0) && 0 < (-1 * r + 1) / 4294967296 + 1) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(1 <= \old(cond)) || 1 <= cond) && (\old(cond) == 0 || !(cond == 0)) RESULT: Ultimate proved your program to be correct! [2022-03-20 21:30:40,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...