/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 17:02:22,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 17:02:22,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 17:02:22,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 17:02:23,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 17:02:23,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 17:02:23,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 17:02:23,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-06 17:02:23,038 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 17:02:23,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 17:02:23,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 17:02:23,040 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-06 17:02:23,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 17:02:23,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-06 17:02:23,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 17:02:23,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 17:02:23,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 17:02:23,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 17:02:23,041 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-06 17:02:23,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 17:02:23,042 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 17:02:23,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 17:02:23,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 17:02:23,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 17:02:23,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 17:02:23,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 17:02:23,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 17:02:23,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 17:02:23,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 17:02:23,044 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 17:02:23,044 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 17:02:23,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 17:02:23,044 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-06 17:02:23,044 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 17:02:23,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 17:02:23,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 17:02:23,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 17:02:23,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 17:02:23,298 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 17:02:23,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound2.c [2022-04-06 17:02:23,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26c2d9f0/f90880c0b90642c19d816486a315e3c4/FLAG1f98e32c5 [2022-04-06 17:02:23,790 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 17:02:23,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound2.c [2022-04-06 17:02:23,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26c2d9f0/f90880c0b90642c19d816486a315e3c4/FLAG1f98e32c5 [2022-04-06 17:02:23,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c26c2d9f0/f90880c0b90642c19d816486a315e3c4 [2022-04-06 17:02:23,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 17:02:23,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 17:02:23,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 17:02:23,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 17:02:23,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 17:02:23,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:02:23" (1/1) ... [2022-04-06 17:02:23,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538c0a25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:23, skipping insertion in model container [2022-04-06 17:02:23,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 05:02:23" (1/1) ... [2022-04-06 17:02:23,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 17:02:23,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 17:02:23,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-04-06 17:02:24,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 17:02:24,027 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 17:02:24,040 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2022-04-06 17:02:24,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 17:02:24,072 INFO L208 MainTranslator]: Completed translation [2022-04-06 17:02:24,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24 WrapperNode [2022-04-06 17:02:24,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 17:02:24,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 17:02:24,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 17:02:24,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 17:02:24,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24" (1/1) ... [2022-04-06 17:02:24,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24" (1/1) ... [2022-04-06 17:02:24,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24" (1/1) ... [2022-04-06 17:02:24,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24" (1/1) ... [2022-04-06 17:02:24,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24" (1/1) ... [2022-04-06 17:02:24,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24" (1/1) ... [2022-04-06 17:02:24,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24" (1/1) ... [2022-04-06 17:02:24,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 17:02:24,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 17:02:24,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 17:02:24,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 17:02:24,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24" (1/1) ... [2022-04-06 17:02:24,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 17:02:24,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:24,144 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 17:02:24,170 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 17:02:24,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 17:02:24,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 17:02:24,184 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 17:02:24,184 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 17:02:24,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 17:02:24,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 17:02:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 17:02:24,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 17:02:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 17:02:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 17:02:24,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-06 17:02:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 17:02:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 17:02:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 17:02:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 17:02:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 17:02:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 17:02:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 17:02:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 17:02:24,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 17:02:24,243 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 17:02:24,245 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 17:02:24,409 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 17:02:24,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 17:02:24,415 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-06 17:02:24,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:02:24 BoogieIcfgContainer [2022-04-06 17:02:24,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 17:02:24,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 17:02:24,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 17:02:24,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 17:02:24,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 05:02:23" (1/3) ... [2022-04-06 17:02:24,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ab0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:02:24, skipping insertion in model container [2022-04-06 17:02:24,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 05:02:24" (2/3) ... [2022-04-06 17:02:24,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ab0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 05:02:24, skipping insertion in model container [2022-04-06 17:02:24,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 05:02:24" (3/3) ... [2022-04-06 17:02:24,437 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2022-04-06 17:02:24,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 17:02:24,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 17:02:24,501 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 17:02:24,507 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 17:02:24,507 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 17:02:24,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-06 17:02:24,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 17:02:24,542 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:24,543 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:24,544 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:24,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:24,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 1 times [2022-04-06 17:02:24,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:24,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1503394] [2022-04-06 17:02:24,571 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1784424332, now seen corresponding path program 2 times [2022-04-06 17:02:24,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:24,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242261037] [2022-04-06 17:02:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:24,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:24,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 17:02:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:24,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 17:02:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:24,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 17:02:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:24,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 17:02:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 17:02:24,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:24,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242261037] [2022-04-06 17:02:24,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242261037] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:24,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:24,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 17:02:24,802 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:24,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1503394] [2022-04-06 17:02:24,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1503394] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:24,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:24,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 17:02:24,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792514880] [2022-04-06 17:02:24,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:24,807 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 17:02:24,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:24,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 17:02:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 17:02:24,835 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 17:02:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:24,945 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2022-04-06 17:02:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 17:02:24,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-04-06 17:02:24,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:24,955 INFO L225 Difference]: With dead ends: 69 [2022-04-06 17:02:24,955 INFO L226 Difference]: Without dead ends: 33 [2022-04-06 17:02:24,957 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 17:02:24,963 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:24,964 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:02:24,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-06 17:02:25,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-04-06 17:02:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 17:02:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-04-06 17:02:25,014 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2022-04-06 17:02:25,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:25,014 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-04-06 17:02:25,015 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-06 17:02:25,015 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-04-06 17:02:25,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-04-06 17:02:25,017 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:25,018 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:25,018 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 17:02:25,019 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:25,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:25,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 1 times [2022-04-06 17:02:25,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:25,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [272315920] [2022-04-06 17:02:25,022 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:25,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1361835634, now seen corresponding path program 2 times [2022-04-06 17:02:25,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:25,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058874020] [2022-04-06 17:02:25,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:25,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 17:02:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 17:02:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 17:02:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 17:02:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 17:02:25,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:25,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058874020] [2022-04-06 17:02:25,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058874020] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:25,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:25,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 17:02:25,185 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:25,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [272315920] [2022-04-06 17:02:25,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [272315920] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:25,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:25,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 17:02:25,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269136295] [2022-04-06 17:02:25,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:25,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 17:02:25,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 17:02:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 17:02:25,188 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 17:02:25,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:25,405 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-04-06 17:02:25,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 17:02:25,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-04-06 17:02:25,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:25,407 INFO L225 Difference]: With dead ends: 46 [2022-04-06 17:02:25,407 INFO L226 Difference]: Without dead ends: 44 [2022-04-06 17:02:25,407 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 17:02:25,408 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:25,409 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 48 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 17:02:25,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-04-06 17:02:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-04-06 17:02:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 17:02:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-04-06 17:02:25,419 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2022-04-06 17:02:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:25,420 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-04-06 17:02:25,420 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-04-06 17:02:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-04-06 17:02:25,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 17:02:25,421 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:25,421 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:25,421 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 17:02:25,421 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:25,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:25,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 1 times [2022-04-06 17:02:25,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:25,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1471732119] [2022-04-06 17:02:25,422 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:25,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1382067636, now seen corresponding path program 2 times [2022-04-06 17:02:25,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:25,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181424836] [2022-04-06 17:02:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:25,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 17:02:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 17:02:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 17:02:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 17:02:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-04-06 17:02:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 17:02:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 17:02:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:25,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181424836] [2022-04-06 17:02:25,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181424836] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:25,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:25,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 17:02:25,550 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:25,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1471732119] [2022-04-06 17:02:25,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1471732119] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:25,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:25,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 17:02:25,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909880865] [2022-04-06 17:02:25,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:25,551 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 17:02:25,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 17:02:25,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 17:02:25,552 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 17:02:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:25,748 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-04-06 17:02:25,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 17:02:25,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-04-06 17:02:25,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:25,750 INFO L225 Difference]: With dead ends: 50 [2022-04-06 17:02:25,751 INFO L226 Difference]: Without dead ends: 48 [2022-04-06 17:02:25,751 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-04-06 17:02:25,753 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:25,758 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:02:25,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-04-06 17:02:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-04-06 17:02:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-04-06 17:02:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-04-06 17:02:25,782 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2022-04-06 17:02:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:25,783 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-04-06 17:02:25,783 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-04-06 17:02:25,783 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-04-06 17:02:25,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-06 17:02:25,784 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:25,784 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:25,784 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 17:02:25,784 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:25,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:25,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 1 times [2022-04-06 17:02:25,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:25,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [881621061] [2022-04-06 17:02:25,785 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:25,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1455208590, now seen corresponding path program 2 times [2022-04-06 17:02:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:25,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235267013] [2022-04-06 17:02:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:25,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:25,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:25,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789223312] [2022-04-06 17:02:25,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:02:25,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:25,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:25,809 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 17:02:25,831 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 17:02:25,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:02:25,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:25,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-06 17:02:25,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-04-06 17:02:26,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 17:02:26,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235267013] [2022-04-06 17:02:26,230 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:26,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789223312] [2022-04-06 17:02:26,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789223312] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:26,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:26,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 17:02:26,232 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:26,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [881621061] [2022-04-06 17:02:26,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [881621061] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:26,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:26,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 17:02:26,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413395216] [2022-04-06 17:02:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:26,233 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 17:02:26,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 17:02:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-04-06 17:02:26,234 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-06 17:02:26,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:26,376 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-04-06 17:02:26,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 17:02:26,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 38 [2022-04-06 17:02:26,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:26,378 INFO L225 Difference]: With dead ends: 69 [2022-04-06 17:02:26,379 INFO L226 Difference]: Without dead ends: 55 [2022-04-06 17:02:26,380 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 17:02:26,387 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:26,388 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 194 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 17:02:26,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-04-06 17:02:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-04-06 17:02:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-04-06 17:02:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-04-06 17:02:26,409 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2022-04-06 17:02:26,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:26,409 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-04-06 17:02:26,410 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-06 17:02:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-04-06 17:02:26,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-06 17:02:26,412 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:26,412 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:26,435 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 17:02:26,627 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:26,628 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:26,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:26,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 1 times [2022-04-06 17:02:26,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:26,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1805665619] [2022-04-06 17:02:26,629 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1688067263, now seen corresponding path program 2 times [2022-04-06 17:02:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:26,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011330751] [2022-04-06 17:02:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:26,641 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:26,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920514901] [2022-04-06 17:02:26,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:02:26,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:26,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:26,643 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 17:02:26,644 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 17:02:26,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:02:26,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:26,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 17:02:26,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-06 17:02:26,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 17:02:27,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:27,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011330751] [2022-04-06 17:02:27,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:27,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920514901] [2022-04-06 17:02:27,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920514901] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 17:02:27,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 17:02:27,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2022-04-06 17:02:27,199 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:27,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1805665619] [2022-04-06 17:02:27,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1805665619] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:27,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:27,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 17:02:27,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923376733] [2022-04-06 17:02:27,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:27,200 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 17:02:27,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 17:02:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 17:02:27,201 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 17:02:27,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:27,281 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2022-04-06 17:02:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 17:02:27,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2022-04-06 17:02:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:27,286 INFO L225 Difference]: With dead ends: 68 [2022-04-06 17:02:27,286 INFO L226 Difference]: Without dead ends: 66 [2022-04-06 17:02:27,286 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-06 17:02:27,290 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 16 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:27,291 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 128 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 17:02:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-04-06 17:02:27,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2022-04-06 17:02:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 38 states have internal predecessors, (43), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 17:02:27,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2022-04-06 17:02:27,320 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 45 [2022-04-06 17:02:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:27,321 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2022-04-06 17:02:27,321 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 17:02:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2022-04-06 17:02:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-06 17:02:27,328 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:27,328 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:27,353 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 17:02:27,547 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:27,548 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 1 times [2022-04-06 17:02:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:27,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [547747217] [2022-04-06 17:02:27,549 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:27,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1471734606, now seen corresponding path program 2 times [2022-04-06 17:02:27,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:27,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222954871] [2022-04-06 17:02:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:27,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:27,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:27,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547984351] [2022-04-06 17:02:27,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:02:27,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:27,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:27,562 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 17:02:27,565 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 17:02:27,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:02:27,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:27,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 17:02:27,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-04-06 17:02:27,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-04-06 17:02:28,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:28,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222954871] [2022-04-06 17:02:28,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:28,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547984351] [2022-04-06 17:02:28,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547984351] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 17:02:28,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 17:02:28,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2022-04-06 17:02:28,108 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:28,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [547747217] [2022-04-06 17:02:28,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [547747217] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:28,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:28,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 17:02:28,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776554320] [2022-04-06 17:02:28,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:28,109 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 17:02:28,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:28,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 17:02:28,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-04-06 17:02:28,111 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 17:02:28,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:28,178 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2022-04-06 17:02:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 17:02:28,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2022-04-06 17:02:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:28,181 INFO L225 Difference]: With dead ends: 76 [2022-04-06 17:02:28,181 INFO L226 Difference]: Without dead ends: 74 [2022-04-06 17:02:28,182 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-06 17:02:28,183 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:28,183 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 129 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 17:02:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-04-06 17:02:28,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-04-06 17:02:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 40 states have (on average 1.175) internal successors, (47), 43 states have internal predecessors, (47), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-04-06 17:02:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2022-04-06 17:02:28,207 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 55 [2022-04-06 17:02:28,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:28,207 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2022-04-06 17:02:28,207 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-06 17:02:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2022-04-06 17:02:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-04-06 17:02:28,210 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:28,210 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:28,235 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 17:02:28,431 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:28,431 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:28,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:28,432 INFO L85 PathProgramCache]: Analyzing trace with hash -682689219, now seen corresponding path program 1 times [2022-04-06 17:02:28,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:28,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1448876876] [2022-04-06 17:02:28,433 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash -682689219, now seen corresponding path program 2 times [2022-04-06 17:02:28,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:28,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165721561] [2022-04-06 17:02:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:28,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:28,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:28,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784829453] [2022-04-06 17:02:28,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:02:28,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:28,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:28,450 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 17:02:28,452 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 17:02:28,495 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:02:28,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:28,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 17:02:28,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-04-06 17:02:28,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 17:02:28,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:28,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165721561] [2022-04-06 17:02:28,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:28,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784829453] [2022-04-06 17:02:28,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784829453] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:28,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:28,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 17:02:28,648 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1448876876] [2022-04-06 17:02:28,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1448876876] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:28,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:28,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 17:02:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704957818] [2022-04-06 17:02:28,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:28,649 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 17:02:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 17:02:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 17:02:28,650 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 17:02:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:28,714 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2022-04-06 17:02:28,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 17:02:28,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2022-04-06 17:02:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:28,717 INFO L225 Difference]: With dead ends: 79 [2022-04-06 17:02:28,717 INFO L226 Difference]: Without dead ends: 72 [2022-04-06 17:02:28,717 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 17:02:28,718 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:28,718 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 123 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 17:02:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-04-06 17:02:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-04-06 17:02:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.146341463414634) internal successors, (47), 44 states have internal predecessors, (47), 20 states have call successors, (20), 10 states have call predecessors, (20), 9 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-04-06 17:02:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-04-06 17:02:28,748 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 56 [2022-04-06 17:02:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:28,749 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-04-06 17:02:28,749 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-04-06 17:02:28,749 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-04-06 17:02:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-06 17:02:28,750 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:28,750 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:28,777 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 17:02:28,973 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:28,973 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:28,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 1 times [2022-04-06 17:02:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:28,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2118222307] [2022-04-06 17:02:28,974 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:28,974 INFO L85 PathProgramCache]: Analyzing trace with hash 680531353, now seen corresponding path program 2 times [2022-04-06 17:02:28,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:28,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134854372] [2022-04-06 17:02:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:28,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:28,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646822290] [2022-04-06 17:02:28,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:02:28,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:28,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:28,989 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 17:02:29,000 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 17:02:29,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:02:29,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:29,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-06 17:02:29,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-04-06 17:02:29,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-04-06 17:02:31,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:31,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134854372] [2022-04-06 17:02:31,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:31,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646822290] [2022-04-06 17:02:31,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646822290] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:02:31,291 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:02:31,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2022-04-06 17:02:31,291 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:31,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2118222307] [2022-04-06 17:02:31,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2118222307] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:31,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:31,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 17:02:31,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628800939] [2022-04-06 17:02:31,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:31,292 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 17:02:31,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:31,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 17:02:31,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-04-06 17:02:31,293 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-04-06 17:02:31,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:31,566 INFO L93 Difference]: Finished difference Result 135 states and 165 transitions. [2022-04-06 17:02:31,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 17:02:31,566 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2022-04-06 17:02:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:31,568 INFO L225 Difference]: With dead ends: 135 [2022-04-06 17:02:31,568 INFO L226 Difference]: Without dead ends: 108 [2022-04-06 17:02:31,569 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-04-06 17:02:31,569 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 28 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:31,570 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 175 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 17:02:31,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-04-06 17:02:31,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2022-04-06 17:02:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.140625) internal successors, (73), 67 states have internal predecessors, (73), 27 states have call successors, (27), 15 states have call predecessors, (27), 14 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-06 17:02:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 125 transitions. [2022-04-06 17:02:31,584 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 125 transitions. Word has length 75 [2022-04-06 17:02:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:31,584 INFO L478 AbstractCegarLoop]: Abstraction has 106 states and 125 transitions. [2022-04-06 17:02:31,584 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-04-06 17:02:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 125 transitions. [2022-04-06 17:02:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-06 17:02:31,585 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:31,585 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:31,611 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 17:02:31,799 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:31,800 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 3 times [2022-04-06 17:02:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [645499634] [2022-04-06 17:02:31,801 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:31,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1566820819, now seen corresponding path program 4 times [2022-04-06 17:02:31,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:31,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868808541] [2022-04-06 17:02:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:31,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:31,810 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:31,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038370433] [2022-04-06 17:02:31,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 17:02:31,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:31,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:31,811 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 17:02:31,813 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 17:02:31,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 17:02:31,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:31,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2022-04-06 17:02:31,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-04-06 17:02:32,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-04-06 17:02:34,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:34,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868808541] [2022-04-06 17:02:34,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:34,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038370433] [2022-04-06 17:02:34,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038370433] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:02:34,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:02:34,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2022-04-06 17:02:34,758 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:34,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [645499634] [2022-04-06 17:02:34,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [645499634] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:34,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:34,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 17:02:34,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861971646] [2022-04-06 17:02:34,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:34,759 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 17:02:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:34,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 17:02:34,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-04-06 17:02:34,760 INFO L87 Difference]: Start difference. First operand 106 states and 125 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 17:02:35,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:35,142 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2022-04-06 17:02:35,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 17:02:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-04-06 17:02:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:35,145 INFO L225 Difference]: With dead ends: 133 [2022-04-06 17:02:35,145 INFO L226 Difference]: Without dead ends: 110 [2022-04-06 17:02:35,145 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-04-06 17:02:35,146 INFO L913 BasicCegarLoop]: 48 mSDtfsCounter, 26 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:35,146 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 227 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 17:02:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-04-06 17:02:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-04-06 17:02:35,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 66 states have (on average 1.106060606060606) internal successors, (73), 70 states have internal predecessors, (73), 28 states have call successors, (28), 16 states have call predecessors, (28), 15 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-06 17:02:35,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2022-04-06 17:02:35,160 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 80 [2022-04-06 17:02:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:35,160 INFO L478 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2022-04-06 17:02:35,160 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-06 17:02:35,160 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2022-04-06 17:02:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-04-06 17:02:35,161 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:35,161 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:35,184 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 17:02:35,375 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:35,376 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:35,376 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 1 times [2022-04-06 17:02:35,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:35,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [201058332] [2022-04-06 17:02:35,377 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:35,377 INFO L85 PathProgramCache]: Analyzing trace with hash -815356955, now seen corresponding path program 2 times [2022-04-06 17:02:35,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:35,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813514592] [2022-04-06 17:02:35,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:35,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:35,385 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:35,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95047957] [2022-04-06 17:02:35,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:02:35,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:35,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:35,392 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 17:02:35,420 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 17:02:35,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:02:35,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:35,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-06 17:02:35,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:35,983 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-04-06 17:02:35,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:02:37,728 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-04-06 17:02:37,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:02:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813514592] [2022-04-06 17:02:37,728 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:02:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95047957] [2022-04-06 17:02:37,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95047957] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:02:37,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:02:37,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2022-04-06 17:02:37,729 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:02:37,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [201058332] [2022-04-06 17:02:37,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [201058332] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:02:37,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:02:37,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-04-06 17:02:37,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973238517] [2022-04-06 17:02:37,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:02:37,730 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-06 17:02:37,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:37,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-06 17:02:37,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-04-06 17:02:37,731 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-04-06 17:02:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:02:38,348 INFO L93 Difference]: Finished difference Result 145 states and 170 transitions. [2022-04-06 17:02:38,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-06 17:02:38,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 86 [2022-04-06 17:02:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:02:38,350 INFO L225 Difference]: With dead ends: 145 [2022-04-06 17:02:38,350 INFO L226 Difference]: Without dead ends: 96 [2022-04-06 17:02:38,351 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-04-06 17:02:38,351 INFO L913 BasicCegarLoop]: 48 mSDtfsCounter, 10 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 17:02:38,351 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 236 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 17:02:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-04-06 17:02:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2022-04-06 17:02:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 55 states have internal predecessors, (59), 23 states have call successors, (23), 13 states have call predecessors, (23), 12 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-04-06 17:02:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 103 transitions. [2022-04-06 17:02:38,367 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 103 transitions. Word has length 86 [2022-04-06 17:02:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:02:38,368 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 103 transitions. [2022-04-06 17:02:38,368 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-04-06 17:02:38,368 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 103 transitions. [2022-04-06 17:02:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-04-06 17:02:38,371 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:02:38,371 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:02:38,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 17:02:38,595 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:38,596 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:02:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:02:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1885636697, now seen corresponding path program 5 times [2022-04-06 17:02:38,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:02:38,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [293344941] [2022-04-06 17:02:38,597 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:02:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1885636697, now seen corresponding path program 6 times [2022-04-06 17:02:38,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:02:38,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855108728] [2022-04-06 17:02:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:02:38,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:02:38,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:02:38,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984624280] [2022-04-06 17:02:38,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 17:02:38,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:02:38,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:02:38,606 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:02:38,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 17:02:38,656 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-04-06 17:02:38,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:02:38,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-06 17:02:38,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:02:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 55 proven. 9 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-04-06 17:02:55,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:03:26,751 WARN L232 SmtUtils]: Spent 18.49s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-04-06 17:04:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 45 proven. 19 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-04-06 17:04:08,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:04:08,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855108728] [2022-04-06 17:04:08,305 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:04:08,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984624280] [2022-04-06 17:04:08,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984624280] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:04:08,305 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:04:08,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2022-04-06 17:04:08,306 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:04:08,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [293344941] [2022-04-06 17:04:08,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [293344941] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:04:08,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:04:08,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-06 17:04:08,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48270907] [2022-04-06 17:04:08,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:04:08,306 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-04-06 17:04:08,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:04:08,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-04-06 17:04:08,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=161, Unknown=3, NotChecked=0, Total=210 [2022-04-06 17:04:08,307 INFO L87 Difference]: Start difference. First operand 89 states and 103 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 17:04:09,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 17:04:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:04:10,295 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2022-04-06 17:04:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 17:04:10,295 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 92 [2022-04-06 17:04:10,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:04:10,297 INFO L225 Difference]: With dead ends: 107 [2022-04-06 17:04:10,297 INFO L226 Difference]: Without dead ends: 95 [2022-04-06 17:04:10,297 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 167 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=59, Invalid=210, Unknown=3, NotChecked=0, Total=272 [2022-04-06 17:04:10,298 INFO L913 BasicCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-04-06 17:04:10,298 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 117 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-04-06 17:04:10,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-04-06 17:04:10,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-04-06 17:04:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 57 states have (on average 1.087719298245614) internal successors, (62), 60 states have internal predecessors, (62), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-04-06 17:04:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2022-04-06 17:04:10,310 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 92 [2022-04-06 17:04:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:04:10,310 INFO L478 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2022-04-06 17:04:10,310 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 10 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-04-06 17:04:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2022-04-06 17:04:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-04-06 17:04:10,311 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:04:10,312 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 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, 1] [2022-04-06 17:04:10,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-06 17:04:10,534 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-06 17:04:10,534 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:04:10,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:04:10,535 INFO L85 PathProgramCache]: Analyzing trace with hash -278824083, now seen corresponding path program 7 times [2022-04-06 17:04:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:04:10,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [546425856] [2022-04-06 17:04:10,536 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:04:10,536 INFO L85 PathProgramCache]: Analyzing trace with hash -278824083, now seen corresponding path program 8 times [2022-04-06 17:04:10,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:04:10,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767688400] [2022-04-06 17:04:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:04:10,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:04:10,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:04:10,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679489902] [2022-04-06 17:04:10,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:04:10,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:04:10,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:04:10,548 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:04:10,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 17:04:10,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:04:10,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:04:10,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 38 conjunts are in the unsatisfiable core [2022-04-06 17:04:10,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:04:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 28 proven. 80 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-04-06 17:04:11,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:04:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 37 proven. 38 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-04-06 17:04:14,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:04:14,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767688400] [2022-04-06 17:04:14,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:04:14,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679489902] [2022-04-06 17:04:14,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679489902] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:04:14,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:04:14,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 21 [2022-04-06 17:04:14,430 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:04:14,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [546425856] [2022-04-06 17:04:14,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [546425856] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:04:14,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:04:14,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-04-06 17:04:14,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499309956] [2022-04-06 17:04:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:04:14,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-06 17:04:14,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:04:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-06 17:04:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-04-06 17:04:14,432 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-04-06 17:04:15,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:04:15,543 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2022-04-06 17:04:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 17:04:15,543 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 97 [2022-04-06 17:04:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:04:15,544 INFO L225 Difference]: With dead ends: 154 [2022-04-06 17:04:15,544 INFO L226 Difference]: Without dead ends: 129 [2022-04-06 17:04:15,545 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-04-06 17:04:15,545 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 36 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 17:04:15,546 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 277 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 17:04:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-04-06 17:04:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-04-06 17:04:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 82 states have internal predecessors, (84), 35 states have call successors, (35), 17 states have call predecessors, (35), 16 states have return successors, (32), 29 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-06 17:04:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2022-04-06 17:04:15,565 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 97 [2022-04-06 17:04:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:04:15,566 INFO L478 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2022-04-06 17:04:15,566 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 8 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-04-06 17:04:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2022-04-06 17:04:15,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-04-06 17:04:15,567 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:04:15,567 INFO L499 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 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 17:04:15,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 17:04:15,791 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:04:15,792 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:04:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:04:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash -367001023, now seen corresponding path program 9 times [2022-04-06 17:04:15,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:04:15,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1901335850] [2022-04-06 17:04:15,793 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:04:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash -367001023, now seen corresponding path program 10 times [2022-04-06 17:04:15,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:04:15,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185641879] [2022-04-06 17:04:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:04:15,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:04:15,800 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:04:15,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332133962] [2022-04-06 17:04:15,801 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 17:04:15,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:04:15,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:04:15,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:04:15,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 17:04:15,864 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 17:04:15,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:04:15,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 17:04:15,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:04:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 45 proven. 11 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-04-06 17:04:16,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:04:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-04-06 17:04:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:04:17,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185641879] [2022-04-06 17:04:17,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:04:17,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332133962] [2022-04-06 17:04:17,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332133962] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:04:17,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:04:17,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-04-06 17:04:17,399 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:04:17,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1901335850] [2022-04-06 17:04:17,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1901335850] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:04:17,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:04:17,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-06 17:04:17,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088502976] [2022-04-06 17:04:17,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:04:17,400 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 17:04:17,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:04:17,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 17:04:17,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-04-06 17:04:17,401 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-04-06 17:04:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:04:18,491 INFO L93 Difference]: Finished difference Result 176 states and 217 transitions. [2022-04-06 17:04:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 17:04:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 105 [2022-04-06 17:04:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:04:18,493 INFO L225 Difference]: With dead ends: 176 [2022-04-06 17:04:18,493 INFO L226 Difference]: Without dead ends: 148 [2022-04-06 17:04:18,493 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2022-04-06 17:04:18,494 INFO L913 BasicCegarLoop]: 68 mSDtfsCounter, 32 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-06 17:04:18,494 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 275 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-06 17:04:18,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-04-06 17:04:18,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 142. [2022-04-06 17:04:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 89 states have internal predecessors, (95), 40 states have call successors, (40), 17 states have call predecessors, (40), 16 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 17:04:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2022-04-06 17:04:18,524 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 105 [2022-04-06 17:04:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:04:18,524 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2022-04-06 17:04:18,524 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 8 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-04-06 17:04:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2022-04-06 17:04:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-04-06 17:04:18,525 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:04:18,526 INFO L499 BasicCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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 17:04:18,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 17:04:18,739 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-06 17:04:18,739 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:04:18,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:04:18,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1683530195, now seen corresponding path program 11 times [2022-04-06 17:04:18,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:04:18,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [697011721] [2022-04-06 17:04:18,741 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:04:18,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1683530195, now seen corresponding path program 12 times [2022-04-06 17:04:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:04:18,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705231734] [2022-04-06 17:04:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:04:18,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:04:18,748 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:04:18,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972451843] [2022-04-06 17:04:18,748 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 17:04:18,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:04:18,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:04:18,750 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:04:18,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 17:04:18,824 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-04-06 17:04:18,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:04:18,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 33 conjunts are in the unsatisfiable core [2022-04-06 17:04:18,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:04:19,219 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-06 17:04:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2022-04-06 17:04:30,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:04:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 107 proven. 21 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-04-06 17:04:39,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:04:39,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705231734] [2022-04-06 17:04:39,996 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:04:39,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972451843] [2022-04-06 17:04:39,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972451843] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:04:39,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:04:39,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 18 [2022-04-06 17:04:39,997 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:04:39,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [697011721] [2022-04-06 17:04:39,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [697011721] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:04:39,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:04:39,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-04-06 17:04:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226429879] [2022-04-06 17:04:39,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:04:39,997 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-06 17:04:39,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:04:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-06 17:04:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=228, Unknown=4, NotChecked=0, Total=306 [2022-04-06 17:04:39,998 INFO L87 Difference]: Start difference. First operand 142 states and 172 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-04-06 17:04:42,248 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 17:04:44,851 WARN L534 Checker$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 17:04:52,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 17:04:54,775 WARN L534 Checker$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 17:04:56,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 17:04:58,836 WARN L534 Checker$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 17:05:00,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 17:05:02,977 WARN L534 Checker$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 17:05:04,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 17:05:06,164 WARN L534 Checker$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 17:05:08,167 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 17:05:10,181 WARN L534 Checker$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 17:05:12,188 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 17:05:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:05:15,250 INFO L93 Difference]: Finished difference Result 161 states and 188 transitions. [2022-04-06 17:05:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 17:05:15,251 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 114 [2022-04-06 17:05:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:05:15,252 INFO L225 Difference]: With dead ends: 161 [2022-04-06 17:05:15,252 INFO L226 Difference]: Without dead ends: 149 [2022-04-06 17:05:15,252 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=99, Invalid=317, Unknown=4, NotChecked=0, Total=420 [2022-04-06 17:05:15,253 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 14 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.3s IncrementalHoareTripleChecker+Time [2022-04-06 17:05:15,253 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 235 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 342 Invalid, 12 Unknown, 0 Unchecked, 29.3s Time] [2022-04-06 17:05:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-04-06 17:05:15,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-04-06 17:05:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 91 states have (on average 1.098901098901099) internal successors, (100), 94 states have internal predecessors, (100), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-06 17:05:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 175 transitions. [2022-04-06 17:05:15,280 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 175 transitions. Word has length 114 [2022-04-06 17:05:15,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:05:15,281 INFO L478 AbstractCegarLoop]: Abstraction has 149 states and 175 transitions. [2022-04-06 17:05:15,281 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 10 states have internal predecessors, (28), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-04-06 17:05:15,281 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 175 transitions. [2022-04-06 17:05:15,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 17:05:15,282 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:05:15,282 INFO L499 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:05:15,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-04-06 17:05:15,487 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-06 17:05:15,487 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:05:15,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:05:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1087601215, now seen corresponding path program 1 times [2022-04-06 17:05:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:05:15,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [13882704] [2022-04-06 17:05:15,488 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:05:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1087601215, now seen corresponding path program 2 times [2022-04-06 17:05:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:05:15,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136438770] [2022-04-06 17:05:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:05:15,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:05:15,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:05:15,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14306214] [2022-04-06 17:05:15,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:05:15,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:05:15,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:05:15,497 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:05:15,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-06 17:05:15,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:05:15,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:05:15,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 41 conjunts are in the unsatisfiable core [2022-04-06 17:05:15,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:05:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 30 proven. 34 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2022-04-06 17:05:29,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:05:33,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:05:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136438770] [2022-04-06 17:05:33,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:05:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14306214] [2022-04-06 17:05:33,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14306214] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 17:05:33,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 17:05:33,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-04-06 17:05:33,646 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:05:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [13882704] [2022-04-06 17:05:33,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [13882704] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:05:33,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:05:33,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-04-06 17:05:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930802004] [2022-04-06 17:05:33,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:05:33,647 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 17:05:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:05:33,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 17:05:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=391, Unknown=4, NotChecked=0, Total=506 [2022-04-06 17:05:33,648 INFO L87 Difference]: Start difference. First operand 149 states and 175 transitions. Second operand has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-04-06 17:05:35,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-04-06 17:05:37,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-04-06 17:05:40,033 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-04-06 17:05:42,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-04-06 17:05:44,942 WARN L534 Checker$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 17:05:47,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 17:05:49,800 WARN L534 Checker$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 17:05:51,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-04-06 17:05:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:05:52,253 INFO L93 Difference]: Finished difference Result 155 states and 180 transitions. [2022-04-06 17:05:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-06 17:05:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 116 [2022-04-06 17:05:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:05:52,255 INFO L225 Difference]: With dead ends: 155 [2022-04-06 17:05:52,255 INFO L226 Difference]: Without dead ends: 126 [2022-04-06 17:05:52,255 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=115, Invalid=433, Unknown=4, NotChecked=0, Total=552 [2022-04-06 17:05:52,255 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 24 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 24 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-04-06 17:05:52,256 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 387 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 501 Invalid, 8 Unknown, 34 Unchecked, 18.5s Time] [2022-04-06 17:05:52,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-04-06 17:05:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-04-06 17:05:52,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 77 states have (on average 1.103896103896104) internal successors, (85), 79 states have internal predecessors, (85), 32 states have call successors, (32), 17 states have call predecessors, (32), 16 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-04-06 17:05:52,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 147 transitions. [2022-04-06 17:05:52,276 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 147 transitions. Word has length 116 [2022-04-06 17:05:52,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:05:52,276 INFO L478 AbstractCegarLoop]: Abstraction has 126 states and 147 transitions. [2022-04-06 17:05:52,276 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-04-06 17:05:52,276 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 147 transitions. [2022-04-06 17:05:52,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-04-06 17:05:52,277 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 17:05:52,277 INFO L499 BasicCegarLoop]: trace histogram [18, 17, 17, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 17:05:52,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-06 17:05:52,491 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-04-06 17:05:52,491 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 17:05:52,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 17:05:52,492 INFO L85 PathProgramCache]: Analyzing trace with hash -523768505, now seen corresponding path program 1 times [2022-04-06 17:05:52,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 17:05:52,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [139878364] [2022-04-06 17:05:52,492 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 17:05:52,493 INFO L85 PathProgramCache]: Analyzing trace with hash -523768505, now seen corresponding path program 2 times [2022-04-06 17:05:52,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 17:05:52,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151536742] [2022-04-06 17:05:52,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 17:05:52,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 17:05:52,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 17:05:52,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164117239] [2022-04-06 17:05:52,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 17:05:52,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 17:05:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 17:05:52,507 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 17:05:52,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-06 17:05:52,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 17:05:52,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 17:05:52,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 17:05:52,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 17:05:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 264 proven. 36 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-04-06 17:05:53,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 17:05:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-04-06 17:05:53,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 17:05:53,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151536742] [2022-04-06 17:05:53,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 17:05:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164117239] [2022-04-06 17:05:53,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164117239] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 17:05:53,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 17:05:53,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-04-06 17:05:53,625 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 17:05:53,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [139878364] [2022-04-06 17:05:53,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [139878364] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 17:05:53,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 17:05:53,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 17:05:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201937230] [2022-04-06 17:05:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 17:05:53,626 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 17:05:53,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 17:05:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 17:05:53,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-04-06 17:05:53,627 INFO L87 Difference]: Start difference. First operand 126 states and 147 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-04-06 17:05:54,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 17:05:54,243 INFO L93 Difference]: Finished difference Result 130 states and 150 transitions. [2022-04-06 17:05:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 17:05:54,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 127 [2022-04-06 17:05:54,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 17:05:54,244 INFO L225 Difference]: With dead ends: 130 [2022-04-06 17:05:54,244 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 17:05:54,244 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-04-06 17:05:54,245 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 4 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-04-06 17:05:54,245 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 197 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-04-06 17:05:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 17:05:54,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 17:05:54,246 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 17:05:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 17:05:54,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 127 [2022-04-06 17:05:54,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 17:05:54,246 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 17:05:54,246 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 7 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-04-06 17:05:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 17:05:54,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 17:05:54,248 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 17:05:54,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-06 17:05:54,449 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-06 17:05:54,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 17:06:37,450 WARN L232 SmtUtils]: Spent 42.84s on a formula simplification. DAG size of input: 157 DAG size of output: 82 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 17:08:05,029 WARN L232 SmtUtils]: Spent 1.46m on a formula simplification. DAG size of input: 154 DAG size of output: 80 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 17:09:20,606 WARN L232 SmtUtils]: Spent 1.20m on a formula simplification. DAG size of input: 154 DAG size of output: 80 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 17:09:45,360 WARN L232 SmtUtils]: Spent 24.75s on a formula simplification. DAG size of input: 125 DAG size of output: 70 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 17:10:50,179 WARN L232 SmtUtils]: Spent 1.06m on a formula simplification. DAG size of input: 154 DAG size of output: 80 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 17:10:52,841 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 8) no Hoare annotation was computed. [2022-04-06 17:10:52,841 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 8) no Hoare annotation was computed. [2022-04-06 17:10:52,842 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 8) no Hoare annotation was computed. [2022-04-06 17:10:52,842 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 11 13) the Hoare annotation is: true [2022-04-06 17:10:52,842 INFO L878 garLoopResultBuilder]: At program point L12(line 12) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-04-06 17:10:52,842 INFO L878 garLoopResultBuilder]: At program point L12-2(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 17:10:52,842 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 11 13) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-04-06 17:10:52,842 INFO L878 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (<= .cse0 2) (<= 1 .cse0) (<= (mod main_~A~0 4294967296) 2))) [2022-04-06 17:10:52,842 INFO L878 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod main_~B~0 4294967296))) (and (= main_~d~0 .cse0) (<= .cse0 2) (<= 1 .cse0) (= main_~p~0 1))) [2022-04-06 17:10:52,842 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 63) the Hoare annotation is: true [2022-04-06 17:10:52,842 INFO L878 garLoopResultBuilder]: At program point L54(lines 54 57) the Hoare annotation is: (let ((.cse6 (mod main_~A~0 4294967296)) (.cse1 (mod main_~B~0 4294967296))) (let ((.cse0 (= main_~d~0 .cse1)) (.cse5 (= main_~p~0 1)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse1)) .cse6)) (.cse3 (< main_~r~0 (* main_~d~0 2))) (.cse4 (= main_~q~0 0)) (.cse7 (* (- 1) main_~r~0)) (.cse8 (* (- 1) main_~d~0))) (or (and .cse0 (<= .cse1 2) .cse2 .cse3 .cse4 (<= .cse1 main_~r~0) .cse5) (and .cse0 (<= (div (+ (* (- 2) .cse6) (* main_~r~0 2)) (- 4)) (div .cse6 2)) (= main_~d~0 (div (+ .cse6 .cse7) 2)) .cse2 (<= .cse6 2) (< (div (+ .cse8 (div (+ (- 1) .cse7) 2)) (- 2)) (+ main_~d~0 1)) .cse5) (let ((.cse10 (* main_~p~0 2)) (.cse9 (* 4 (div (div .cse8 (- 2)) .cse1)))) (and (= (mod (div (- main_~d~0) (- 2)) .cse1) 0) (< main_~d~0 (+ main_~r~0 1)) .cse2 (< .cse9 (+ .cse10 2)) (not (= .cse1 0)) .cse3 (<= .cse10 .cse9) (= (mod main_~d~0 2) 0) .cse4 (< (div (+ 2 .cse7) (- 4294967296)) 1)))))) [2022-04-06 17:10:52,843 INFO L878 garLoopResultBuilder]: At program point L54-2(lines 22 63) the Hoare annotation is: (let ((.cse3 (mod main_~B~0 4294967296)) (.cse4 (mod main_~A~0 4294967296))) (let ((.cse8 (= main_~p~0 1)) (.cse10 (= (+ main_~d~0 main_~r~0) .cse4)) (.cse0 (<= 1 .cse3)) (.cse7 (* (- 1) main_~d~0)) (.cse6 (<= .cse4 2)) (.cse11 (< main_~d~0 (+ .cse4 1))) (.cse9 (<= .cse3 2)) (.cse12 (= main_~d~0 (* main_~p~0 .cse3))) (.cse13 (= main_~p~0 2)) (.cse1 (= (+ main_~r~0 (* main_~q~0 .cse3)) .cse4)) (.cse2 (= main_~q~0 0))) (or (and (<= (div main_~d~0 2) main_~r~0) .cse0 .cse1 .cse2 (= main_~p~0 4) (= main_~d~0 (* (* .cse3 (div main_~p~0 2)) 2)) (<= (mod main_~r~0 4294967296) 2)) (let ((.cse5 (* (- 1) main_~r~0))) (and (= main_~d~0 .cse3) (<= (div (+ (* (- 2) .cse4) (* main_~r~0 2)) (- 4)) (div .cse4 2)) (= main_~d~0 (div (+ .cse4 .cse5) 2)) .cse1 .cse6 (< (div (+ .cse7 (div (+ (- 1) .cse5) 2)) (- 2)) (+ main_~d~0 1)) .cse8)) (and (= .cse4 (+ main_~r~0 .cse3)) .cse9 .cse10 (= main_~q~0 1) (< .cse4 (* 2 .cse3)) .cse11 .cse8) (and .cse9 .cse12 .cse0 .cse1 .cse2 .cse8) (and .cse13 .cse10 .cse0 .cse1 (<= (* main_~p~0 2) (* 4 (div (div .cse7 (- 2)) .cse3))) (= (mod main_~d~0 2) 0) .cse6 .cse11) (and .cse9 (< main_~r~0 main_~d~0) .cse12 .cse13 .cse1 .cse2 (<= .cse3 main_~r~0))))) [2022-04-06 17:10:52,843 INFO L878 garLoopResultBuilder]: At program point L48(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod main_~A~0 4294967296)) (.cse0 (mod main_~B~0 4294967296))) (let ((.cse9 (* 2 .cse0)) (.cse6 (= main_~p~0 1)) (.cse11 (= main_~p~0 2)) (.cse8 (= (+ main_~d~0 main_~r~0) .cse1)) (.cse5 (* (- 1) main_~d~0)) (.cse4 (<= .cse1 2)) (.cse10 (< main_~d~0 (+ .cse1 1))) (.cse7 (<= .cse0 2)) (.cse12 (<= 1 .cse0)) (.cse3 (= (+ main_~r~0 (* main_~q~0 .cse0)) .cse1)) (.cse13 (= main_~q~0 0))) (or (let ((.cse2 (* (- 1) main_~r~0))) (and (= main_~d~0 .cse0) (<= (div (+ (* (- 2) .cse1) (* main_~r~0 2)) (- 4)) (div .cse1 2)) (= main_~d~0 (div (+ .cse1 .cse2) 2)) .cse3 .cse4 (< (div (+ .cse5 (div (+ (- 1) .cse2) 2)) (- 2)) (+ main_~d~0 1)) .cse6)) (and (= .cse1 (+ main_~r~0 .cse0)) .cse7 .cse8 (= main_~q~0 1) (< .cse1 .cse9) .cse10 .cse6) (and .cse7 (= main_~d~0 .cse9) (< main_~r~0 main_~d~0) .cse11 .cse12 .cse3 .cse13 (<= .cse0 main_~r~0)) (and .cse7 (= main_~d~0 (* main_~p~0 .cse0)) .cse12 .cse3 .cse13 .cse6) (and .cse11 .cse8 .cse12 .cse3 (<= (* main_~p~0 2) (* 4 (div (div .cse5 (- 2)) .cse0))) (= (mod main_~d~0 2) 0) .cse4 .cse10) (and .cse7 (<= (div main_~d~0 2) main_~r~0) .cse12 .cse3 .cse13 (= main_~p~0 4) (= main_~d~0 (* (* .cse0 (div main_~p~0 2)) 2)) (<= (mod main_~r~0 4294967296) 2))))) [2022-04-06 17:10:52,843 INFO L878 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse2 (mod main_~A~0 4294967296)) (.cse5 (mod main_~B~0 4294967296))) (let ((.cse0 (= main_~d~0 .cse5)) (.cse1 (<= .cse5 2)) (.cse3 (<= 1 .cse5)) (.cse6 (= (+ main_~r~0 (* main_~q~0 .cse5)) .cse2)) (.cse4 (= main_~p~0 1))) (or (and .cse0 .cse1 (< .cse2 (* main_~d~0 2)) (= (+ main_~d~0 main_~r~0) .cse2) .cse3 (= main_~q~0 1) (< main_~d~0 (+ .cse2 1)) .cse4) (and .cse1 (= main_~d~0 (* main_~p~0 .cse5)) .cse3 .cse6 (= main_~q~0 0) .cse4) (and .cse0 .cse1 .cse3 (= main_~d~0 (div (+ .cse2 (* (- 1) main_~r~0)) 2)) .cse6 (<= .cse2 2) (<= (mod main_~r~0 4294967296) 2) .cse4)))) [2022-04-06 17:10:52,843 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 63) the Hoare annotation is: true [2022-04-06 17:10:52,843 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse4 (mod main_~B~0 4294967296))) (let ((.cse0 (<= .cse4 2)) (.cse1 (<= 1 .cse4)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse4)) (mod main_~A~0 4294967296))) (.cse3 (= main_~q~0 0)) (.cse5 (< (div (+ 2 (* (- 1) main_~r~0)) (- 4294967296)) 1))) (or (and .cse0 (<= (div main_~d~0 2) main_~r~0) (<= 0 main_~d~0) .cse1 .cse2 .cse3 (= (mod main_~p~0 2) 0) (= main_~d~0 (* (* .cse4 (div main_~p~0 2)) 2)) .cse5) (and .cse0 (= main_~d~0 (* main_~p~0 .cse4)) .cse1 .cse2 .cse3 .cse5 (= main_~p~0 1))))) [2022-04-06 17:10:52,843 INFO L878 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse4 (mod main_~B~0 4294967296))) (let ((.cse0 (<= .cse4 2)) (.cse1 (<= 1 .cse4)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse4)) (mod main_~A~0 4294967296))) (.cse3 (= main_~q~0 0)) (.cse5 (< (div (+ 2 (* (- 1) main_~r~0)) (- 4294967296)) 1))) (or (and .cse0 (<= (div main_~d~0 2) main_~r~0) (<= 0 main_~d~0) .cse1 .cse2 .cse3 (= (mod main_~p~0 2) 0) (= main_~d~0 (* (* .cse4 (div main_~p~0 2)) 2)) .cse5) (and .cse0 (= main_~d~0 (* main_~p~0 .cse4)) .cse1 .cse2 .cse3 .cse5 (= main_~p~0 1))))) [2022-04-06 17:10:52,843 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 63) the Hoare annotation is: true [2022-04-06 17:10:52,843 INFO L885 garLoopResultBuilder]: At program point L61(line 61) the Hoare annotation is: true [2022-04-06 17:10:52,844 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 2) [2022-04-06 17:10:52,844 INFO L878 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod main_~B~0 4294967296) 2) (<= (mod main_~A~0 4294967296) 2)) [2022-04-06 17:10:52,844 INFO L885 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2022-04-06 17:10:52,844 INFO L878 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (<= (mod main_~A~0 4294967296) 2) [2022-04-06 17:10:52,844 INFO L878 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse3 (mod main_~B~0 4294967296)) (.cse4 (mod main_~A~0 4294967296))) (let ((.cse8 (= main_~p~0 1)) (.cse10 (= (+ main_~d~0 main_~r~0) .cse4)) (.cse0 (<= 1 .cse3)) (.cse7 (* (- 1) main_~d~0)) (.cse6 (<= .cse4 2)) (.cse11 (< main_~d~0 (+ .cse4 1))) (.cse9 (<= .cse3 2)) (.cse12 (= main_~d~0 (* main_~p~0 .cse3))) (.cse13 (= main_~p~0 2)) (.cse1 (= (+ main_~r~0 (* main_~q~0 .cse3)) .cse4)) (.cse2 (= main_~q~0 0))) (or (and (<= (div main_~d~0 2) main_~r~0) .cse0 .cse1 .cse2 (= main_~p~0 4) (= main_~d~0 (* (* .cse3 (div main_~p~0 2)) 2)) (<= (mod main_~r~0 4294967296) 2)) (let ((.cse5 (* (- 1) main_~r~0))) (and (= main_~d~0 .cse3) (<= (div (+ (* (- 2) .cse4) (* main_~r~0 2)) (- 4)) (div .cse4 2)) (= main_~d~0 (div (+ .cse4 .cse5) 2)) .cse1 .cse6 (< (div (+ .cse7 (div (+ (- 1) .cse5) 2)) (- 2)) (+ main_~d~0 1)) .cse8)) (and (= .cse4 (+ main_~r~0 .cse3)) .cse9 .cse10 (= main_~q~0 1) (< .cse4 (* 2 .cse3)) .cse11 .cse8) (and .cse9 .cse12 .cse0 .cse1 .cse2 .cse8) (and .cse13 .cse10 .cse0 .cse1 (<= (* main_~p~0 2) (* 4 (div (div .cse7 (- 2)) .cse3))) (= (mod main_~d~0 2) 0) .cse6 .cse11) (and .cse9 (< main_~r~0 main_~d~0) .cse12 .cse13 .cse1 .cse2 (<= .cse3 main_~r~0))))) [2022-04-06 17:10:52,844 INFO L878 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse3 (mod main_~B~0 4294967296)) (.cse4 (mod main_~A~0 4294967296))) (let ((.cse8 (= main_~p~0 1)) (.cse10 (= (+ main_~d~0 main_~r~0) .cse4)) (.cse0 (<= 1 .cse3)) (.cse7 (* (- 1) main_~d~0)) (.cse6 (<= .cse4 2)) (.cse11 (< main_~d~0 (+ .cse4 1))) (.cse9 (<= .cse3 2)) (.cse12 (= main_~d~0 (* main_~p~0 .cse3))) (.cse13 (= main_~p~0 2)) (.cse1 (= (+ main_~r~0 (* main_~q~0 .cse3)) .cse4)) (.cse2 (= main_~q~0 0))) (or (and (<= (div main_~d~0 2) main_~r~0) .cse0 .cse1 .cse2 (= main_~p~0 4) (= main_~d~0 (* (* .cse3 (div main_~p~0 2)) 2)) (<= (mod main_~r~0 4294967296) 2)) (let ((.cse5 (* (- 1) main_~r~0))) (and (= main_~d~0 .cse3) (<= (div (+ (* (- 2) .cse4) (* main_~r~0 2)) (- 4)) (div .cse4 2)) (= main_~d~0 (div (+ .cse4 .cse5) 2)) .cse1 .cse6 (< (div (+ .cse7 (div (+ (- 1) .cse5) 2)) (- 2)) (+ main_~d~0 1)) .cse8)) (and (= .cse4 (+ main_~r~0 .cse3)) .cse9 .cse10 (= main_~q~0 1) (< .cse4 (* 2 .cse3)) .cse11 .cse8) (and .cse9 .cse12 .cse0 .cse1 .cse2 .cse8) (and .cse13 .cse10 .cse0 .cse1 (<= (* main_~p~0 2) (* 4 (div (div .cse7 (- 2)) .cse3))) (= (mod main_~d~0 2) 0) .cse6 .cse11) (and .cse9 (< main_~r~0 main_~d~0) .cse12 .cse13 .cse1 .cse2 (<= .cse3 main_~r~0))))) [2022-04-06 17:10:52,844 INFO L878 garLoopResultBuilder]: At program point L39(lines 36 44) the Hoare annotation is: (let ((.cse4 (mod main_~B~0 4294967296))) (let ((.cse0 (<= .cse4 2)) (.cse1 (<= 1 .cse4)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse4)) (mod main_~A~0 4294967296))) (.cse3 (= main_~q~0 0)) (.cse5 (< (div (+ 2 (* (- 1) main_~r~0)) (- 4294967296)) 1))) (or (and .cse0 (<= (div main_~d~0 2) main_~r~0) (<= 0 main_~d~0) .cse1 .cse2 .cse3 (= (mod main_~p~0 2) 0) (= main_~d~0 (* (* .cse4 (div main_~p~0 2)) 2)) .cse5) (and .cse0 (= main_~d~0 (* main_~p~0 .cse4)) .cse1 .cse2 .cse3 .cse5 (= main_~p~0 1))))) [2022-04-06 17:10:52,844 INFO L878 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse4 (mod main_~B~0 4294967296))) (let ((.cse0 (<= .cse4 2)) (.cse1 (<= 1 .cse4)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse4)) (mod main_~A~0 4294967296))) (.cse3 (= main_~q~0 0)) (.cse5 (< (div (+ 2 (* (- 1) main_~r~0)) (- 4294967296)) 1))) (or (and .cse0 (<= (div main_~d~0 2) main_~r~0) (<= 0 main_~d~0) .cse1 .cse2 .cse3 (= (mod main_~p~0 2) 0) (= main_~d~0 (* (* .cse4 (div main_~p~0 2)) 2)) .cse5) (and .cse0 (= main_~d~0 (* main_~p~0 .cse4)) .cse1 .cse2 .cse3 .cse5 (= main_~p~0 1))))) [2022-04-06 17:10:52,844 INFO L878 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse4 (mod main_~B~0 4294967296))) (let ((.cse0 (<= .cse4 2)) (.cse1 (<= 1 .cse4)) (.cse2 (= (+ main_~r~0 (* main_~q~0 .cse4)) (mod main_~A~0 4294967296))) (.cse3 (= main_~q~0 0)) (.cse5 (< (div (+ 2 (* (- 1) main_~r~0)) (- 4294967296)) 1))) (or (and .cse0 (<= (div main_~d~0 2) main_~r~0) (<= 0 main_~d~0) .cse1 .cse2 .cse3 (= (mod main_~p~0 2) 0) (= main_~d~0 (* (* .cse4 (div main_~p~0 2)) 2)) .cse5) (and .cse0 (= main_~d~0 (* main_~p~0 .cse4)) .cse1 .cse2 .cse3 .cse5 (= main_~p~0 1))))) [2022-04-06 17:10:52,845 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-06 17:10:52,845 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 17:10:52,845 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-06 17:10:52,845 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-06 17:10:52,845 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 17:10:52,845 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 17:10:52,845 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-06 17:10:52,845 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-06 17:10:52,845 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57 Int) (aux_mod_v_main_~r~0_BEFORE_CALL_161_94 Int) (aux_div_v_main_~r~0_BEFORE_CALL_161_94 Int) (aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148 Int)) (let ((.cse0 (* 4294967296 aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55)) (.cse1 (* 2 aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57)) (.cse2 (* aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148 4294967296))) (or (not (< 0 (+ .cse0 .cse1 2))) (not (<= (div (+ (* aux_mod_v_main_~r~0_BEFORE_CALL_161_94 (- 2)) (* aux_div_v_main_~r~0_BEFORE_CALL_161_94 (- 4))) (- 4)) aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57)) (not (< .cse2 4294967296)) (not (<= 0 aux_mod_v_main_~r~0_BEFORE_CALL_161_94)) (not (< (+ .cse0 .cse1) (+ aux_mod_v_main_~r~0_BEFORE_CALL_161_94 (* 3 aux_div_v_main_~r~0_BEFORE_CALL_161_94)))) (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (<= .cse1 (+ .cse2 2))))))) [2022-04-06 17:10:52,845 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-04-06 17:10:52,845 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57 Int) (aux_mod_v_main_~r~0_BEFORE_CALL_161_94 Int) (aux_div_v_main_~r~0_BEFORE_CALL_161_94 Int) (aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148 Int)) (let ((.cse0 (* 4294967296 aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55)) (.cse1 (* 2 aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57)) (.cse2 (* aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148 4294967296))) (or (not (< 0 (+ .cse0 .cse1 2))) (not (<= (div (+ (* aux_mod_v_main_~r~0_BEFORE_CALL_161_94 (- 2)) (* aux_div_v_main_~r~0_BEFORE_CALL_161_94 (- 4))) (- 4)) aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57)) (not (< .cse2 4294967296)) (not (<= 0 aux_mod_v_main_~r~0_BEFORE_CALL_161_94)) (not (< (+ .cse0 .cse1) (+ aux_mod_v_main_~r~0_BEFORE_CALL_161_94 (* 3 aux_div_v_main_~r~0_BEFORE_CALL_161_94)))) (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (<= .cse1 (+ .cse2 2))))))) [2022-04-06 17:10:52,846 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57 Int) (aux_mod_v_main_~r~0_BEFORE_CALL_161_94 Int) (aux_div_v_main_~r~0_BEFORE_CALL_161_94 Int) (aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55 Int) (aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148 Int)) (let ((.cse0 (* 4294967296 aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55)) (.cse1 (* 2 aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57)) (.cse2 (* aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148 4294967296))) (or (not (< 0 (+ .cse0 .cse1 2))) (not (<= (div (+ (* aux_mod_v_main_~r~0_BEFORE_CALL_161_94 (- 2)) (* aux_div_v_main_~r~0_BEFORE_CALL_161_94 (- 4))) (- 4)) aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57)) (not (< .cse2 4294967296)) (not (<= 0 aux_mod_v_main_~r~0_BEFORE_CALL_161_94)) (not (< (+ .cse0 .cse1) (+ aux_mod_v_main_~r~0_BEFORE_CALL_161_94 (* 3 aux_div_v_main_~r~0_BEFORE_CALL_161_94)))) (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (<= .cse1 (+ .cse2 2))))))) [2022-04-06 17:10:52,846 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-04-06 17:10:52,848 INFO L719 BasicCegarLoop]: Path program histogram: [12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2] [2022-04-06 17:10:52,849 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 17:10:52,862 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55,QUANTIFIED] [2022-04-06 17:10:52,863 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,863 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,863 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,863 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148,QUANTIFIED] [2022-04-06 17:10:52,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55,QUANTIFIED] [2022-04-06 17:10:52,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,864 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148,QUANTIFIED] [2022-04-06 17:10:52,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 05:10:52 BoogieIcfgContainer [2022-04-06 17:10:52,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 17:10:52,866 INFO L158 Benchmark]: Toolchain (without parser) took 509044.19ms. Allocated memory was 172.0MB in the beginning and 264.2MB in the end (delta: 92.3MB). Free memory was 125.7MB in the beginning and 136.0MB in the end (delta: -10.4MB). Peak memory consumption was 133.0MB. Max. memory is 8.0GB. [2022-04-06 17:10:52,866 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 172.0MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 17:10:52,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.28ms. Allocated memory is still 172.0MB. Free memory was 125.5MB in the beginning and 150.9MB in the end (delta: -25.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 17:10:52,866 INFO L158 Benchmark]: Boogie Preprocessor took 40.49ms. Allocated memory is still 172.0MB. Free memory was 150.9MB in the beginning and 149.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 17:10:52,867 INFO L158 Benchmark]: RCFGBuilder took 300.44ms. Allocated memory is still 172.0MB. Free memory was 149.2MB in the beginning and 138.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 17:10:52,867 INFO L158 Benchmark]: TraceAbstraction took 508447.41ms. Allocated memory was 172.0MB in the beginning and 264.2MB in the end (delta: 92.3MB). Free memory was 138.0MB in the beginning and 136.0MB in the end (delta: 1.9MB). Peak memory consumption was 145.5MB. Max. memory is 8.0GB. [2022-04-06 17:10:52,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 172.0MB. Free memory is still 142.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 249.28ms. Allocated memory is still 172.0MB. Free memory was 125.5MB in the beginning and 150.9MB in the end (delta: -25.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 40.49ms. Allocated memory is still 172.0MB. Free memory was 150.9MB in the beginning and 149.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 300.44ms. Allocated memory is still 172.0MB. Free memory was 149.2MB in the beginning and 138.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 508447.41ms. Allocated memory was 172.0MB in the beginning and 264.2MB in the end (delta: 92.3MB). Free memory was 138.0MB in the beginning and 136.0MB in the end (delta: 1.9MB). Peak memory consumption was 145.5MB. 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[aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148,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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 508.4s, OverallIterations: 16, TraceHistogramMax: 18, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 61.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 298.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 20 mSolverCounterUnknown, 434 SdHoareTripleChecker+Valid, 53.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 346 mSDsluCounter, 2837 SdHoareTripleChecker+Invalid, 52.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 34 IncrementalHoareTripleChecker+Unchecked, 2154 mSDsCounter, 329 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3421 IncrementalHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 329 mSolverCounterUnsat, 683 mSDtfsCounter, 3421 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2070 GetRequests, 1829 SyntacticMatches, 16 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 62.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred in iteration=14, InterpolantAutomatonStates: 147, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 35 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 612 PreInvPairs, 806 NumberOfFragments, 2319 HoareAnnotationTreeSize, 612 FomulaSimplifications, 736 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 38 FomulaSimplificationsInter, 6332 FormulaSimplificationTreeSizeReductionInter, 298.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((B % 4294967296 <= 2 && d / 2 <= r) && 0 <= d) && 1 <= B % 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && q == 0) && p % 2 == 0) && d == B % 4294967296 * (p / 2) * 2) && (2 + -1 * r) / -4294967296 < 1) || ((((((B % 4294967296 <= 2 && d == p * (B % 4294967296)) && 1 <= B % 4294967296) && r + q * (B % 4294967296) == A % 4294967296) && q == 0) && (2 + -1 * r) / -4294967296 < 1) && p == 1) - ProcedureContractResult [Line: 11]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert [2022-04-06 17:10:52,879 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,880 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_main_~r~0_BEFORE_CALL_161_94,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57,QUANTIFIED] [2022-04-06 17:10:52,881 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148,QUANTIFIED] Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || (forall aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57 : int, aux_mod_v_main_~r~0_BEFORE_CALL_161_94 : int, aux_div_v_main_~r~0_BEFORE_CALL_161_94 : int, aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55 : int, aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148 : int :: (((((!(0 < 4294967296 * aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55 + 2 * aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57 + 2) || !((aux_mod_v_main_~r~0_BEFORE_CALL_161_94 * -2 + aux_div_v_main_~r~0_BEFORE_CALL_161_94 * -4) / -4 <= aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57)) || !(aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148 * 4294967296 < 4294967296)) || !(0 <= aux_mod_v_main_~r~0_BEFORE_CALL_161_94)) || !(4294967296 * aux_div_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55 + 2 * aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57 < aux_mod_v_main_~r~0_BEFORE_CALL_161_94 + 3 * aux_div_v_main_~r~0_BEFORE_CALL_161_94)) || !(1 <= \old(cond))) || !(2 * aux_div_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57 <= aux_div_aux_mod_aux_mod_aux_mod_v_main_~A~0_BEFORE_CALL_125_44_55_57_148 * 4294967296 + 2)) RESULT: Ultimate proved your program to be correct! [2022-04-06 17:10:52,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...