/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 01:01:26,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 01:01:26,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 01:01:26,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 01:01:26,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-04-06 01:01:26,224 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 01:01:26,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 01:01:26,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-06 01:01:26,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-06 01:01:26,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 01:01:26,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 01:01:26,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 01:01:26,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 01:01:26,226 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 01:01:26,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 01:01:26,228 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 01:01:26,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 01:01:26,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 01:01:26,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 01:01:26,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 01:01:26,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 01:01:26,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 01:01:26,230 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 01:01:26,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 01:01:26,230 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 01:01:26,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 01:01:26,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 01:01:26,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 01:01:26,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 01:01:26,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 01:01:26,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 01:01:26,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 01:01:26,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 01:01:26,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 01:01:26,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 01:01:26,232 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-06 01:01:26,232 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-06 01:01:26,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 01:01:26,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 01:01:26,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 01:01:26,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 01:01:26,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 01:01:26,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 01:01:26,548 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 01:01:26,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound10.c [2022-04-06 01:01:26,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee95d0d/2b8a842a6815444f9d8aa2aed37cacfe/FLAG5880c1a46 [2022-04-06 01:01:27,032 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 01:01:27,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_valuebound10.c [2022-04-06 01:01:27,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee95d0d/2b8a842a6815444f9d8aa2aed37cacfe/FLAG5880c1a46 [2022-04-06 01:01:27,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee95d0d/2b8a842a6815444f9d8aa2aed37cacfe [2022-04-06 01:01:27,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 01:01:27,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 01:01:27,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 01:01:27,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 01:01:27,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 01:01:27,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462304e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27, skipping insertion in model container [2022-04-06 01:01:27,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 01:01:27,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 01:01:27,289 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/bresenham-ll_valuebound10.c[597,610] [2022-04-06 01:01:27,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 01:01:27,331 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 01:01:27,346 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/bresenham-ll_valuebound10.c[597,610] [2022-04-06 01:01:27,368 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 01:01:27,378 INFO L208 MainTranslator]: Completed translation [2022-04-06 01:01:27,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27 WrapperNode [2022-04-06 01:01:27,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 01:01:27,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 01:01:27,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 01:01:27,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 01:01:27,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 01:01:27,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 01:01:27,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 01:01:27,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 01:01:27,424 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27" (1/1) ... [2022-04-06 01:01:27,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 01:01:27,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:01:27,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 01:01:27,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 01:01:27,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 01:01:27,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 01:01:27,504 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 01:01:27,505 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 01:01:27,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 01:01:27,506 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 01:01:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 01:01:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 01:01:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 01:01:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 01:01:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 01:01:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 01:01:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 01:01:27,506 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 01:01:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 01:01:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 01:01:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 01:01:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 01:01:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 01:01:27,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 01:01:27,568 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 01:01:27,569 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 01:01:27,728 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 01:01:27,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 01:01:27,733 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 01:01:27,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:01:27 BoogieIcfgContainer [2022-04-06 01:01:27,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 01:01:27,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 01:01:27,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 01:01:27,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 01:01:27,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 01:01:27" (1/3) ... [2022-04-06 01:01:27,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133b7436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:01:27, skipping insertion in model container [2022-04-06 01:01:27,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 01:01:27" (2/3) ... [2022-04-06 01:01:27,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133b7436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 01:01:27, skipping insertion in model container [2022-04-06 01:01:27,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 01:01:27" (3/3) ... [2022-04-06 01:01:27,764 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound10.c [2022-04-06 01:01:27,769 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 01:01:27,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 01:01:27,810 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 01:01:27,816 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 01:01:27,816 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 01:01:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 01:01:27,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 01:01:27,838 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:01:27,838 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:01:27,839 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:01:27,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:01:27,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1867489771, now seen corresponding path program 1 times [2022-04-06 01:01:27,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:01:27,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338544907] [2022-04-06 01:01:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:01:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:01:28,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 01:01:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:01:28,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 01:01:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:01:28,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 01:01:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:01:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 01:01:28,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:01:28,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338544907] [2022-04-06 01:01:28,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338544907] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 01:01:28,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 01:01:28,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 01:01:28,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357476372] [2022-04-06 01:01:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 01:01:28,094 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 01:01:28,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:01:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 01:01:28,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 01:01:28,119 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 01:01:28,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:01:28,183 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-04-06 01:01:28,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 01:01:28,185 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-06 01:01:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:01:28,190 INFO L225 Difference]: With dead ends: 57 [2022-04-06 01:01:28,191 INFO L226 Difference]: Without dead ends: 27 [2022-04-06 01:01:28,194 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 01:01:28,197 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 01:01:28,198 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 34 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 01:01:28,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-06 01:01:28,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-04-06 01:01:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-06 01:01:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-04-06 01:01:28,230 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 23 [2022-04-06 01:01:28,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:01:28,231 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-04-06 01:01:28,231 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-06 01:01:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-04-06 01:01:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-06 01:01:28,232 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:01:28,233 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:01:28,233 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 01:01:28,233 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:01:28,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:01:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1827672217, now seen corresponding path program 1 times [2022-04-06 01:01:28,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:01:28,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723958986] [2022-04-06 01:01:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:28,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:01:28,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:01:28,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27651888] [2022-04-06 01:01:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:28,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:28,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:01:28,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:01:28,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 01:01:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:01:28,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 01:01:28,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:01:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 01:01:28,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 01:01:28,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:01:28,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723958986] [2022-04-06 01:01:28,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:01:28,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27651888] [2022-04-06 01:01:28,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27651888] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 01:01:28,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 01:01:28,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 01:01:28,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432986304] [2022-04-06 01:01:28,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 01:01:28,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 01:01:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:01:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 01:01:28,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 01:01:28,552 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 01:01:28,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:01:28,669 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-04-06 01:01:28,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 01:01:28,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-06 01:01:28,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:01:28,672 INFO L225 Difference]: With dead ends: 39 [2022-04-06 01:01:28,672 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 01:01:28,672 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 01:01:28,674 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 01:01:28,674 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 01:01:28,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 01:01:28,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-04-06 01:01:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-06 01:01:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-04-06 01:01:28,683 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 23 [2022-04-06 01:01:28,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:01:28,684 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-04-06 01:01:28,684 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-06 01:01:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-04-06 01:01:28,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-04-06 01:01:28,685 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:01:28,685 INFO L499 BasicCegarLoop]: trace histogram [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] [2022-04-06 01:01:28,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 01:01:28,910 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:28,910 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:01:28,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:01:28,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1419291471, now seen corresponding path program 1 times [2022-04-06 01:01:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:01:28,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904122055] [2022-04-06 01:01:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:28,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:01:28,925 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:01:28,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574894572] [2022-04-06 01:01:28,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:28,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:28,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:01:28,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:01:28,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 01:01:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:01:28,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 01:01:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:01:29,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-06 01:01:29,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:01:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 01:01:29,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:01:29,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904122055] [2022-04-06 01:01:29,337 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:01:29,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574894572] [2022-04-06 01:01:29,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574894572] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:01:29,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:01:29,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2022-04-06 01:01:29,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927185089] [2022-04-06 01:01:29,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:01:29,342 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 01:01:29,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:01:29,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 01:01:29,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-06 01:01:29,345 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 01:01:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:01:29,667 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2022-04-06 01:01:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 01:01:29,668 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2022-04-06 01:01:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:01:29,669 INFO L225 Difference]: With dead ends: 48 [2022-04-06 01:01:29,669 INFO L226 Difference]: Without dead ends: 42 [2022-04-06 01:01:29,669 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-04-06 01:01:29,670 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 01:01:29,671 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 123 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 01:01:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-06 01:01:29,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-04-06 01:01:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 01:01:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-04-06 01:01:29,679 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 32 [2022-04-06 01:01:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:01:29,679 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-04-06 01:01:29,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-04-06 01:01:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-04-06 01:01:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 01:01:29,682 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:01:29,682 INFO L499 BasicCegarLoop]: trace histogram [3, 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] [2022-04-06 01:01:29,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-06 01:01:29,893 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 01:01:29,894 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:01:29,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:01:29,895 INFO L85 PathProgramCache]: Analyzing trace with hash 125050924, now seen corresponding path program 1 times [2022-04-06 01:01:29,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:01:29,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397916416] [2022-04-06 01:01:29,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:01:29,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:01:29,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430822672] [2022-04-06 01:01:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:29,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:29,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:01:29,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:01:29,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 01:01:29,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:01:29,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-06 01:01:29,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:01:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 01:01:30,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:01:30,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-06 01:01:30,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:01:30,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397916416] [2022-04-06 01:01:30,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:01:30,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430822672] [2022-04-06 01:01:30,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430822672] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:01:30,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:01:30,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-04-06 01:01:30,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968472516] [2022-04-06 01:01:30,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:01:30,906 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-04-06 01:01:30,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:01:30,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-04-06 01:01:30,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-04-06 01:01:30,908 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 01:01:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:01:31,546 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-04-06 01:01:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-04-06 01:01:31,548 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 39 [2022-04-06 01:01:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:01:31,549 INFO L225 Difference]: With dead ends: 60 [2022-04-06 01:01:31,549 INFO L226 Difference]: Without dead ends: 52 [2022-04-06 01:01:31,550 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 01:01:31,551 INFO L913 BasicCegarLoop]: 20 mSDtfsCounter, 30 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 01:01:31,552 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 233 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 315 Invalid, 0 Unknown, 72 Unchecked, 0.2s Time] [2022-04-06 01:01:31,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-06 01:01:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2022-04-06 01:01:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-06 01:01:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-04-06 01:01:31,565 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 39 [2022-04-06 01:01:31,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:01:31,565 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-04-06 01:01:31,566 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 19 states have internal predecessors, (34), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 01:01:31,566 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-04-06 01:01:31,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 01:01:31,567 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:01:31,567 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2022-04-06 01:01:31,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 01:01:31,786 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:31,786 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:01:31,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:01:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1662296326, now seen corresponding path program 1 times [2022-04-06 01:01:31,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:01:31,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510856003] [2022-04-06 01:01:31,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:31,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:01:31,803 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:01:31,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344899681] [2022-04-06 01:01:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:31,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:31,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:01:31,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:01:31,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 01:01:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:01:31,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 01:01:31,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:01:31,995 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:01:31,998 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:01:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-04-06 01:01:36,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:01:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-04-06 01:01:36,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:01:36,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510856003] [2022-04-06 01:01:36,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:01:36,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344899681] [2022-04-06 01:01:36,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344899681] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:01:36,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:01:36,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-04-06 01:01:36,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426951559] [2022-04-06 01:01:36,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:01:36,610 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 01:01:36,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:01:36,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 01:01:36,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=146, Unknown=1, NotChecked=0, Total=182 [2022-04-06 01:01:36,612 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 01:01:38,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:01:42,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:01:44,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:01:46,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:01:48,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:01:50,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 01:01:52,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:01:52,991 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2022-04-06 01:01:52,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 01:01:52,992 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 48 [2022-04-06 01:01:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:01:52,993 INFO L225 Difference]: With dead ends: 56 [2022-04-06 01:01:52,993 INFO L226 Difference]: Without dead ends: 50 [2022-04-06 01:01:52,994 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=66, Invalid=237, Unknown=3, NotChecked=0, Total=306 [2022-04-06 01:01:52,994 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 28 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 19 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-04-06 01:01:52,995 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 121 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 124 Invalid, 6 Unknown, 0 Unchecked, 12.2s Time] [2022-04-06 01:01:52,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-04-06 01:01:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2022-04-06 01:01:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 9 states have call successors, (9), 6 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-04-06 01:01:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2022-04-06 01:01:53,004 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 48 [2022-04-06 01:01:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:01:53,004 INFO L478 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2022-04-06 01:01:53,005 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.9) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-04-06 01:01:53,005 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2022-04-06 01:01:53,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-04-06 01:01:53,006 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:01:53,006 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:01:53,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 01:01:53,206 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:53,207 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:01:53,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:01:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash -143142008, now seen corresponding path program 1 times [2022-04-06 01:01:53,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:01:53,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933517838] [2022-04-06 01:01:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:53,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:01:53,218 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:01:53,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462854211] [2022-04-06 01:01:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:53,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:01:53,224 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 01:01:53,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 01:01:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 01:01:53,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 01:01:53,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:01:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-06 01:01:53,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:01:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-04-06 01:01:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:01:53,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933517838] [2022-04-06 01:01:53,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:01:53,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462854211] [2022-04-06 01:01:53,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462854211] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:01:53,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:01:53,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-04-06 01:01:53,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408785835] [2022-04-06 01:01:53,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:01:53,707 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 01:01:53,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:01:53,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 01:01:53,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-04-06 01:01:53,709 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 8 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-04-06 01:01:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:01:53,902 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2022-04-06 01:01:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 01:01:53,902 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 8 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 48 [2022-04-06 01:01:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:01:53,903 INFO L225 Difference]: With dead ends: 65 [2022-04-06 01:01:53,903 INFO L226 Difference]: Without dead ends: 59 [2022-04-06 01:01:53,904 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-04-06 01:01:53,904 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 01:01:53,905 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 154 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 01:01:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-04-06 01:01:53,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2022-04-06 01:01:53,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 36 states have internal predecessors, (41), 10 states have call successors, (10), 6 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-04-06 01:01:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2022-04-06 01:01:53,915 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 48 [2022-04-06 01:01:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:01:53,916 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2022-04-06 01:01:53,916 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 8 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-04-06 01:01:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2022-04-06 01:01:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 01:01:53,917 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:01:53,918 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:01:53,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 01:01:54,118 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:54,119 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:01:54,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:01:54,119 INFO L85 PathProgramCache]: Analyzing trace with hash 55892592, now seen corresponding path program 2 times [2022-04-06 01:01:54,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:01:54,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292607792] [2022-04-06 01:01:54,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:54,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:01:54,129 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:01:54,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584287834] [2022-04-06 01:01:54,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 01:01:54,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:54,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:01:54,131 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) [2022-04-06 01:01:54,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 01:01:54,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 01:01:54,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 01:01:54,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 01:01:54,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:01:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 01:01:54,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:01:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 01:01:54,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:01:54,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292607792] [2022-04-06 01:01:54,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:01:54,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584287834] [2022-04-06 01:01:54,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584287834] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:01:54,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:01:54,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-04-06 01:01:54,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53751867] [2022-04-06 01:01:54,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:01:54,652 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-06 01:01:54,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:01:54,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-06 01:01:54,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-04-06 01:01:54,653 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-04-06 01:01:54,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:01:54,916 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2022-04-06 01:01:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 01:01:54,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 57 [2022-04-06 01:01:54,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:01:54,918 INFO L225 Difference]: With dead ends: 78 [2022-04-06 01:01:54,918 INFO L226 Difference]: Without dead ends: 72 [2022-04-06 01:01:54,919 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-04-06 01:01:54,920 INFO L913 BasicCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 01:01:54,920 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 230 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 01:01:54,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-04-06 01:01:54,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2022-04-06 01:01:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 11 states have call successors, (11), 6 states have call predecessors, (11), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-04-06 01:01:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2022-04-06 01:01:54,942 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 57 [2022-04-06 01:01:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:01:54,944 INFO L478 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2022-04-06 01:01:54,945 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 10 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-04-06 01:01:54,945 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2022-04-06 01:01:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-04-06 01:01:54,948 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 01:01:54,948 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 01:01:54,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 01:01:55,159 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:55,160 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 01:01:55,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 01:01:55,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2136090540, now seen corresponding path program 3 times [2022-04-06 01:01:55,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 01:01:55,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291538410] [2022-04-06 01:01:55,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 01:01:55,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 01:01:55,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 01:01:55,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859719100] [2022-04-06 01:01:55,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 01:01:55,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:01:55,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 01:01:55,179 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) [2022-04-06 01:01:55,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 01:01:55,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-04-06 01:01:55,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 01:01:55,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 31 conjunts are in the unsatisfiable core [2022-04-06 01:01:55,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 01:01:56,806 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:01:56,811 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:01:56,813 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:01:59,974 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-04-06 01:01:59,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 01:02:00,631 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:02:02,867 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 01:02:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-04-06 01:02:13,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 01:02:13,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291538410] [2022-04-06 01:02:13,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 01:02:13,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859719100] [2022-04-06 01:02:13,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859719100] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 01:02:13,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 01:02:13,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-04-06 01:02:13,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786393583] [2022-04-06 01:02:13,733 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 01:02:13,733 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-04-06 01:02:13,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 01:02:13,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-04-06 01:02:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-04-06 01:02:13,735 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-06 01:02:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 01:02:27,333 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-04-06 01:02:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 01:02:27,333 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2022-04-06 01:02:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 01:02:27,334 INFO L225 Difference]: With dead ends: 62 [2022-04-06 01:02:27,334 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 01:02:27,336 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=236, Invalid=1096, Unknown=0, NotChecked=0, Total=1332 [2022-04-06 01:02:27,336 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 25 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-04-06 01:02:27,337 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 293 Invalid, 0 Unknown, 59 Unchecked, 4.2s Time] [2022-04-06 01:02:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 01:02:27,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 01:02:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 01:02:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 01:02:27,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2022-04-06 01:02:27,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 01:02:27,338 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 01:02:27,338 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 7 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-04-06 01:02:27,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 01:02:27,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 01:02:27,341 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 01:02:27,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-04-06 01:02:27,542 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 01:02:27,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 01:03:03,003 WARN L232 SmtUtils]: Spent 35.40s on a formula simplification. DAG size of input: 114 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 01:03:09,633 WARN L232 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 134 DAG size of output: 45 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 01:03:09,955 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2022-04-06 01:03:09,955 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 7) no Hoare annotation was computed. [2022-04-06 01:03:09,955 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2022-04-06 01:03:09,956 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2022-04-06 01:03:09,956 INFO L882 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-04-06 01:03:09,956 INFO L882 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2022-04-06 01:03:09,956 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2022-04-06 01:03:09,956 INFO L878 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~X~0 10) (<= 0 main_~X~0)) [2022-04-06 01:03:09,956 INFO L882 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-04-06 01:03:09,956 INFO L885 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-04-06 01:03:09,956 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 21 53) no Hoare annotation was computed. [2022-04-06 01:03:09,956 INFO L882 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-04-06 01:03:09,956 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse2 (* main_~y~0 2)) (.cse0 (* main_~Y~0 2)) (.cse1 (* 2 (* main_~Y~0 main_~x~0)))) (and (= (+ .cse0 .cse1) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (= (+ .cse2 .cse0 (* 2 main_~yx~0)) (+ (* 2 main_~xy~0) main_~X~0 main_~v~0)) (= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ .cse2 .cse0 .cse1)))) [2022-04-06 01:03:09,956 INFO L882 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-04-06 01:03:09,956 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 21 53) no Hoare annotation was computed. [2022-04-06 01:03:09,957 INFO L882 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2022-04-06 01:03:09,957 INFO L882 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2022-04-06 01:03:09,957 INFO L878 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse4 (* main_~Y~0 main_~x~0))) (let ((.cse0 (* main_~Y~0 2)) (.cse1 (* 2 .cse4))) (and (<= main_~X~0 10) (= (+ .cse0 .cse1) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (<= 0 main_~Y~0) (<= 0 main_~X~0) (or (<= main_~x~0 main_~X~0) (and (let ((.cse3 (+ (div (+ main_~X~0 main_~v~0) (- 2)) main_~Y~0 .cse4))) (or (let ((.cse2 (div .cse3 main_~X~0))) (= (+ main_~X~0 main_~v~0 (* (* .cse2 main_~x~0) 2)) (+ .cse0 (* .cse2 2) .cse1))) (not (= (mod .cse3 main_~X~0) 0)))) (or (forall ((main_~y~0 Int)) (= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))) (not (= main_~X~0 0))))) (<= main_~Y~0 10)))) [2022-04-06 01:03:09,957 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 21 53) the Hoare annotation is: true [2022-04-06 01:03:09,957 INFO L882 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2022-04-06 01:03:09,957 INFO L878 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (* main_~Y~0 2)) (.cse0 (* 2 main_~xy~0)) (.cse4 (* 2 (* main_~Y~0 main_~x~0))) (.cse2 (* 2 main_~yx~0)) (.cse3 (<= main_~x~0 main_~X~0))) (and (= (+ .cse0 main_~X~0 main_~v~0) (+ .cse1 .cse2)) (or .cse3 (forall ((main_~y~0 Int)) (= (+ (* 2 (* main_~y~0 main_~x~0)) main_~X~0 main_~v~0) (+ (* main_~y~0 2) (* main_~Y~0 2) (* 2 (* main_~Y~0 main_~x~0))))) (not (= main_~X~0 0))) (<= main_~X~0 10) (= (+ .cse1 .cse4) (+ (* (* main_~X~0 main_~y~0) 2) main_~X~0 main_~v~0)) (<= 0 main_~Y~0) (<= 0 main_~X~0) (or (= (+ .cse0 (* main_~y~0 2) .cse4) (+ (* 2 (* main_~y~0 main_~x~0)) .cse2)) .cse3) (<= main_~Y~0 10))) [2022-04-06 01:03:09,957 INFO L882 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2022-04-06 01:03:09,957 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-06 01:03:09,957 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 01:03:09,958 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-06 01:03:09,958 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-06 01:03:09,958 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 01:03:09,958 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 01:03:09,958 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-06 01:03:09,958 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2022-04-06 01:03:09,958 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2022-04-06 01:03:09,958 INFO L882 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2022-04-06 01:03:09,958 INFO L882 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2022-04-06 01:03:09,958 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2022-04-06 01:03:09,958 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-04-06 01:03:09,961 INFO L719 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-04-06 01:03:09,963 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 01:03:09,971 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:03:09,972 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:03:09,978 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:03:09,978 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:03:09,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 01:03:09 BoogieIcfgContainer [2022-04-06 01:03:09,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 01:03:09,982 INFO L158 Benchmark]: Toolchain (without parser) took 102924.10ms. Allocated memory was 166.7MB in the beginning and 216.0MB in the end (delta: 49.3MB). Free memory was 118.3MB in the beginning and 186.3MB in the end (delta: -68.0MB). Peak memory consumption was 98.0MB. Max. memory is 8.0GB. [2022-04-06 01:03:09,982 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 166.7MB. Free memory was 135.1MB in the beginning and 135.0MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 01:03:09,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.33ms. Allocated memory is still 166.7MB. Free memory was 118.1MB in the beginning and 144.5MB in the end (delta: -26.4MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2022-04-06 01:03:09,983 INFO L158 Benchmark]: Boogie Preprocessor took 39.59ms. Allocated memory is still 166.7MB. Free memory was 144.3MB in the beginning and 143.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 01:03:09,983 INFO L158 Benchmark]: RCFGBuilder took 320.28ms. Allocated memory is still 166.7MB. Free memory was 143.0MB in the beginning and 132.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 01:03:09,983 INFO L158 Benchmark]: TraceAbstraction took 102237.10ms. Allocated memory was 166.7MB in the beginning and 216.0MB in the end (delta: 49.3MB). Free memory was 132.0MB in the beginning and 186.3MB in the end (delta: -54.4MB). Peak memory consumption was 111.8MB. Max. memory is 8.0GB. [2022-04-06 01:03:09,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 166.7MB. Free memory was 135.1MB in the beginning and 135.0MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 320.33ms. Allocated memory is still 166.7MB. Free memory was 118.1MB in the beginning and 144.5MB in the end (delta: -26.4MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.59ms. Allocated memory is still 166.7MB. Free memory was 144.3MB in the beginning and 143.0MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 320.28ms. Allocated memory is still 166.7MB. Free memory was 143.0MB in the beginning and 132.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 102237.10ms. Allocated memory was 166.7MB in the beginning and 216.0MB in the end (delta: 49.3MB). Free memory was 132.0MB in the beginning and 186.3MB in the end (delta: -54.4MB). Peak memory consumption was 111.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] * 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: 16]: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 102.2s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 31.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 42.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 17.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 1155 SdHoareTripleChecker+Invalid, 17.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 131 IncrementalHoareTripleChecker+Unchecked, 962 mSDsCounter, 100 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1413 IncrementalHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 100 mSolverCounterUnsat, 193 mSDtfsCounter, 1413 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 632 GetRequests, 492 SyntacticMatches, 6 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 27.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=7, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 29 PreInvPairs, 50 NumberOfFragments, 300 HoareAnnotationTreeSize, 29 FomulaSimplifications, 792 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 4612 FormulaSimplificationTreeSizeReductionInter, 42.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 25.7s InterpolantComputationTime, 327 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 594 ConstructedInterpolants, 6 QuantifiedInterpolants, 3384 SizeOfPredicates, 50 NumberOfNonLiveVariables, 854 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 339/426 InterpolantCoveringCapability, 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: 32]: Loop Invariant [2022-04-06 01:03:09,993 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:03:09,993 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:03:09,994 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] [2022-04-06 01:03:09,994 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~y~0,QUANTIFIED] Derived loop invariant: ((((X <= 10 && Y * 2 + 2 * (Y * x) == X * y * 2 + X + v) && 0 <= Y) && 0 <= X) && (x <= X || ((X + v + ((X + v) / -2 + Y + Y * x) / X * x * 2 == Y * 2 + ((X + v) / -2 + Y + Y * x) / X * 2 + 2 * (Y * x) || !(((X + v) / -2 + Y + Y * x) % X == 0)) && ((forall main_~y~0 : int :: 2 * (main_~y~0 * x) + X + v == main_~y~0 * 2 + Y * 2 + 2 * (Y * x)) || !(X == 0))))) && Y <= 10 RESULT: Ultimate proved your program to be correct! [2022-04-06 01:03:10,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...