/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/egcd3-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 04:42:52,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 04:42:52,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 04:42:52,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 04:42:52,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 04:42:52,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 04:42:52,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 04:42:52,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 04:42:52,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 04:42:52,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 04:42:52,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 04:42:52,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 04:42:52,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 04:42:52,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 04:42:52,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 04:42:52,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 04:42:52,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 04:42:52,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 04:42:52,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 04:42:52,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 04:42:52,449 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 04:42:52,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 04:42:52,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 04:42:52,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 04:42:52,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 04:42:52,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-19 04:42:52,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-19 04:42:52,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-19 04:42:52,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-19 04:42:52,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-19 04:42:52,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-19 04:42:52,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-19 04:42:52,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-19 04:42:52,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-19 04:42:52,461 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-19 04:42:52,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-19 04:42:52,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-19 04:42:52,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-19 04:42:52,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-19 04:42:52,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 04:42:52,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 04:42:52,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 04:42:52,465 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 04:42:52,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 04:42:52,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 04:42:52,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 04:42:52,473 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 04:42:52,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 04:42:52,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 04:42:52,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 04:42:52,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 04:42:52,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 04:42:52,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 04:42:52,474 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 04:42:52,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 04:42:52,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 04:42:52,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 04:42:52,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 04:42:52,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 04:42:52,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 04:42:52,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 04:42:52,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 04:42:52,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 04:42:52,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 04:42:52,475 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 04:42:52,475 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 04:42:52,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 04:42:52,476 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 04:42:52,476 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 04:42:52,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 04:42:52,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 04:42:52,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 04:42:52,685 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 04:42:52,686 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 04:42:52,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-03-19 04:42:52,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3acf60fb5/91e4e41a43814cb399cffa4a150620bc/FLAG1b8bddacc [2022-03-19 04:42:53,114 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 04:42:53,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-03-19 04:42:53,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3acf60fb5/91e4e41a43814cb399cffa4a150620bc/FLAG1b8bddacc [2022-03-19 04:42:53,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3acf60fb5/91e4e41a43814cb399cffa4a150620bc [2022-03-19 04:42:53,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 04:42:53,141 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 04:42:53,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 04:42:53,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 04:42:53,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 04:42:53,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ac1e52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53, skipping insertion in model container [2022-03-19 04:42:53,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 04:42:53,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 04:42:53,294 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/egcd3-ll_valuebound2.c[490,503] [2022-03-19 04:42:53,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 04:42:53,326 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 04:42:53,334 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/egcd3-ll_valuebound2.c[490,503] [2022-03-19 04:42:53,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 04:42:53,360 INFO L208 MainTranslator]: Completed translation [2022-03-19 04:42:53,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53 WrapperNode [2022-03-19 04:42:53,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 04:42:53,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 04:42:53,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 04:42:53,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 04:42:53,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 04:42:53,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 04:42:53,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 04:42:53,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 04:42:53,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53" (1/1) ... [2022-03-19 04:42:53,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 04:42:53,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:42:53,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 04:42:53,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 04:42:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 04:42:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 04:42:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 04:42:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-19 04:42:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 04:42:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 04:42:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 04:42:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 04:42:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 04:42:53,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 04:42:53,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 04:42:53,511 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 04:42:53,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 04:42:53,664 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 04:42:53,668 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 04:42:53,668 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-19 04:42:53,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 04:42:53 BoogieIcfgContainer [2022-03-19 04:42:53,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 04:42:53,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 04:42:53,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 04:42:53,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 04:42:53,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 04:42:53" (1/3) ... [2022-03-19 04:42:53,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b1740f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 04:42:53, skipping insertion in model container [2022-03-19 04:42:53,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 04:42:53" (2/3) ... [2022-03-19 04:42:53,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b1740f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 04:42:53, skipping insertion in model container [2022-03-19 04:42:53,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 04:42:53" (3/3) ... [2022-03-19 04:42:53,685 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2022-03-19 04:42:53,688 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 04:42:53,688 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 04:42:53,738 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 04:42:53,742 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 04:42:53,742 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 04:42:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-19 04:42:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-19 04:42:53,772 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:42:53,772 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 04:42:53,773 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:42:53,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:42:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1237885594, now seen corresponding path program 1 times [2022-03-19 04:42:53,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:53,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1333126226] [2022-03-19 04:42:53,809 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:42:53,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1237885594, now seen corresponding path program 2 times [2022-03-19 04:42:53,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:42:53,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931572334] [2022-03-19 04:42:53,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:42:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:42:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 04:42:53,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 04:42:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 04:42:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 04:42:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 04:42:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-19 04:42:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 04:42:53,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-19 04:42:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 04:42:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-19 04:42:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 04:42:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-19 04:42:53,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:42:53,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931572334] [2022-03-19 04:42:53,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931572334] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:53,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:53,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 04:42:53,985 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:42:53,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1333126226] [2022-03-19 04:42:53,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1333126226] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:53,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:53,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 04:42:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450486169] [2022-03-19 04:42:53,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:42:53,988 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 04:42:53,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:54,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 04:42:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 04:42:54,006 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 04:42:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:42:54,103 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2022-03-19 04:42:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 04:42:54,105 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-19 04:42:54,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:42:54,110 INFO L225 Difference]: With dead ends: 73 [2022-03-19 04:42:54,110 INFO L226 Difference]: Without dead ends: 35 [2022-03-19 04:42:54,113 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 04:42:54,118 INFO L912 BasicCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:42:54,119 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:42:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-19 04:42:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-19 04:42:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-19 04:42:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-03-19 04:42:54,150 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 33 [2022-03-19 04:42:54,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:42:54,150 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-03-19 04:42:54,151 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 04:42:54,151 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-03-19 04:42:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-19 04:42:54,153 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:42:54,153 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 04:42:54,154 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 04:42:54,155 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:42:54,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:42:54,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1569470122, now seen corresponding path program 1 times [2022-03-19 04:42:54,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:54,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1638999136] [2022-03-19 04:42:54,158 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:42:54,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1569470122, now seen corresponding path program 2 times [2022-03-19 04:42:54,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:42:54,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954870578] [2022-03-19 04:42:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:42:54,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:42:54,193 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:42:54,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [382634371] [2022-03-19 04:42:54,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:42:54,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:42:54,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:42:54,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 04:42:54,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-19 04:42:54,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:42:54,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-19 04:42:54,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:42:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-19 04:42:54,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 04:42:54,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:42:54,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954870578] [2022-03-19 04:42:54,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:42:54,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382634371] [2022-03-19 04:42:54,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382634371] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:54,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:54,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 04:42:54,487 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:42:54,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1638999136] [2022-03-19 04:42:54,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1638999136] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:54,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:54,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 04:42:54,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624726706] [2022-03-19 04:42:54,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:42:54,488 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 04:42:54,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:54,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 04:42:54,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-19 04:42:54,489 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 04:42:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:42:54,620 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2022-03-19 04:42:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 04:42:54,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-03-19 04:42:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:42:54,623 INFO L225 Difference]: With dead ends: 54 [2022-03-19 04:42:54,623 INFO L226 Difference]: Without dead ends: 51 [2022-03-19 04:42:54,625 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-19 04:42:54,625 INFO L912 BasicCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:42:54,628 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 197 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:42:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-19 04:42:54,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-03-19 04:42:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-19 04:42:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-03-19 04:42:54,644 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 34 [2022-03-19 04:42:54,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:42:54,644 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-03-19 04:42:54,644 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 04:42:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-03-19 04:42:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-19 04:42:54,645 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:42:54,645 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 04:42:54,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-19 04:42:54,866 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:54,867 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:42:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:42:54,867 INFO L85 PathProgramCache]: Analyzing trace with hash 584996456, now seen corresponding path program 1 times [2022-03-19 04:42:54,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:54,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1342107305] [2022-03-19 04:42:54,868 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:42:54,868 INFO L85 PathProgramCache]: Analyzing trace with hash 584996456, now seen corresponding path program 2 times [2022-03-19 04:42:54,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:42:54,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564925850] [2022-03-19 04:42:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:42:54,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:42:54,888 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:42:54,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [719606985] [2022-03-19 04:42:54,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:42:54,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:54,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:42:54,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:42:54,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 04:42:54,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:42:54,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:42:54,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-19 04:42:54,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:42:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-19 04:42:55,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:42:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-19 04:42:55,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:42:55,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564925850] [2022-03-19 04:42:55,165 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:42:55,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719606985] [2022-03-19 04:42:55,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719606985] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:42:55,165 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:42:55,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-19 04:42:55,166 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:42:55,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1342107305] [2022-03-19 04:42:55,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1342107305] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:55,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:55,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 04:42:55,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084063117] [2022-03-19 04:42:55,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:42:55,167 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 04:42:55,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:55,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 04:42:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-19 04:42:55,168 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 04:42:55,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:42:55,285 INFO L93 Difference]: Finished difference Result 103 states and 143 transitions. [2022-03-19 04:42:55,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 04:42:55,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-03-19 04:42:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:42:55,287 INFO L225 Difference]: With dead ends: 103 [2022-03-19 04:42:55,287 INFO L226 Difference]: Without dead ends: 96 [2022-03-19 04:42:55,288 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-19 04:42:55,288 INFO L912 BasicCegarLoop]: 51 mSDtfsCounter, 58 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:42:55,288 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 288 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:42:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-03-19 04:42:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2022-03-19 04:42:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 48 states have internal predecessors, (59), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-19 04:42:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2022-03-19 04:42:55,302 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 39 [2022-03-19 04:42:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:42:55,302 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2022-03-19 04:42:55,302 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 04:42:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2022-03-19 04:42:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-19 04:42:55,303 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:42:55,303 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1] [2022-03-19 04:42:55,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 04:42:55,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-19 04:42:55,517 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:42:55,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:42:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash -974923140, now seen corresponding path program 1 times [2022-03-19 04:42:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:55,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1704470495] [2022-03-19 04:42:55,528 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:42:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash -974923140, now seen corresponding path program 2 times [2022-03-19 04:42:55,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:42:55,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469857033] [2022-03-19 04:42:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:42:55,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:42:55,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:42:55,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342242917] [2022-03-19 04:42:55,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:42:55,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:55,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:42:55,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:42:55,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 04:42:55,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:42:55,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:42:55,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-19 04:42:55,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:42:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-19 04:42:55,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:42:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-19 04:42:56,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:42:56,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469857033] [2022-03-19 04:42:56,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:42:56,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342242917] [2022-03-19 04:42:56,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342242917] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:42:56,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:42:56,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 18 [2022-03-19 04:42:56,122 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:42:56,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1704470495] [2022-03-19 04:42:56,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1704470495] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:56,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:56,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 04:42:56,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064292457] [2022-03-19 04:42:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:42:56,123 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 04:42:56,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:56,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 04:42:56,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-03-19 04:42:56,124 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 04:42:56,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:42:56,376 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2022-03-19 04:42:56,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 04:42:56,377 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2022-03-19 04:42:56,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:42:56,380 INFO L225 Difference]: With dead ends: 112 [2022-03-19 04:42:56,380 INFO L226 Difference]: Without dead ends: 110 [2022-03-19 04:42:56,381 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-03-19 04:42:56,383 INFO L912 BasicCegarLoop]: 52 mSDtfsCounter, 63 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:42:56,383 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 389 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:42:56,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-03-19 04:42:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 93. [2022-03-19 04:42:56,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 63 states have (on average 1.2380952380952381) internal successors, (78), 64 states have internal predecessors, (78), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-03-19 04:42:56,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 122 transitions. [2022-03-19 04:42:56,410 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 122 transitions. Word has length 42 [2022-03-19 04:42:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:42:56,411 INFO L478 AbstractCegarLoop]: Abstraction has 93 states and 122 transitions. [2022-03-19 04:42:56,412 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 10 states have internal predecessors, (24), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-19 04:42:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 122 transitions. [2022-03-19 04:42:56,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-19 04:42:56,415 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:42:56,416 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-03-19 04:42:56,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-19 04:42:56,631 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:56,631 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:42:56,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:42:56,632 INFO L85 PathProgramCache]: Analyzing trace with hash 81990170, now seen corresponding path program 1 times [2022-03-19 04:42:56,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:56,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1987579069] [2022-03-19 04:42:56,632 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:42:56,633 INFO L85 PathProgramCache]: Analyzing trace with hash 81990170, now seen corresponding path program 2 times [2022-03-19 04:42:56,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:42:56,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381269037] [2022-03-19 04:42:56,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:42:56,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:42:56,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:42:56,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509308384] [2022-03-19 04:42:56,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:42:56,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:56,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:42:56,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:42:56,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-19 04:42:56,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:42:56,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:42:56,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-19 04:42:56,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:42:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-03-19 04:42:56,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:42:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-19 04:42:56,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:42:56,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381269037] [2022-03-19 04:42:56,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:42:56,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509308384] [2022-03-19 04:42:56,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509308384] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-19 04:42:56,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 04:42:56,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-19 04:42:56,890 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:42:56,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1987579069] [2022-03-19 04:42:56,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1987579069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:56,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:56,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 04:42:56,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171103132] [2022-03-19 04:42:56,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:42:56,891 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 04:42:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:56,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 04:42:56,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-03-19 04:42:56,892 INFO L87 Difference]: Start difference. First operand 93 states and 122 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 04:42:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:42:56,936 INFO L93 Difference]: Finished difference Result 130 states and 179 transitions. [2022-03-19 04:42:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 04:42:56,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 47 [2022-03-19 04:42:56,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:42:56,938 INFO L225 Difference]: With dead ends: 130 [2022-03-19 04:42:56,938 INFO L226 Difference]: Without dead ends: 128 [2022-03-19 04:42:56,938 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-03-19 04:42:56,939 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 04:42:56,939 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 150 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 04:42:56,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-03-19 04:42:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2022-03-19 04:42:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 76 states have (on average 1.263157894736842) internal successors, (96), 77 states have internal predecessors, (96), 39 states have call successors, (39), 8 states have call predecessors, (39), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-03-19 04:42:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 172 transitions. [2022-03-19 04:42:56,955 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 172 transitions. Word has length 47 [2022-03-19 04:42:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:42:56,956 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 172 transitions. [2022-03-19 04:42:56,956 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-19 04:42:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 172 transitions. [2022-03-19 04:42:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-19 04:42:56,956 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:42:56,957 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1] [2022-03-19 04:42:56,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-19 04:42:57,171 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:57,172 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:42:57,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:42:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1524769911, now seen corresponding path program 1 times [2022-03-19 04:42:57,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:57,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1830374247] [2022-03-19 04:42:57,172 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:42:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1524769911, now seen corresponding path program 2 times [2022-03-19 04:42:57,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:42:57,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502135875] [2022-03-19 04:42:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:42:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:42:57,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:42:57,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558043281] [2022-03-19 04:42:57,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:42:57,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:57,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:42:57,189 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:42:57,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-19 04:42:57,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:42:57,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:42:57,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-19 04:42:57,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:42:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-19 04:42:57,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:42:57,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-19 04:42:57,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:42:57,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502135875] [2022-03-19 04:42:57,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:42:57,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558043281] [2022-03-19 04:42:57,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558043281] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:42:57,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:42:57,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 17 [2022-03-19 04:42:57,752 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:42:57,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1830374247] [2022-03-19 04:42:57,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1830374247] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:57,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:57,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 04:42:57,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465678452] [2022-03-19 04:42:57,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:42:57,753 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 04:42:57,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:57,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 04:42:57,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-03-19 04:42:57,754 INFO L87 Difference]: Start difference. First operand 123 states and 172 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-03-19 04:42:57,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:42:57,961 INFO L93 Difference]: Finished difference Result 137 states and 184 transitions. [2022-03-19 04:42:57,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-19 04:42:57,961 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 47 [2022-03-19 04:42:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:42:57,963 INFO L225 Difference]: With dead ends: 137 [2022-03-19 04:42:57,963 INFO L226 Difference]: Without dead ends: 135 [2022-03-19 04:42:57,963 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-03-19 04:42:57,964 INFO L912 BasicCegarLoop]: 47 mSDtfsCounter, 66 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:42:57,965 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 305 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:42:57,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-03-19 04:42:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2022-03-19 04:42:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 83 states have internal predecessors, (102), 39 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-03-19 04:42:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 178 transitions. [2022-03-19 04:42:57,985 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 178 transitions. Word has length 47 [2022-03-19 04:42:57,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:42:57,985 INFO L478 AbstractCegarLoop]: Abstraction has 131 states and 178 transitions. [2022-03-19 04:42:57,985 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-03-19 04:42:57,985 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 178 transitions. [2022-03-19 04:42:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-19 04:42:57,986 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:42:57,986 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 04:42:58,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-19 04:42:58,199 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:58,200 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:42:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:42:58,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1836145722, now seen corresponding path program 3 times [2022-03-19 04:42:58,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:58,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1731329264] [2022-03-19 04:42:58,201 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:42:58,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1836145722, now seen corresponding path program 4 times [2022-03-19 04:42:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:42:58,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903855618] [2022-03-19 04:42:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:42:58,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:42:58,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:42:58,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078201844] [2022-03-19 04:42:58,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 04:42:58,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:58,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:42:58,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:42:58,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-19 04:42:58,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 04:42:58,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:42:58,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 04:42:58,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:42:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-19 04:42:58,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 04:42:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:42:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903855618] [2022-03-19 04:42:58,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:42:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078201844] [2022-03-19 04:42:58,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078201844] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:58,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:58,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 04:42:58,320 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:42:58,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1731329264] [2022-03-19 04:42:58,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1731329264] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:58,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:58,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 04:42:58,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245494009] [2022-03-19 04:42:58,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:42:58,320 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 04:42:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 04:42:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 04:42:58,321 INFO L87 Difference]: Start difference. First operand 131 states and 178 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 04:42:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:42:58,374 INFO L93 Difference]: Finished difference Result 170 states and 230 transitions. [2022-03-19 04:42:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 04:42:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-03-19 04:42:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:42:58,375 INFO L225 Difference]: With dead ends: 170 [2022-03-19 04:42:58,376 INFO L226 Difference]: Without dead ends: 114 [2022-03-19 04:42:58,376 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-19 04:42:58,377 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 04:42:58,377 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 180 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 04:42:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-03-19 04:42:58,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-03-19 04:42:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-03-19 04:42:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2022-03-19 04:42:58,387 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 47 [2022-03-19 04:42:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:42:58,387 INFO L478 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2022-03-19 04:42:58,387 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-19 04:42:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2022-03-19 04:42:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-19 04:42:58,388 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:42:58,388 INFO L500 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-03-19 04:42:58,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-19 04:42:58,604 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:58,604 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:42:58,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:42:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1952108775, now seen corresponding path program 1 times [2022-03-19 04:42:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:58,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [352917146] [2022-03-19 04:42:58,605 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:42:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1952108775, now seen corresponding path program 2 times [2022-03-19 04:42:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:42:58,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875113987] [2022-03-19 04:42:58,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:42:58,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:42:58,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:42:58,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831546181] [2022-03-19 04:42:58,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:42:58,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:58,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:42:58,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:42:58,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-19 04:42:58,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:42:58,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:42:58,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-19 04:42:58,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:42:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-19 04:42:58,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 04:42:58,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:42:58,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875113987] [2022-03-19 04:42:58,743 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:42:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831546181] [2022-03-19 04:42:58,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831546181] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:58,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:58,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 04:42:58,744 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:42:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [352917146] [2022-03-19 04:42:58,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [352917146] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:42:58,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:42:58,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 04:42:58,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197236743] [2022-03-19 04:42:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:42:58,745 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 04:42:58,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 04:42:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 04:42:58,745 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 04:42:58,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:42:58,790 INFO L93 Difference]: Finished difference Result 158 states and 221 transitions. [2022-03-19 04:42:58,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 04:42:58,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2022-03-19 04:42:58,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:42:58,791 INFO L225 Difference]: With dead ends: 158 [2022-03-19 04:42:58,791 INFO L226 Difference]: Without dead ends: 156 [2022-03-19 04:42:58,791 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 04:42:58,792 INFO L912 BasicCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 04:42:58,792 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 162 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 04:42:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-03-19 04:42:58,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 140. [2022-03-19 04:42:58,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 74 states have (on average 1.162162162162162) internal successors, (86), 81 states have internal predecessors, (86), 55 states have call successors, (55), 11 states have call predecessors, (55), 10 states have return successors, (53), 47 states have call predecessors, (53), 53 states have call successors, (53) [2022-03-19 04:42:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2022-03-19 04:42:58,807 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 52 [2022-03-19 04:42:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:42:58,807 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2022-03-19 04:42:58,807 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-19 04:42:58,808 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2022-03-19 04:42:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-19 04:42:58,808 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:42:58,808 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 04:42:58,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-19 04:42:59,025 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:59,025 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:42:59,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:42:59,025 INFO L85 PathProgramCache]: Analyzing trace with hash 188363668, now seen corresponding path program 1 times [2022-03-19 04:42:59,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:42:59,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1993515434] [2022-03-19 04:42:59,026 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:42:59,026 INFO L85 PathProgramCache]: Analyzing trace with hash 188363668, now seen corresponding path program 2 times [2022-03-19 04:42:59,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:42:59,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706960862] [2022-03-19 04:42:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:42:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:42:59,034 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:42:59,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442569481] [2022-03-19 04:42:59,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:42:59,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:42:59,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:42:59,036 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:42:59,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-19 04:42:59,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:42:59,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:42:59,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-19 04:42:59,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:42:59,576 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-19 04:42:59,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:43:00,224 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-19 04:43:00,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:43:00,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706960862] [2022-03-19 04:43:00,224 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:43:00,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442569481] [2022-03-19 04:43:00,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442569481] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:43:00,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:43:00,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2022-03-19 04:43:00,225 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:43:00,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1993515434] [2022-03-19 04:43:00,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1993515434] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:43:00,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:43:00,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 04:43:00,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306586856] [2022-03-19 04:43:00,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:43:00,225 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 04:43:00,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 04:43:00,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-19 04:43:00,226 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 04:43:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:43:00,555 INFO L93 Difference]: Finished difference Result 200 states and 283 transitions. [2022-03-19 04:43:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 04:43:00,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 64 [2022-03-19 04:43:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:43:00,558 INFO L225 Difference]: With dead ends: 200 [2022-03-19 04:43:00,558 INFO L226 Difference]: Without dead ends: 197 [2022-03-19 04:43:00,559 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-03-19 04:43:00,559 INFO L912 BasicCegarLoop]: 45 mSDtfsCounter, 48 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 04:43:00,559 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 423 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 04:43:00,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-03-19 04:43:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 193. [2022-03-19 04:43:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 110 states have internal predecessors, (119), 79 states have call successors, (79), 13 states have call predecessors, (79), 12 states have return successors, (77), 69 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-19 04:43:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 275 transitions. [2022-03-19 04:43:00,580 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 275 transitions. Word has length 64 [2022-03-19 04:43:00,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:43:00,581 INFO L478 AbstractCegarLoop]: Abstraction has 193 states and 275 transitions. [2022-03-19 04:43:00,581 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 04:43:00,581 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 275 transitions. [2022-03-19 04:43:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-03-19 04:43:00,582 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:43:00,582 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 04:43:00,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-19 04:43:00,795 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,SelfDestructingSolverStorable8 [2022-03-19 04:43:00,796 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:43:00,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:43:00,796 INFO L85 PathProgramCache]: Analyzing trace with hash -368004398, now seen corresponding path program 3 times [2022-03-19 04:43:00,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:00,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [266884226] [2022-03-19 04:43:00,797 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:43:00,797 INFO L85 PathProgramCache]: Analyzing trace with hash -368004398, now seen corresponding path program 4 times [2022-03-19 04:43:00,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:43:00,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741575963] [2022-03-19 04:43:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:43:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:43:00,804 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:43:00,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288170638] [2022-03-19 04:43:00,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 04:43:00,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:43:00,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:43:00,806 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) [2022-03-19 04:43:00,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-19 04:43:00,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 04:43:00,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:43:00,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-19 04:43:00,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:43:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-19 04:43:00,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:43:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-19 04:43:01,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:43:01,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741575963] [2022-03-19 04:43:01,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:43:01,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288170638] [2022-03-19 04:43:01,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288170638] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:43:01,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:43:01,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-03-19 04:43:01,049 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:43:01,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [266884226] [2022-03-19 04:43:01,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [266884226] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:43:01,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:43:01,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 04:43:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039960705] [2022-03-19 04:43:01,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:43:01,050 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 04:43:01,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:01,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 04:43:01,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-03-19 04:43:01,050 INFO L87 Difference]: Start difference. First operand 193 states and 275 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 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) [2022-03-19 04:43:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:43:01,299 INFO L93 Difference]: Finished difference Result 288 states and 424 transitions. [2022-03-19 04:43:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 04:43:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 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 69 [2022-03-19 04:43:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:43:01,302 INFO L225 Difference]: With dead ends: 288 [2022-03-19 04:43:01,302 INFO L226 Difference]: Without dead ends: 281 [2022-03-19 04:43:01,303 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-03-19 04:43:01,303 INFO L912 BasicCegarLoop]: 87 mSDtfsCounter, 48 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:43:01,303 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 394 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:43:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-03-19 04:43:01,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 208. [2022-03-19 04:43:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 116 states have (on average 1.206896551724138) internal successors, (140), 122 states have internal predecessors, (140), 79 states have call successors, (79), 13 states have call predecessors, (79), 12 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-19 04:43:01,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 296 transitions. [2022-03-19 04:43:01,330 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 296 transitions. Word has length 69 [2022-03-19 04:43:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:43:01,330 INFO L478 AbstractCegarLoop]: Abstraction has 208 states and 296 transitions. [2022-03-19 04:43:01,330 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 3 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) [2022-03-19 04:43:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 296 transitions. [2022-03-19 04:43:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-19 04:43:01,331 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:43:01,331 INFO L500 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 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, 1] [2022-03-19 04:43:01,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-19 04:43:01,550 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-19 04:43:01,550 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:43:01,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:43:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash -298771846, now seen corresponding path program 1 times [2022-03-19 04:43:01,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:01,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [220269530] [2022-03-19 04:43:01,551 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:43:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash -298771846, now seen corresponding path program 2 times [2022-03-19 04:43:01,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:43:01,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865487991] [2022-03-19 04:43:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:43:01,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:43:01,558 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:43:01,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605599987] [2022-03-19 04:43:01,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:43:01,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:43:01,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:43:01,581 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) [2022-03-19 04:43:01,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-19 04:43:01,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:43:01,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:43:01,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-19 04:43:01,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:43:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-03-19 04:43:01,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:43:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-03-19 04:43:02,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:43:02,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865487991] [2022-03-19 04:43:02,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:43:02,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605599987] [2022-03-19 04:43:02,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605599987] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-19 04:43:02,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-19 04:43:02,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 14 [2022-03-19 04:43:02,112 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:43:02,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [220269530] [2022-03-19 04:43:02,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [220269530] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:43:02,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:43:02,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 04:43:02,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608672274] [2022-03-19 04:43:02,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:43:02,113 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-19 04:43:02,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-19 04:43:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-03-19 04:43:02,113 INFO L87 Difference]: Start difference. First operand 208 states and 296 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-19 04:43:02,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:43:02,164 INFO L93 Difference]: Finished difference Result 214 states and 301 transitions. [2022-03-19 04:43:02,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 04:43:02,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2022-03-19 04:43:02,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:43:02,165 INFO L225 Difference]: With dead ends: 214 [2022-03-19 04:43:02,165 INFO L226 Difference]: Without dead ends: 212 [2022-03-19 04:43:02,166 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-03-19 04:43:02,166 INFO L912 BasicCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 04:43:02,166 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 145 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 04:43:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-03-19 04:43:02,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-03-19 04:43:02,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 125 states have internal predecessors, (143), 79 states have call successors, (79), 14 states have call predecessors, (79), 13 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-19 04:43:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 299 transitions. [2022-03-19 04:43:02,190 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 299 transitions. Word has length 74 [2022-03-19 04:43:02,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:43:02,190 INFO L478 AbstractCegarLoop]: Abstraction has 212 states and 299 transitions. [2022-03-19 04:43:02,190 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-03-19 04:43:02,190 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 299 transitions. [2022-03-19 04:43:02,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-19 04:43:02,191 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:43:02,191 INFO L500 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 04:43:02,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-19 04:43:02,408 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,SelfDestructingSolverStorable10 [2022-03-19 04:43:02,408 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:43:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:43:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2089538094, now seen corresponding path program 1 times [2022-03-19 04:43:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:02,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1990577433] [2022-03-19 04:43:02,409 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:43:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2089538094, now seen corresponding path program 2 times [2022-03-19 04:43:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:43:02,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101539353] [2022-03-19 04:43:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:43:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:43:02,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:43:02,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1987350232] [2022-03-19 04:43:02,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:43:02,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:43:02,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:43:02,434 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) [2022-03-19 04:43:02,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-19 04:43:02,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:43:02,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:43:02,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-19 04:43:02,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:43:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-03-19 04:43:02,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:43:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-03-19 04:43:02,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:43:02,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101539353] [2022-03-19 04:43:02,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:43:02,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987350232] [2022-03-19 04:43:02,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987350232] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:43:02,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:43:02,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-03-19 04:43:02,801 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:43:02,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1990577433] [2022-03-19 04:43:02,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1990577433] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:43:02,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:43:02,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-03-19 04:43:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478120774] [2022-03-19 04:43:02,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:43:02,802 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-19 04:43:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-19 04:43:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-03-19 04:43:02,802 INFO L87 Difference]: Start difference. First operand 212 states and 299 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 04:43:02,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:43:02,995 INFO L93 Difference]: Finished difference Result 306 states and 427 transitions. [2022-03-19 04:43:02,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 04:43:02,995 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 72 [2022-03-19 04:43:02,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:43:02,997 INFO L225 Difference]: With dead ends: 306 [2022-03-19 04:43:02,997 INFO L226 Difference]: Without dead ends: 204 [2022-03-19 04:43:02,997 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-03-19 04:43:02,998 INFO L912 BasicCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:43:02,998 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 332 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:43:02,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-03-19 04:43:03,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 200. [2022-03-19 04:43:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 113 states have internal predecessors, (125), 79 states have call successors, (79), 14 states have call predecessors, (79), 13 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-19 04:43:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 281 transitions. [2022-03-19 04:43:03,022 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 281 transitions. Word has length 72 [2022-03-19 04:43:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:43:03,022 INFO L478 AbstractCegarLoop]: Abstraction has 200 states and 281 transitions. [2022-03-19 04:43:03,022 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-03-19 04:43:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 281 transitions. [2022-03-19 04:43:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-19 04:43:03,023 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:43:03,023 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2022-03-19 04:43:03,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-19 04:43:03,239 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,SelfDestructingSolverStorable11 [2022-03-19 04:43:03,239 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:43:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:43:03,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1679616651, now seen corresponding path program 1 times [2022-03-19 04:43:03,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:03,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1116081421] [2022-03-19 04:43:03,240 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:43:03,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1679616651, now seen corresponding path program 2 times [2022-03-19 04:43:03,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:43:03,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398231516] [2022-03-19 04:43:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:43:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:43:03,248 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:43:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689072521] [2022-03-19 04:43:03,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:43:03,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:43:03,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:43:03,249 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) [2022-03-19 04:43:03,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-19 04:43:03,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:43:03,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:43:03,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 63 conjunts are in the unsatisfiable core [2022-03-19 04:43:03,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:43:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-03-19 04:43:04,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:43:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-03-19 04:43:08,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:43:08,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398231516] [2022-03-19 04:43:08,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:43:08,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689072521] [2022-03-19 04:43:08,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689072521] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:43:08,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:43:08,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 27 [2022-03-19 04:43:08,022 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:43:08,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1116081421] [2022-03-19 04:43:08,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1116081421] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:43:08,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:43:08,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 04:43:08,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704174084] [2022-03-19 04:43:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:43:08,023 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 04:43:08,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 04:43:08,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-03-19 04:43:08,023 INFO L87 Difference]: Start difference. First operand 200 states and 281 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-19 04:43:08,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:43:08,577 INFO L93 Difference]: Finished difference Result 285 states and 397 transitions. [2022-03-19 04:43:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 04:43:08,578 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-03-19 04:43:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:43:08,580 INFO L225 Difference]: With dead ends: 285 [2022-03-19 04:43:08,580 INFO L226 Difference]: Without dead ends: 231 [2022-03-19 04:43:08,581 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2022-03-19 04:43:08,582 INFO L912 BasicCegarLoop]: 35 mSDtfsCounter, 59 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 04:43:08,582 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 334 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 04:43:08,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-03-19 04:43:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2022-03-19 04:43:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 121 states have (on average 1.165289256198347) internal successors, (141), 128 states have internal predecessors, (141), 91 states have call successors, (91), 16 states have call predecessors, (91), 15 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2022-03-19 04:43:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 321 transitions. [2022-03-19 04:43:08,621 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 321 transitions. Word has length 86 [2022-03-19 04:43:08,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:43:08,622 INFO L478 AbstractCegarLoop]: Abstraction has 228 states and 321 transitions. [2022-03-19 04:43:08,622 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-19 04:43:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 321 transitions. [2022-03-19 04:43:08,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-19 04:43:08,623 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:43:08,623 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 2, 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, 1] [2022-03-19 04:43:08,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-19 04:43:08,842 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,SelfDestructingSolverStorable12 [2022-03-19 04:43:08,843 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:43:08,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:43:08,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1654964248, now seen corresponding path program 5 times [2022-03-19 04:43:08,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:08,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2101600967] [2022-03-19 04:43:08,844 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:43:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1654964248, now seen corresponding path program 6 times [2022-03-19 04:43:08,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:43:08,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659702606] [2022-03-19 04:43:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:43:08,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:43:08,866 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:43:08,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741382125] [2022-03-19 04:43:08,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 04:43:08,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:43:08,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:43:08,871 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) [2022-03-19 04:43:08,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-19 04:43:08,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-19 04:43:08,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:43:08,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-19 04:43:08,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:43:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-03-19 04:43:09,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:43:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-03-19 04:43:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:43:09,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659702606] [2022-03-19 04:43:09,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:43:09,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741382125] [2022-03-19 04:43:09,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741382125] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:43:09,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:43:09,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-19 04:43:09,160 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:43:09,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2101600967] [2022-03-19 04:43:09,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2101600967] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:43:09,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:43:09,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 04:43:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128208205] [2022-03-19 04:43:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:43:09,161 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 04:43:09,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 04:43:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-19 04:43:09,162 INFO L87 Difference]: Start difference. First operand 228 states and 321 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-19 04:43:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:43:09,252 INFO L93 Difference]: Finished difference Result 361 states and 505 transitions. [2022-03-19 04:43:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 04:43:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2022-03-19 04:43:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:43:09,254 INFO L225 Difference]: With dead ends: 361 [2022-03-19 04:43:09,254 INFO L226 Difference]: Without dead ends: 238 [2022-03-19 04:43:09,254 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-19 04:43:09,254 INFO L912 BasicCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:43:09,255 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 278 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:43:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-03-19 04:43:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2022-03-19 04:43:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 127 states have internal predecessors, (149), 83 states have call successors, (83), 16 states have call predecessors, (83), 15 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-03-19 04:43:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 313 transitions. [2022-03-19 04:43:09,283 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 313 transitions. Word has length 89 [2022-03-19 04:43:09,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:43:09,283 INFO L478 AbstractCegarLoop]: Abstraction has 225 states and 313 transitions. [2022-03-19 04:43:09,283 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-19 04:43:09,283 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 313 transitions. [2022-03-19 04:43:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-19 04:43:09,284 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:43:09,284 INFO L500 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 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, 1, 1] [2022-03-19 04:43:09,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-03-19 04:43:09,490 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,SelfDestructingSolverStorable13 [2022-03-19 04:43:09,490 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:43:09,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:43:09,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1455197645, now seen corresponding path program 3 times [2022-03-19 04:43:09,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:09,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [269687676] [2022-03-19 04:43:09,492 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:43:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1455197645, now seen corresponding path program 4 times [2022-03-19 04:43:09,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:43:09,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354543050] [2022-03-19 04:43:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:43:09,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:43:09,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:43:09,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847195855] [2022-03-19 04:43:09,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 04:43:09,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:43:09,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:43:09,508 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:43:09,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-19 04:43:09,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 04:43:09,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:43:09,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 88 conjunts are in the unsatisfiable core [2022-03-19 04:43:09,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:43:10,962 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-19 04:43:10,965 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-19 04:43:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 63 proven. 29 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-03-19 04:43:11,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:43:28,437 WARN L232 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 3 DAG size of output: 1 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-03-19 04:43:36,457 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~p~0 c_main_~x~0)) (.cse1 (* c_main_~r~0 c_main_~y~0)) (.cse2 (* c_main_~q~0 c_main_~x~0)) (.cse3 (* c_main_~s~0 c_main_~y~0))) (or (= (+ c_main_~b~0 .cse0 .cse1) (+ (* c_main_~q~0 c_main_~d~0 c_main_~x~0) .cse2 (* c_main_~q~0 c_main_~x~0 c_main_~k~0) .cse3 (* c_main_~s~0 c_main_~d~0 c_main_~y~0) (* c_main_~s~0 c_main_~y~0 c_main_~k~0))) (not (= c_main_~v~0 (* c_main_~b~0 c_main_~d~0))) (not (= (+ .cse0 .cse1) c_main_~a~0)) (not (= (+ (* c_main_~b~0 c_main_~k~0) c_main_~c~0) c_main_~a~0)) (not (= c_main_~v~0 c_main_~c~0)) (not (= c_main_~b~0 (+ .cse2 .cse3))))) is different from true [2022-03-19 04:43:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 74 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-03-19 04:43:37,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:43:37,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354543050] [2022-03-19 04:43:37,407 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:43:37,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847195855] [2022-03-19 04:43:37,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847195855] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:43:37,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:43:37,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 33 [2022-03-19 04:43:37,408 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:43:37,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [269687676] [2022-03-19 04:43:37,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [269687676] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:43:37,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:43:37,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-19 04:43:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757383684] [2022-03-19 04:43:37,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:43:37,408 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-19 04:43:37,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-19 04:43:37,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=837, Unknown=1, NotChecked=60, Total=1056 [2022-03-19 04:43:37,409 INFO L87 Difference]: Start difference. First operand 225 states and 313 transitions. Second operand has 23 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-19 04:43:38,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:43:38,500 INFO L93 Difference]: Finished difference Result 328 states and 448 transitions. [2022-03-19 04:43:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-19 04:43:38,501 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 91 [2022-03-19 04:43:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:43:38,502 INFO L225 Difference]: With dead ends: 328 [2022-03-19 04:43:38,502 INFO L226 Difference]: Without dead ends: 270 [2022-03-19 04:43:38,503 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=231, Invalid=1332, Unknown=1, NotChecked=76, Total=1640 [2022-03-19 04:43:38,503 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 82 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-19 04:43:38,503 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 517 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-19 04:43:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-03-19 04:43:38,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 258. [2022-03-19 04:43:38,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 144 states have (on average 1.1805555555555556) internal successors, (170), 145 states have internal predecessors, (170), 95 states have call successors, (95), 19 states have call predecessors, (95), 18 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-03-19 04:43:38,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 358 transitions. [2022-03-19 04:43:38,537 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 358 transitions. Word has length 91 [2022-03-19 04:43:38,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:43:38,537 INFO L478 AbstractCegarLoop]: Abstraction has 258 states and 358 transitions. [2022-03-19 04:43:38,537 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 7 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-03-19 04:43:38,537 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 358 transitions. [2022-03-19 04:43:38,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-03-19 04:43:38,538 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:43:38,538 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 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, 1, 1, 1, 1] [2022-03-19 04:43:38,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-19 04:43:38,757 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:43:38,757 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:43:38,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:43:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1948981098, now seen corresponding path program 5 times [2022-03-19 04:43:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:43:38,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1225278080] [2022-03-19 04:43:38,758 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:43:38,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1948981098, now seen corresponding path program 6 times [2022-03-19 04:43:38,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:43:38,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505367942] [2022-03-19 04:43:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:43:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:43:38,772 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:43:38,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762736015] [2022-03-19 04:43:38,773 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 04:43:38,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:43:38,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:43:38,774 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:43:38,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-19 04:43:38,827 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-19 04:43:38,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:43:38,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-19 04:43:38,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:43:39,613 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-19 04:43:39,616 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-19 04:43:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 63 proven. 42 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-03-19 04:43:40,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:43:40,699 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-19 04:44:47,911 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-19 04:45:13,974 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-19 04:46:44,533 WARN L855 $PredicateComparison]: unable to prove that (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~s~0_BEFORE_CALL_57 Int) (v_main_~x~0_BEFORE_CALL_76 Int) (v_main_~d~0_BEFORE_CALL_52 Int) (v_main_~b~0_BEFORE_CALL_84 Int) (v_main_~q~0_BEFORE_CALL_51 Int) (v_main_~y~0_BEFORE_CALL_79 Int) (v_main_~r~0_BEFORE_CALL_55 Int) (v_main_~p~0_BEFORE_CALL_55 Int) (v_main_~k~0_BEFORE_CALL_54 Int)) (let ((.cse0 (* v_main_~d~0_BEFORE_CALL_52 v_main_~b~0_BEFORE_CALL_84))) (or (= (+ (* v_main_~r~0_BEFORE_CALL_55 v_main_~y~0_BEFORE_CALL_79) (* v_main_~p~0_BEFORE_CALL_55 v_main_~x~0_BEFORE_CALL_76) v_main_~b~0_BEFORE_CALL_84) (+ (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76) (* v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~y~0_BEFORE_CALL_79 v_main_~k~0_BEFORE_CALL_54 v_main_~s~0_BEFORE_CALL_57) (* v_main_~d~0_BEFORE_CALL_52 v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76 v_main_~k~0_BEFORE_CALL_54) (* v_main_~q~0_BEFORE_CALL_51 v_main_~d~0_BEFORE_CALL_52 v_main_~x~0_BEFORE_CALL_76))) (= (mod .cse0 v_main_~b~0_BEFORE_CALL_84) 0) (<= .cse0 0) (<= v_main_~b~0_BEFORE_CALL_84 0)))))) is different from true [2022-03-19 04:47:06,315 WARN L232 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 5 DAG size of output: 1 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-03-19 04:47:56,421 WARN L855 $PredicateComparison]: unable to prove that (or (= c___VERIFIER_assert_~cond 0) (and (not (= |c___VERIFIER_assert_#in~cond| 0)) (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~s~0_BEFORE_CALL_57 Int) (v_main_~x~0_BEFORE_CALL_76 Int) (v_main_~d~0_BEFORE_CALL_52 Int) (v_main_~b~0_BEFORE_CALL_84 Int) (v_main_~q~0_BEFORE_CALL_51 Int) (v_main_~y~0_BEFORE_CALL_79 Int) (v_main_~r~0_BEFORE_CALL_55 Int) (v_main_~p~0_BEFORE_CALL_55 Int) (v_main_~k~0_BEFORE_CALL_54 Int)) (let ((.cse0 (* v_main_~d~0_BEFORE_CALL_52 v_main_~b~0_BEFORE_CALL_84))) (or (= (+ (* v_main_~r~0_BEFORE_CALL_55 v_main_~y~0_BEFORE_CALL_79) (* v_main_~p~0_BEFORE_CALL_55 v_main_~x~0_BEFORE_CALL_76) v_main_~b~0_BEFORE_CALL_84) (+ (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76) (* v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~y~0_BEFORE_CALL_79 v_main_~k~0_BEFORE_CALL_54 v_main_~s~0_BEFORE_CALL_57) (* v_main_~d~0_BEFORE_CALL_52 v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76 v_main_~k~0_BEFORE_CALL_54) (* v_main_~q~0_BEFORE_CALL_51 v_main_~d~0_BEFORE_CALL_52 v_main_~x~0_BEFORE_CALL_76))) (= (mod .cse0 v_main_~b~0_BEFORE_CALL_84) 0) (<= .cse0 0) (<= v_main_~b~0_BEFORE_CALL_84 0))))))) is different from true [2022-03-19 04:48:32,580 WARN L855 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 1)) (forall ((v_main_~s~0_BEFORE_CALL_57 Int) (v_main_~x~0_BEFORE_CALL_76 Int) (v_main_~d~0_BEFORE_CALL_52 Int) (v_main_~b~0_BEFORE_CALL_84 Int) (v_main_~q~0_BEFORE_CALL_51 Int) (v_main_~y~0_BEFORE_CALL_79 Int) (v_main_~r~0_BEFORE_CALL_55 Int) (v_main_~p~0_BEFORE_CALL_55 Int) (v_main_~k~0_BEFORE_CALL_54 Int)) (let ((.cse0 (* v_main_~d~0_BEFORE_CALL_52 v_main_~b~0_BEFORE_CALL_84))) (or (= (+ (* v_main_~r~0_BEFORE_CALL_55 v_main_~y~0_BEFORE_CALL_79) (* v_main_~p~0_BEFORE_CALL_55 v_main_~x~0_BEFORE_CALL_76) v_main_~b~0_BEFORE_CALL_84) (+ (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76) (* v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~y~0_BEFORE_CALL_79 v_main_~k~0_BEFORE_CALL_54 v_main_~s~0_BEFORE_CALL_57) (* v_main_~d~0_BEFORE_CALL_52 v_main_~y~0_BEFORE_CALL_79 v_main_~s~0_BEFORE_CALL_57) (* v_main_~q~0_BEFORE_CALL_51 v_main_~x~0_BEFORE_CALL_76 v_main_~k~0_BEFORE_CALL_54) (* v_main_~q~0_BEFORE_CALL_51 v_main_~d~0_BEFORE_CALL_52 v_main_~x~0_BEFORE_CALL_76))) (= (mod .cse0 v_main_~b~0_BEFORE_CALL_84) 0) (<= .cse0 0) (<= v_main_~b~0_BEFORE_CALL_84 0))))) is different from true [2022-03-19 04:48:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 71 proven. 34 refuted. 0 times theorem prover too weak. 224 trivial. 5 not checked. [2022-03-19 04:48:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:33,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505367942] [2022-03-19 04:48:33,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:33,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762736015] [2022-03-19 04:48:33,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762736015] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:48:33,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:48:33,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 31 [2022-03-19 04:48:33,430 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:33,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1225278080] [2022-03-19 04:48:33,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1225278080] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:33,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:33,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 04:48:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005557535] [2022-03-19 04:48:33,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:33,431 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 04:48:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 04:48:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=640, Unknown=3, NotChecked=162, Total=930 [2022-03-19 04:48:33,432 INFO L87 Difference]: Start difference. First operand 258 states and 358 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-19 04:48:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:48:34,621 INFO L93 Difference]: Finished difference Result 330 states and 459 transitions. [2022-03-19 04:48:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 04:48:34,622 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2022-03-19 04:48:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:48:34,623 INFO L225 Difference]: With dead ends: 330 [2022-03-19 04:48:34,623 INFO L226 Difference]: Without dead ends: 327 [2022-03-19 04:48:34,624 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=237, Invalid=1178, Unknown=3, NotChecked=222, Total=1640 [2022-03-19 04:48:34,625 INFO L912 BasicCegarLoop]: 44 mSDtfsCounter, 70 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 04:48:34,625 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 368 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 04:48:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-19 04:48:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 317. [2022-03-19 04:48:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 176 states have (on average 1.1875) internal successors, (209), 177 states have internal predecessors, (209), 119 states have call successors, (119), 22 states have call predecessors, (119), 21 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-03-19 04:48:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 445 transitions. [2022-03-19 04:48:34,678 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 445 transitions. Word has length 108 [2022-03-19 04:48:34,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:48:34,699 INFO L478 AbstractCegarLoop]: Abstraction has 317 states and 445 transitions. [2022-03-19 04:48:34,700 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-03-19 04:48:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 445 transitions. [2022-03-19 04:48:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-03-19 04:48:34,703 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:48:34,703 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2022-03-19 04:48:34,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-19 04:48:34,919 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-19 04:48:34,920 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:48:34,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:48:34,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1002671399, now seen corresponding path program 7 times [2022-03-19 04:48:34,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1704496146] [2022-03-19 04:48:34,920 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:48:34,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1002671399, now seen corresponding path program 8 times [2022-03-19 04:48:34,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:48:34,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864743934] [2022-03-19 04:48:34,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:48:34,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:48:34,929 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:48:34,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547775922] [2022-03-19 04:48:34,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:48:34,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:34,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:48:34,930 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:48:34,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-19 04:48:34,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:48:34,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:48:34,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-19 04:48:34,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:48:35,253 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 165 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-03-19 04:48:35,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:48:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-03-19 04:48:35,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:35,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864743934] [2022-03-19 04:48:35,534 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:35,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547775922] [2022-03-19 04:48:35,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547775922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:48:35,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:48:35,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-03-19 04:48:35,534 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:35,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1704496146] [2022-03-19 04:48:35,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1704496146] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:35,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:35,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-19 04:48:35,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785573932] [2022-03-19 04:48:35,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:35,535 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-19 04:48:35,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:35,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-19 04:48:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-03-19 04:48:35,535 INFO L87 Difference]: Start difference. First operand 317 states and 445 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:48:35,760 INFO L93 Difference]: Finished difference Result 387 states and 528 transitions. [2022-03-19 04:48:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 04:48:35,761 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 111 [2022-03-19 04:48:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:48:35,762 INFO L225 Difference]: With dead ends: 387 [2022-03-19 04:48:35,762 INFO L226 Difference]: Without dead ends: 271 [2022-03-19 04:48:35,763 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2022-03-19 04:48:35,763 INFO L912 BasicCegarLoop]: 47 mSDtfsCounter, 48 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:48:35,763 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 307 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:48:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-03-19 04:48:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 232. [2022-03-19 04:48:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 133 states have (on average 1.150375939849624) internal successors, (153), 134 states have internal predecessors, (153), 79 states have call successors, (79), 20 states have call predecessors, (79), 19 states have return successors, (77), 77 states have call predecessors, (77), 77 states have call successors, (77) [2022-03-19 04:48:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 309 transitions. [2022-03-19 04:48:35,801 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 309 transitions. Word has length 111 [2022-03-19 04:48:35,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:48:35,803 INFO L478 AbstractCegarLoop]: Abstraction has 232 states and 309 transitions. [2022-03-19 04:48:35,803 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:35,803 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 309 transitions. [2022-03-19 04:48:35,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-03-19 04:48:35,803 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:48:35,804 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2022-03-19 04:48:35,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-19 04:48:36,020 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-19 04:48:36,020 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:48:36,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:48:36,021 INFO L85 PathProgramCache]: Analyzing trace with hash 890766036, now seen corresponding path program 9 times [2022-03-19 04:48:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:36,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1287286117] [2022-03-19 04:48:36,021 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:48:36,021 INFO L85 PathProgramCache]: Analyzing trace with hash 890766036, now seen corresponding path program 10 times [2022-03-19 04:48:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:48:36,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186108104] [2022-03-19 04:48:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:48:36,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:48:36,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:48:36,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730687998] [2022-03-19 04:48:36,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 04:48:36,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:36,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:48:36,030 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:48:36,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-19 04:48:36,072 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 04:48:36,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:48:36,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-19 04:48:36,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:48:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-03-19 04:48:36,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:48:37,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:37,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186108104] [2022-03-19 04:48:37,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:37,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730687998] [2022-03-19 04:48:37,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730687998] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 04:48:37,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-19 04:48:37,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-03-19 04:48:37,596 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:37,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1287286117] [2022-03-19 04:48:37,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1287286117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:37,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:37,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 04:48:37,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664223076] [2022-03-19 04:48:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:37,597 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 04:48:37,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:37,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 04:48:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-03-19 04:48:37,597 INFO L87 Difference]: Start difference. First operand 232 states and 309 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:38,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:48:38,055 INFO L93 Difference]: Finished difference Result 349 states and 486 transitions. [2022-03-19 04:48:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 04:48:38,055 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 113 [2022-03-19 04:48:38,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:48:38,057 INFO L225 Difference]: With dead ends: 349 [2022-03-19 04:48:38,057 INFO L226 Difference]: Without dead ends: 295 [2022-03-19 04:48:38,057 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2022-03-19 04:48:38,058 INFO L912 BasicCegarLoop]: 76 mSDtfsCounter, 44 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 04:48:38,058 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 504 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-19 04:48:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-03-19 04:48:38,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 253. [2022-03-19 04:48:38,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 146 states have (on average 1.1506849315068493) internal successors, (168), 147 states have internal predecessors, (168), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-03-19 04:48:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 340 transitions. [2022-03-19 04:48:38,104 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 340 transitions. Word has length 113 [2022-03-19 04:48:38,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:48:38,104 INFO L478 AbstractCegarLoop]: Abstraction has 253 states and 340 transitions. [2022-03-19 04:48:38,104 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:38,104 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 340 transitions. [2022-03-19 04:48:38,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-19 04:48:38,106 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:48:38,106 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2022-03-19 04:48:38,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-19 04:48:38,325 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-19 04:48:38,325 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:48:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:48:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1938711081, now seen corresponding path program 11 times [2022-03-19 04:48:38,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:38,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1417157199] [2022-03-19 04:48:38,326 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:48:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1938711081, now seen corresponding path program 12 times [2022-03-19 04:48:38,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:48:38,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498691070] [2022-03-19 04:48:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:48:38,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:48:38,334 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:48:38,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144206904] [2022-03-19 04:48:38,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 04:48:38,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:48:38,336 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:48:38,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-19 04:48:38,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-19 04:48:38,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:48:38,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-19 04:48:38,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:48:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 33 proven. 32 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-03-19 04:48:38,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:48:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 53 proven. 12 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-03-19 04:48:38,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:38,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498691070] [2022-03-19 04:48:38,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:38,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144206904] [2022-03-19 04:48:38,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144206904] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:48:38,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:48:38,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2022-03-19 04:48:38,951 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:38,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1417157199] [2022-03-19 04:48:38,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1417157199] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:38,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:38,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 04:48:38,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18846938] [2022-03-19 04:48:38,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:38,952 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 04:48:38,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:38,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 04:48:38,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-19 04:48:38,952 INFO L87 Difference]: Start difference. First operand 253 states and 340 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-19 04:48:39,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:48:39,393 INFO L93 Difference]: Finished difference Result 317 states and 438 transitions. [2022-03-19 04:48:39,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 04:48:39,394 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-03-19 04:48:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:48:39,395 INFO L225 Difference]: With dead ends: 317 [2022-03-19 04:48:39,395 INFO L226 Difference]: Without dead ends: 310 [2022-03-19 04:48:39,396 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=913, Unknown=0, NotChecked=0, Total=1260 [2022-03-19 04:48:39,396 INFO L912 BasicCegarLoop]: 81 mSDtfsCounter, 54 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 04:48:39,396 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 526 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 04:48:39,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-03-19 04:48:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 259. [2022-03-19 04:48:39,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 152 states have (on average 1.1513157894736843) internal successors, (175), 153 states have internal predecessors, (175), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-03-19 04:48:39,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 347 transitions. [2022-03-19 04:48:39,445 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 347 transitions. Word has length 116 [2022-03-19 04:48:39,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:48:39,445 INFO L478 AbstractCegarLoop]: Abstraction has 259 states and 347 transitions. [2022-03-19 04:48:39,446 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-19 04:48:39,446 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 347 transitions. [2022-03-19 04:48:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-19 04:48:39,446 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:48:39,446 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 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, 1, 1, 1, 1] [2022-03-19 04:48:39,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-19 04:48:39,659 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:39,659 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:48:39,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:48:39,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1687072417, now seen corresponding path program 13 times [2022-03-19 04:48:39,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:39,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [18392727] [2022-03-19 04:48:39,660 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:48:39,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1687072417, now seen corresponding path program 14 times [2022-03-19 04:48:39,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:48:39,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299990679] [2022-03-19 04:48:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:48:39,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:48:39,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:48:39,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456264225] [2022-03-19 04:48:39,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:48:39,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:39,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:48:39,682 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:48:39,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-19 04:48:39,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:48:39,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:48:39,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-19 04:48:39,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:48:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 39 proven. 32 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-03-19 04:48:40,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:48:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 29 proven. 42 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-03-19 04:48:40,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:40,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299990679] [2022-03-19 04:48:40,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:40,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456264225] [2022-03-19 04:48:40,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456264225] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:48:40,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:48:40,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-03-19 04:48:40,465 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:40,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [18392727] [2022-03-19 04:48:40,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [18392727] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:40,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:40,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 04:48:40,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992737731] [2022-03-19 04:48:40,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:40,466 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 04:48:40,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:40,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 04:48:40,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-03-19 04:48:40,466 INFO L87 Difference]: Start difference. First operand 259 states and 347 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:40,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:48:40,838 INFO L93 Difference]: Finished difference Result 376 states and 511 transitions. [2022-03-19 04:48:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 04:48:40,838 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 116 [2022-03-19 04:48:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:48:40,840 INFO L225 Difference]: With dead ends: 376 [2022-03-19 04:48:40,840 INFO L226 Difference]: Without dead ends: 259 [2022-03-19 04:48:40,841 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2022-03-19 04:48:40,841 INFO L912 BasicCegarLoop]: 62 mSDtfsCounter, 52 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 04:48:40,841 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 511 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 04:48:40,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-19 04:48:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-03-19 04:48:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 152 states have (on average 1.144736842105263) internal successors, (174), 153 states have internal predecessors, (174), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-03-19 04:48:40,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 346 transitions. [2022-03-19 04:48:40,888 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 346 transitions. Word has length 116 [2022-03-19 04:48:40,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:48:40,889 INFO L478 AbstractCegarLoop]: Abstraction has 259 states and 346 transitions. [2022-03-19 04:48:40,889 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 346 transitions. [2022-03-19 04:48:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-03-19 04:48:40,890 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:48:40,890 INFO L500 BasicCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-03-19 04:48:40,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-19 04:48:41,103 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:41,103 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:48:41,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:48:41,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2089528091, now seen corresponding path program 1 times [2022-03-19 04:48:41,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:41,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [29358200] [2022-03-19 04:48:41,104 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:48:41,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2089528091, now seen corresponding path program 2 times [2022-03-19 04:48:41,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:48:41,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640153668] [2022-03-19 04:48:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:48:41,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:48:41,111 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:48:41,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248958296] [2022-03-19 04:48:41,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-19 04:48:41,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:41,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:48:41,113 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:48:41,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-19 04:48:41,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-19 04:48:41,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:48:41,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-19 04:48:41,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:48:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 183 proven. 18 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-03-19 04:48:41,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:48:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-03-19 04:48:41,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640153668] [2022-03-19 04:48:41,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248958296] [2022-03-19 04:48:41,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248958296] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:48:41,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:48:41,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-03-19 04:48:41,693 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:41,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [29358200] [2022-03-19 04:48:41,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [29358200] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:41,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:41,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 04:48:41,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681738834] [2022-03-19 04:48:41,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:41,693 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-19 04:48:41,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:41,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-19 04:48:41,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-03-19 04:48:41,694 INFO L87 Difference]: Start difference. First operand 259 states and 346 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:41,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:48:41,932 INFO L93 Difference]: Finished difference Result 318 states and 413 transitions. [2022-03-19 04:48:41,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 04:48:41,932 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 119 [2022-03-19 04:48:41,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:48:41,933 INFO L225 Difference]: With dead ends: 318 [2022-03-19 04:48:41,933 INFO L226 Difference]: Without dead ends: 141 [2022-03-19 04:48:41,934 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2022-03-19 04:48:41,934 INFO L912 BasicCegarLoop]: 52 mSDtfsCounter, 37 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:48:41,934 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 393 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:48:41,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-03-19 04:48:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-03-19 04:48:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 88 states have internal predecessors, (91), 39 states have call successors, (39), 15 states have call predecessors, (39), 14 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-03-19 04:48:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2022-03-19 04:48:41,956 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 119 [2022-03-19 04:48:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:48:41,956 INFO L478 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2022-03-19 04:48:41,956 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 5 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2022-03-19 04:48:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-03-19 04:48:41,957 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:48:41,957 INFO L500 BasicCegarLoop]: trace histogram [21, 20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1] [2022-03-19 04:48:41,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-03-19 04:48:42,165 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-19 04:48:42,165 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:48:42,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:48:42,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2097211745, now seen corresponding path program 15 times [2022-03-19 04:48:42,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:42,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2131162748] [2022-03-19 04:48:42,166 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:48:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2097211745, now seen corresponding path program 16 times [2022-03-19 04:48:42,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:48:42,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040660740] [2022-03-19 04:48:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:48:42,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:48:42,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:48:42,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803232256] [2022-03-19 04:48:42,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 04:48:42,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:42,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:48:42,175 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:48:42,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-19 04:48:42,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 04:48:42,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:48:42,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-19 04:48:42,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:48:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 53 proven. 76 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2022-03-19 04:48:43,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:48:44,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040660740] [2022-03-19 04:48:44,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803232256] [2022-03-19 04:48:44,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803232256] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 04:48:44,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-19 04:48:44,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-03-19 04:48:44,701 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:44,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2131162748] [2022-03-19 04:48:44,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2131162748] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:44,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:44,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 04:48:44,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287410440] [2022-03-19 04:48:44,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:44,703 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-19 04:48:44,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:44,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-19 04:48:44,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-03-19 04:48:44,703 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 8 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-03-19 04:48:45,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:48:45,273 INFO L93 Difference]: Finished difference Result 218 states and 267 transitions. [2022-03-19 04:48:45,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-19 04:48:45,273 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 8 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 160 [2022-03-19 04:48:45,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:48:45,274 INFO L225 Difference]: With dead ends: 218 [2022-03-19 04:48:45,274 INFO L226 Difference]: Without dead ends: 147 [2022-03-19 04:48:45,275 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=237, Invalid=1323, Unknown=0, NotChecked=0, Total=1560 [2022-03-19 04:48:45,275 INFO L912 BasicCegarLoop]: 79 mSDtfsCounter, 52 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-19 04:48:45,275 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 769 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 207 Invalid, 0 Unknown, 131 Unchecked, 0.3s Time] [2022-03-19 04:48:45,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-03-19 04:48:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-03-19 04:48:45,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 90 states have internal predecessors, (93), 43 states have call successors, (43), 15 states have call predecessors, (43), 14 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-03-19 04:48:45,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 177 transitions. [2022-03-19 04:48:45,297 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 177 transitions. Word has length 160 [2022-03-19 04:48:45,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:48:45,297 INFO L478 AbstractCegarLoop]: Abstraction has 147 states and 177 transitions. [2022-03-19 04:48:45,297 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 8 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-03-19 04:48:45,297 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 177 transitions. [2022-03-19 04:48:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-03-19 04:48:45,298 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:48:45,298 INFO L500 BasicCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1] [2022-03-19 04:48:45,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-19 04:48:45,514 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-19 04:48:45,514 INFO L403 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:48:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:48:45,514 INFO L85 PathProgramCache]: Analyzing trace with hash 576880450, now seen corresponding path program 17 times [2022-03-19 04:48:45,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:45,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2092871900] [2022-03-19 04:48:45,515 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:48:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash 576880450, now seen corresponding path program 18 times [2022-03-19 04:48:45,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:48:45,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275518648] [2022-03-19 04:48:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:48:45,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:48:45,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:48:45,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014254239] [2022-03-19 04:48:45,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 04:48:45,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:45,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:48:45,523 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:48:45,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-19 04:48:45,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-19 04:48:45,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:48:45,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-19 04:48:45,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:48:45,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 92 proven. 49 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2022-03-19 04:48:45,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:48:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 122 proven. 19 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2022-03-19 04:48:46,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:46,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275518648] [2022-03-19 04:48:46,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:46,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014254239] [2022-03-19 04:48:46,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014254239] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:48:46,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:48:46,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-03-19 04:48:46,224 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:46,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2092871900] [2022-03-19 04:48:46,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2092871900] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:46,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:46,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-03-19 04:48:46,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846609715] [2022-03-19 04:48:46,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:46,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-19 04:48:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-19 04:48:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-03-19 04:48:46,225 INFO L87 Difference]: Start difference. First operand 147 states and 177 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:48:46,459 INFO L93 Difference]: Finished difference Result 153 states and 182 transitions. [2022-03-19 04:48:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-19 04:48:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 182 [2022-03-19 04:48:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:48:46,460 INFO L225 Difference]: With dead ends: 153 [2022-03-19 04:48:46,460 INFO L226 Difference]: Without dead ends: 146 [2022-03-19 04:48:46,461 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=661, Unknown=0, NotChecked=0, Total=870 [2022-03-19 04:48:46,461 INFO L912 BasicCegarLoop]: 55 mSDtfsCounter, 41 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:48:46,461 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 354 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:48:46,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-03-19 04:48:46,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2022-03-19 04:48:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 83 states have (on average 1.036144578313253) internal successors, (86), 83 states have internal predecessors, (86), 42 states have call successors, (42), 15 states have call predecessors, (42), 14 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-03-19 04:48:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2022-03-19 04:48:46,482 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 182 [2022-03-19 04:48:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:48:46,482 INFO L478 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2022-03-19 04:48:46,482 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-03-19 04:48:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2022-03-19 04:48:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-03-19 04:48:46,483 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:48:46,483 INFO L500 BasicCegarLoop]: trace histogram [25, 24, 24, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 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] [2022-03-19 04:48:46,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-19 04:48:46,698 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:46,698 INFO L403 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:48:46,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:48:46,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2054277986, now seen corresponding path program 3 times [2022-03-19 04:48:46,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:46,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1863598840] [2022-03-19 04:48:46,699 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:48:46,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2054277986, now seen corresponding path program 4 times [2022-03-19 04:48:46,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:48:46,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11819406] [2022-03-19 04:48:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:48:46,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:48:46,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:48:46,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366436972] [2022-03-19 04:48:46,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-19 04:48:46,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:46,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:48:46,719 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:48:46,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-19 04:48:46,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-19 04:48:46,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:48:46,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-19 04:48:46,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:48:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 81 proven. 106 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2022-03-19 04:48:53,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:48:55,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:55,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11819406] [2022-03-19 04:48:55,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:55,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366436972] [2022-03-19 04:48:55,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366436972] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-19 04:48:55,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-19 04:48:55,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-03-19 04:48:55,838 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:55,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1863598840] [2022-03-19 04:48:55,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1863598840] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:55,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:55,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-03-19 04:48:55,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944520091] [2022-03-19 04:48:55,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:55,839 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 04:48:55,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:55,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 04:48:55,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2022-03-19 04:48:55,839 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-03-19 04:48:58,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:48:58,707 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2022-03-19 04:48:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-19 04:48:58,708 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 185 [2022-03-19 04:48:58,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:48:58,709 INFO L225 Difference]: With dead ends: 213 [2022-03-19 04:48:58,709 INFO L226 Difference]: Without dead ends: 146 [2022-03-19 04:48:58,709 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=280, Invalid=1526, Unknown=0, NotChecked=0, Total=1806 [2022-03-19 04:48:58,710 INFO L912 BasicCegarLoop]: 81 mSDtfsCounter, 56 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-19 04:48:58,710 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 755 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 212 Invalid, 0 Unknown, 165 Unchecked, 0.5s Time] [2022-03-19 04:48:58,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-03-19 04:48:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-03-19 04:48:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 85 states have (on average 1.035294117647059) internal successors, (88), 85 states have internal predecessors, (88), 46 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-03-19 04:48:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 179 transitions. [2022-03-19 04:48:58,741 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 179 transitions. Word has length 185 [2022-03-19 04:48:58,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:48:58,742 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 179 transitions. [2022-03-19 04:48:58,742 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-03-19 04:48:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 179 transitions. [2022-03-19 04:48:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-03-19 04:48:58,742 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 04:48:58,743 INFO L500 BasicCegarLoop]: trace histogram [29, 28, 28, 8, 8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 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] [2022-03-19 04:48:58,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-19 04:48:58,949 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:58,949 INFO L403 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 04:48:58,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 04:48:58,950 INFO L85 PathProgramCache]: Analyzing trace with hash 294904993, now seen corresponding path program 5 times [2022-03-19 04:48:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:58,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [795413081] [2022-03-19 04:48:58,950 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 04:48:58,950 INFO L85 PathProgramCache]: Analyzing trace with hash 294904993, now seen corresponding path program 6 times [2022-03-19 04:48:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 04:48:58,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611669976] [2022-03-19 04:48:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 04:48:58,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 04:48:58,963 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 04:48:58,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [386489286] [2022-03-19 04:48:58,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-19 04:48:58,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 04:48:58,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 04:48:58,967 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 04:48:58,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-19 04:48:59,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-19 04:48:59,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-19 04:48:59,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-19 04:48:59,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 04:48:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 144 proven. 53 refuted. 0 times theorem prover too weak. 1563 trivial. 0 not checked. [2022-03-19 04:48:59,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 04:48:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1760 backedges. 107 proven. 90 refuted. 0 times theorem prover too weak. 1563 trivial. 0 not checked. [2022-03-19 04:48:59,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 04:48:59,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611669976] [2022-03-19 04:48:59,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 04:48:59,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386489286] [2022-03-19 04:48:59,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386489286] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 04:48:59,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 04:48:59,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-03-19 04:48:59,985 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 04:48:59,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [795413081] [2022-03-19 04:48:59,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [795413081] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 04:48:59,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 04:48:59,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-03-19 04:48:59,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352628009] [2022-03-19 04:48:59,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 04:48:59,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 04:48:59,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 04:48:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 04:48:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2022-03-19 04:48:59,987 INFO L87 Difference]: Start difference. First operand 146 states and 179 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-03-19 04:49:00,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 04:49:00,360 INFO L93 Difference]: Finished difference Result 158 states and 188 transitions. [2022-03-19 04:49:00,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-19 04:49:00,360 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 207 [2022-03-19 04:49:00,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 04:49:00,361 INFO L225 Difference]: With dead ends: 158 [2022-03-19 04:49:00,361 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 04:49:00,362 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=247, Invalid=1085, Unknown=0, NotChecked=0, Total=1332 [2022-03-19 04:49:00,362 INFO L912 BasicCegarLoop]: 57 mSDtfsCounter, 38 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 04:49:00,362 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 382 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 04:49:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 04:49:00,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 04:49:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-19 04:49:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 04:49:00,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2022-03-19 04:49:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 04:49:00,363 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 04:49:00,363 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 7 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-03-19 04:49:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 04:49:00,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 04:49:00,365 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 04:49:00,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-19 04:49:00,565 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-19 04:49:00,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-19 04:49:27,300 WARN L232 SmtUtils]: Spent 22.78s on a formula simplification. DAG size of input: 171 DAG size of output: 171 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-19 04:49:35,205 WARN L232 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 194 DAG size of output: 89 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-19 04:49:54,555 WARN L232 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 194 DAG size of output: 85 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-19 04:50:05,038 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-03-19 04:50:05,038 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-03-19 04:50:05,038 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-03-19 04:50:05,038 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-03-19 04:50:05,038 INFO L878 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|) [2022-03-19 04:50:05,038 INFO L878 garLoopResultBuilder]: At program point L8-2(lines 7 9) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-19 04:50:05,038 INFO L878 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 7 9) the Hoare annotation is: (and (not (= |assume_abort_if_not_#in~cond| 0)) (= assume_abort_if_not_~cond |assume_abort_if_not_#in~cond|)) [2022-03-19 04:50:05,038 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse3 (<= main_~c~0 2)) (.cse4 (= main_~q~0 1)) (.cse9 (* main_~y~0 main_~r~0)) (.cse5 (= main_~r~0 0)) (.cse7 (<= main_~y~0 2)) (.cse13 (<= 1 main_~y~0)) (.cse10 (= main_~a~0 main_~x~0)) (.cse0 (= main_~p~0 0)) (.cse1 (= main_~r~0 1)) (.cse2 (= main_~a~0 main_~y~0)) (.cse14 (<= main_~x~0 2))) (or (and (<= 1 main_~c~0) (= main_~s~0 0) .cse0 .cse1 .cse2 (= main_~b~0 main_~x~0) .cse3 (< main_~x~0 main_~a~0) (<= main_~a~0 2) (<= 1 main_~b~0) .cse4) (let ((.cse6 (* main_~x~0 2))) (let ((.cse8 (div .cse6 main_~x~0))) (and .cse5 (= (+ .cse6 main_~b~0) main_~y~0) .cse7 (= (+ main_~s~0 (* main_~r~0 .cse8)) 1) (< main_~x~0 main_~y~0) (= main_~x~0 (+ .cse9 (* main_~p~0 main_~x~0))) (= (+ main_~q~0 (* main_~p~0 .cse8)) 0) .cse10 (< main_~y~0 (* main_~x~0 3))))) (let ((.cse11 (+ main_~x~0 (* (- 1) main_~b~0)))) (let ((.cse12 (div .cse11 .cse9))) (and (= (mod .cse11 .cse9) 0) (= (+ (* main_~r~0 .cse12) main_~s~0) 0) (<= 1 main_~x~0) .cse7 (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse12))) .cse0 .cse1 .cse3 (= .cse9 main_~a~0) .cse4 .cse13 .cse14))) (and .cse5 .cse7 (= main_~s~0 1) (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse13 .cse10 .cse14 (= main_~p~0 1)) (let ((.cse15 (* main_~a~0 2))) (and (= (+ .cse15 main_~b~0) main_~x~0) .cse0 .cse1 .cse2 (= (+ (* main_~p~0 2) main_~q~0) 1) (<= .cse15 main_~x~0) (< main_~x~0 (* main_~a~0 3)) .cse14 (= (+ main_~s~0 (* main_~r~0 2)) 0))))) [2022-03-19 04:50:05,039 INFO L878 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (= main_~r~0 0)) (.cse1 (= main_~a~0 main_~x~0)) (.cse2 (< main_~b~0 main_~a~0)) (.cse4 (<= 1 main_~x~0)) (.cse5 (<= main_~y~0 2)) (.cse8 (<= 1 main_~y~0)) (.cse9 (< main_~b~0 2)) (.cse10 (<= main_~x~0 2)) (.cse7 (* main_~y~0 main_~r~0))) (or (and .cse0 (= main_~s~0 1) (= main_~b~0 main_~y~0) (= main_~q~0 0) (= main_~y~0 0) .cse1 (= main_~p~0 1)) (let ((.cse3 (* main_~x~0 2))) (let ((.cse6 (div .cse3 main_~x~0))) (and .cse2 .cse0 (= (+ .cse3 main_~b~0) main_~y~0) .cse4 .cse5 (= (+ main_~s~0 (* main_~r~0 .cse6)) 1) (< main_~x~0 main_~y~0) (= main_~x~0 (+ .cse7 (* main_~p~0 main_~x~0))) (= (+ main_~q~0 (* main_~p~0 .cse6)) 0) .cse8 .cse9 .cse1 .cse10))) (let ((.cse11 (+ main_~x~0 (* (- 1) main_~b~0)))) (let ((.cse12 (div .cse11 .cse7))) (and .cse2 (= (mod .cse11 .cse7) 0) (= (+ (* main_~r~0 .cse12) main_~s~0) 0) .cse4 .cse5 (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse12))) (= main_~p~0 0) (= main_~r~0 1) (= (+ main_~s~0 (* main_~r~0 (div main_~x~0 .cse7))) 0) (= .cse7 main_~a~0) (= main_~q~0 1) .cse8 .cse9 .cse10))))) [2022-03-19 04:50:05,039 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 18 76) the Hoare annotation is: true [2022-03-19 04:50:05,039 INFO L878 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse35 (+ main_~x~0 (* (- 1) main_~b~0))) (.cse33 (* main_~y~0 main_~r~0))) (let ((.cse34 (div .cse35 .cse33))) (let ((.cse1 (<= 1 main_~c~0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse9 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse13 (<= main_~x~0 main_~a~0)) (.cse14 (<= 1 main_~b~0)) (.cse17 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse18 (= (mod .cse35 .cse33) 0)) (.cse19 (= (+ (* main_~r~0 .cse34) main_~s~0) 0)) (.cse20 (<= 1 main_~x~0)) (.cse21 (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse34)))) (.cse3 (= main_~p~0 0)) (.cse5 (= main_~r~0 1)) (.cse8 (< main_~b~0 main_~c~0)) (.cse10 (<= main_~c~0 2)) (.cse22 (= .cse33 main_~a~0)) (.cse15 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse2 (<= main_~y~0 2)) (.cse16 (= main_~d~0 1)) (.cse25 (= main_~r~0 0)) (.cse4 (= main_~k~0 0)) (.cse26 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse27 (<= 1 main_~a~0)) (.cse28 (= main_~b~0 main_~y~0)) (.cse12 (<= main_~b~0 (div main_~v~0 2))) (.cse29 (= main_~q~0 0)) (.cse23 (<= 1 main_~y~0)) (.cse30 (= main_~a~0 main_~x~0)) (.cse31 (= main_~c~0 main_~x~0)) (.cse24 (<= main_~x~0 2)) (.cse32 (= main_~p~0 1))) (or (and .cse0 .cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 (= main_~s~0 0) .cse2 .cse3 .cse4 .cse5 .cse7 .cse9 .cse10 .cse16 .cse11 .cse13 .cse14 .cse15 (< main_~v~0 main_~c~0)) (and (= main_~b~0 main_~v~0) .cse17 .cse18 .cse19 .cse20 .cse21 .cse3 .cse5 .cse8 .cse10 .cse16 (<= main_~a~0 2) .cse22 .cse15 .cse23 .cse24) (and .cse0 .cse17 .cse18 .cse19 .cse20 .cse2 .cse21 .cse3 .cse5 .cse6 .cse8 .cse10 .cse22 .cse15 .cse23 .cse24) (and .cse0 .cse25 .cse2 .cse4 .cse26 .cse27 .cse28 .cse16 .cse29 .cse23 .cse30 .cse31 .cse24 .cse32) (and .cse25 (<= (* main_~b~0 2) main_~c~0) .cse4 .cse26 .cse6 .cse27 .cse28 (= main_~d~0 2) .cse12 .cse29 .cse23 .cse30 .cse31 .cse24 .cse32))))) [2022-03-19 04:50:05,039 INFO L878 garLoopResultBuilder]: At program point L36(lines 36 37) the Hoare annotation is: (let ((.cse3 (<= main_~c~0 2)) (.cse4 (= main_~q~0 1)) (.cse9 (* main_~y~0 main_~r~0)) (.cse5 (= main_~r~0 0)) (.cse7 (<= main_~y~0 2)) (.cse13 (<= 1 main_~y~0)) (.cse10 (= main_~a~0 main_~x~0)) (.cse0 (= main_~p~0 0)) (.cse1 (= main_~r~0 1)) (.cse2 (= main_~a~0 main_~y~0)) (.cse14 (<= main_~x~0 2))) (or (and (<= 1 main_~c~0) (= main_~s~0 0) .cse0 .cse1 .cse2 (= main_~b~0 main_~x~0) .cse3 (< main_~x~0 main_~a~0) (<= main_~a~0 2) (<= 1 main_~b~0) .cse4) (let ((.cse6 (* main_~x~0 2))) (let ((.cse8 (div .cse6 main_~x~0))) (and .cse5 (= (+ .cse6 main_~b~0) main_~y~0) .cse7 (= (+ main_~s~0 (* main_~r~0 .cse8)) 1) (< main_~x~0 main_~y~0) (= main_~x~0 (+ .cse9 (* main_~p~0 main_~x~0))) (= (+ main_~q~0 (* main_~p~0 .cse8)) 0) .cse10 (< main_~y~0 (* main_~x~0 3))))) (let ((.cse11 (+ main_~x~0 (* (- 1) main_~b~0)))) (let ((.cse12 (div .cse11 .cse9))) (and (= (mod .cse11 .cse9) 0) (= (+ (* main_~r~0 .cse12) main_~s~0) 0) (<= 1 main_~x~0) .cse7 (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse12))) .cse0 .cse1 .cse3 (= .cse9 main_~a~0) .cse4 .cse13 .cse14))) (and .cse5 .cse7 (= main_~s~0 1) (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse13 .cse10 .cse14 (= main_~p~0 1)) (let ((.cse15 (* main_~a~0 2))) (and (= (+ .cse15 main_~b~0) main_~x~0) .cse0 .cse1 .cse2 (= (+ (* main_~p~0 2) main_~q~0) 1) (<= .cse15 main_~x~0) (< main_~x~0 (* main_~a~0 3)) .cse14 (= (+ main_~s~0 (* main_~r~0 2)) 0))))) [2022-03-19 04:50:05,039 INFO L878 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-03-19 04:50:05,039 INFO L878 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 2) (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-03-19 04:50:05,039 INFO L878 garLoopResultBuilder]: At program point L53(lines 49 59) the Hoare annotation is: (let ((.cse2 (= main_~s~0 0)) (.cse5 (= main_~a~0 main_~y~0)) (.cse7 (= main_~b~0 main_~x~0)) (.cse9 (< main_~x~0 main_~a~0)) (.cse10 (<= main_~a~0 2)) (.cse11 (<= 1 main_~b~0)) (.cse13 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse14 (<= main_~b~0 (div main_~v~0 2))) (.cse15 (= main_~r~0 0)) (.cse17 (= main_~k~0 0)) (.cse18 (= main_~s~0 1)) (.cse19 (<= 1 main_~a~0)) (.cse20 (= main_~b~0 main_~y~0)) (.cse21 (= main_~q~0 0)) (.cse23 (= main_~a~0 main_~x~0)) (.cse24 (= main_~c~0 main_~x~0)) (.cse26 (= main_~p~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse16 (<= main_~y~0 2)) (.cse3 (= main_~p~0 0)) (.cse4 (= main_~r~0 1)) (.cse6 (< main_~b~0 main_~c~0)) (.cse8 (<= main_~c~0 2)) (.cse12 (= main_~q~0 1)) (.cse22 (<= 1 main_~y~0)) (.cse25 (<= main_~x~0 2))) (or (and (= main_~b~0 main_~v~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse13 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse14 .cse11 .cse12) (and .cse15 (<= (* main_~b~0 2) main_~c~0) .cse16 .cse17 .cse18 .cse13 .cse19 .cse20 (= main_~d~0 2) .cse14 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26) (and .cse0 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 (= main_~d~0 1) .cse21 .cse22 .cse23 .cse24 .cse25 .cse26) (let ((.cse27 (+ main_~x~0 (* (- 1) main_~b~0))) (.cse28 (* main_~y~0 main_~r~0))) (let ((.cse29 (div .cse27 .cse28))) (and .cse0 (<= main_~v~0 main_~b~0) .cse1 (= (mod .cse27 .cse28) 0) (= (+ (* main_~r~0 .cse29) main_~s~0) 0) (<= 1 main_~x~0) .cse16 (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse29))) .cse3 .cse4 .cse6 .cse8 (= .cse28 main_~a~0) .cse12 .cse22 .cse25))))) [2022-03-19 04:50:05,039 INFO L878 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse36 (+ main_~x~0 (* (- 1) main_~b~0))) (.cse34 (* main_~y~0 main_~r~0))) (let ((.cse35 (div .cse36 .cse34))) (let ((.cse1 (<= 1 main_~c~0)) (.cse2 (= main_~s~0 0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse12 (<= main_~x~0 main_~a~0)) (.cse13 (<= 1 main_~b~0)) (.cse18 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse19 (= (mod .cse36 .cse34) 0)) (.cse20 (= (+ (* main_~r~0 .cse35) main_~s~0) 0)) (.cse21 (<= 1 main_~x~0)) (.cse22 (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse35)))) (.cse4 (= main_~p~0 0)) (.cse6 (= main_~r~0 1)) (.cse16 (< main_~b~0 main_~c~0)) (.cse9 (<= main_~c~0 2)) (.cse23 (= .cse34 main_~a~0)) (.cse14 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (<= main_~y~0 2)) (.cse10 (= main_~d~0 1)) (.cse26 (= main_~r~0 0)) (.cse5 (= main_~k~0 0)) (.cse27 (= main_~s~0 1)) (.cse15 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse28 (<= 1 main_~a~0)) (.cse29 (= main_~b~0 main_~y~0)) (.cse17 (<= main_~b~0 (div main_~v~0 2))) (.cse30 (= main_~q~0 0)) (.cse24 (<= 1 main_~y~0)) (.cse31 (= main_~a~0 main_~x~0)) (.cse32 (= main_~c~0 main_~x~0)) (.cse25 (<= main_~x~0 2)) (.cse33 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< main_~v~0 main_~c~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse15 .cse7 .cse16 .cse8 .cse9 .cse11 .cse17 .cse12 .cse13 .cse14) (and (= main_~b~0 main_~v~0) .cse18 .cse19 .cse20 .cse21 .cse22 .cse4 .cse6 .cse16 .cse9 .cse10 (<= main_~a~0 2) .cse23 .cse14 .cse24 .cse25) (and .cse0 .cse18 .cse19 .cse20 .cse21 .cse3 .cse22 .cse4 .cse6 .cse15 .cse16 .cse9 .cse23 .cse14 .cse24 .cse25) (and .cse0 .cse26 .cse3 .cse5 .cse27 .cse28 .cse29 .cse10 .cse30 .cse24 .cse31 .cse32 .cse25 .cse33) (and .cse26 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse27 .cse15 .cse28 .cse29 (= main_~d~0 2) .cse17 .cse30 .cse24 .cse31 .cse32 .cse25 .cse33))))) [2022-03-19 04:50:05,039 INFO L878 garLoopResultBuilder]: At program point L49-3(lines 49 59) the Hoare annotation is: (let ((.cse2 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse4 (= main_~r~0 0)) (.cse5 (<= main_~y~0 2)) (.cse1 (= main_~k~0 0)) (.cse6 (= main_~s~0 1)) (.cse7 (<= 1 main_~a~0)) (.cse8 (= main_~b~0 main_~y~0)) (.cse9 (= main_~q~0 0)) (.cse3 (not (<= (* main_~v~0 2) main_~c~0))) (.cse10 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse12 (= main_~c~0 main_~x~0)) (.cse13 (<= main_~x~0 2)) (.cse14 (= main_~p~0 1))) (or (and .cse0 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (= main_~p~0 0) .cse1 (= main_~c~0 main_~y~0) (< main_~x~0 main_~y~0) (= main_~r~0 1) .cse2 (= main_~a~0 main_~y~0) (= main_~b~0 main_~x~0) (<= main_~a~0 2) .cse3 (= main_~q~0 1)) (and .cse4 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse1 .cse6 .cse2 .cse7 .cse8 (= main_~d~0 2) .cse9 .cse3 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse4 (<= main_~v~0 main_~b~0) .cse5 .cse1 .cse6 .cse7 .cse8 .cse9 .cse3 .cse10 .cse11 .cse12 .cse13 .cse14))) [2022-03-19 04:50:05,039 INFO L885 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: true [2022-03-19 04:50:05,039 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 2) (<= main_~x~0 2)) [2022-03-19 04:50:05,040 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse36 (+ main_~x~0 (* (- 1) main_~b~0))) (.cse34 (* main_~y~0 main_~r~0))) (let ((.cse35 (div .cse36 .cse34))) (let ((.cse1 (<= 1 main_~c~0)) (.cse2 (= main_~s~0 0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse12 (<= main_~x~0 main_~a~0)) (.cse13 (<= 1 main_~b~0)) (.cse18 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse19 (= (mod .cse36 .cse34) 0)) (.cse20 (= (+ (* main_~r~0 .cse35) main_~s~0) 0)) (.cse21 (<= 1 main_~x~0)) (.cse22 (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse35)))) (.cse4 (= main_~p~0 0)) (.cse6 (= main_~r~0 1)) (.cse16 (< main_~b~0 main_~c~0)) (.cse9 (<= main_~c~0 2)) (.cse23 (= .cse34 main_~a~0)) (.cse14 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (<= main_~y~0 2)) (.cse10 (= main_~d~0 1)) (.cse26 (= main_~r~0 0)) (.cse5 (= main_~k~0 0)) (.cse27 (= main_~s~0 1)) (.cse15 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse28 (<= 1 main_~a~0)) (.cse29 (= main_~b~0 main_~y~0)) (.cse17 (<= main_~b~0 (div main_~v~0 2))) (.cse30 (= main_~q~0 0)) (.cse24 (<= 1 main_~y~0)) (.cse31 (= main_~a~0 main_~x~0)) (.cse32 (= main_~c~0 main_~x~0)) (.cse25 (<= main_~x~0 2)) (.cse33 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< main_~v~0 main_~c~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse15 .cse7 .cse16 .cse8 .cse9 .cse11 .cse17 .cse12 .cse13 .cse14) (and (= main_~b~0 main_~v~0) .cse18 .cse19 .cse20 .cse21 .cse22 .cse4 .cse6 .cse16 .cse9 .cse10 (<= main_~a~0 2) .cse23 .cse14 .cse24 .cse25) (and .cse0 .cse18 .cse19 .cse20 .cse21 .cse3 .cse22 .cse4 .cse6 .cse15 .cse16 .cse9 .cse23 .cse14 .cse24 .cse25) (and .cse0 .cse26 .cse3 .cse5 .cse27 .cse28 .cse29 .cse10 .cse30 .cse24 .cse31 .cse32 .cse25 .cse33) (and .cse26 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse27 .cse15 .cse28 .cse29 (= main_~d~0 2) .cse17 .cse30 .cse24 .cse31 .cse32 .cse25 .cse33))))) [2022-03-19 04:50:05,040 INFO L878 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse36 (+ main_~x~0 (* (- 1) main_~b~0))) (.cse34 (* main_~y~0 main_~r~0))) (let ((.cse35 (div .cse36 .cse34))) (let ((.cse1 (<= 1 main_~c~0)) (.cse2 (= main_~s~0 0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse8 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse12 (<= main_~x~0 main_~a~0)) (.cse13 (<= 1 main_~b~0)) (.cse18 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse19 (= (mod .cse36 .cse34) 0)) (.cse20 (= (+ (* main_~r~0 .cse35) main_~s~0) 0)) (.cse21 (<= 1 main_~x~0)) (.cse22 (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse35)))) (.cse4 (= main_~p~0 0)) (.cse6 (= main_~r~0 1)) (.cse16 (< main_~b~0 main_~c~0)) (.cse9 (<= main_~c~0 2)) (.cse23 (= .cse34 main_~a~0)) (.cse14 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (<= main_~y~0 2)) (.cse10 (= main_~d~0 1)) (.cse26 (= main_~r~0 0)) (.cse5 (= main_~k~0 0)) (.cse27 (= main_~s~0 1)) (.cse15 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse28 (<= 1 main_~a~0)) (.cse29 (= main_~b~0 main_~y~0)) (.cse17 (<= main_~b~0 (div main_~v~0 2))) (.cse30 (= main_~q~0 0)) (.cse24 (<= 1 main_~y~0)) (.cse31 (= main_~a~0 main_~x~0)) (.cse32 (= main_~c~0 main_~x~0)) (.cse25 (<= main_~x~0 2)) (.cse33 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< main_~v~0 main_~c~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse15 .cse7 .cse16 .cse8 .cse9 .cse11 .cse17 .cse12 .cse13 .cse14) (and (= main_~b~0 main_~v~0) .cse18 .cse19 .cse20 .cse21 .cse22 .cse4 .cse6 .cse16 .cse9 .cse10 (<= main_~a~0 2) .cse23 .cse14 .cse24 .cse25) (and .cse0 .cse18 .cse19 .cse20 .cse21 .cse3 .cse22 .cse4 .cse6 .cse15 .cse16 .cse9 .cse23 .cse14 .cse24 .cse25) (and .cse0 .cse26 .cse3 .cse5 .cse27 .cse28 .cse29 .cse10 .cse30 .cse24 .cse31 .cse32 .cse25 .cse33) (and .cse26 (<= (* main_~b~0 2) main_~c~0) .cse5 .cse27 .cse15 .cse28 .cse29 (= main_~d~0 2) .cse17 .cse30 .cse24 .cse31 .cse32 .cse25 .cse33))))) [2022-03-19 04:50:05,040 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 18 76) the Hoare annotation is: true [2022-03-19 04:50:05,040 INFO L878 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse28 (* main_~b~0 main_~k~0))) (let ((.cse14 (+ main_~c~0 .cse28))) (let ((.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse2 (= main_~x~0 .cse14)) (.cse5 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse9 (not (<= main_~x~0 (* main_~c~0 2)))) (.cse1 (= main_~r~0 0)) (.cse3 (<= main_~y~0 2)) (.cse4 (= main_~s~0 1)) (.cse6 (<= 1 main_~a~0)) (.cse7 (= main_~b~0 main_~y~0)) (.cse8 (= main_~q~0 0)) (.cse10 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse12 (<= main_~x~0 2)) (.cse13 (= main_~p~0 1)) (.cse24 (= main_~s~0 0)) (.cse18 (= main_~p~0 0)) (.cse30 (= main_~k~0 0)) (.cse19 (= main_~r~0 1)) (.cse26 (= main_~a~0 main_~y~0)) (.cse20 (< main_~b~0 main_~c~0)) (.cse27 (= main_~b~0 main_~x~0)) (.cse21 (<= main_~c~0 2)) (.cse22 (<= main_~a~0 2)) (.cse29 (<= 1 main_~b~0)) (.cse23 (= main_~q~0 1))) (or (and .cse0 .cse1 (<= main_~v~0 main_~b~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse15 (+ main_~x~0 (* (- 1) main_~b~0))) (.cse16 (* main_~y~0 main_~r~0))) (let ((.cse17 (div .cse15 .cse16))) (and (= main_~a~0 .cse14) (= (mod .cse15 .cse16) 0) (= (+ (* main_~r~0 .cse17) main_~s~0) 0) (<= 1 main_~x~0) (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse17))) .cse18 .cse19 .cse20 .cse21 .cse22 (= .cse16 main_~a~0) .cse23 .cse10 .cse12))) (let ((.cse25 (* main_~b~0 2))) (and .cse0 .cse24 .cse18 (= (+ main_~c~0 .cse25) main_~y~0) (< main_~x~0 main_~y~0) .cse19 .cse5 .cse26 .cse27 .cse22 (= .cse28 .cse25) .cse29 .cse23)) (and (<= main_~b~0 (div (div (+ (* (- 1) main_~c~0) 2) 2) 2)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= main_~b~0 1) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse3 .cse30 .cse4 .cse6 .cse7 .cse8 .cse10 .cse11 (= main_~c~0 main_~x~0) .cse12 .cse13) (and .cse24 .cse18 .cse30 .cse19 .cse26 .cse20 .cse27 .cse21 (< main_~x~0 main_~a~0) .cse22 .cse29 .cse23))))) [2022-03-19 04:50:05,040 INFO L878 garLoopResultBuilder]: At program point L42-3(lines 42 62) the Hoare annotation is: (let ((.cse7 (* main_~b~0 main_~k~0)) (.cse8 (* main_~b~0 2))) (let ((.cse5 (+ main_~c~0 .cse8)) (.cse13 (= main_~b~0 main_~y~0)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse11 (= main_~r~0 0)) (.cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse17 (= main_~x~0 (+ main_~c~0 .cse7))) (.cse2 (<= 1 main_~x~0)) (.cse3 (<= main_~b~0 2)) (.cse4 (<= main_~y~0 2)) (.cse12 (= main_~s~0 1)) (.cse18 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse6 (not (<= main_~b~0 main_~c~0))) (.cse14 (= main_~q~0 0)) (.cse19 (not (<= main_~x~0 (* main_~c~0 2)))) (.cse9 (<= 1 main_~y~0)) (.cse15 (= main_~a~0 main_~x~0)) (.cse10 (<= main_~x~0 2)) (.cse16 (= main_~p~0 1))) (or (and .cse0 (= main_~s~0 0) .cse1 .cse2 .cse3 .cse4 (= main_~p~0 0) (not (<= main_~a~0 main_~x~0)) (= main_~r~0 1) (< main_~x~0 .cse5) (= main_~a~0 main_~y~0) (= main_~b~0 main_~x~0) .cse6 (= .cse7 .cse8) .cse9 .cse10) (and .cse0 (= .cse5 main_~x~0) .cse11 .cse2 .cse3 .cse4 .cse12 (<= 0 main_~c~0) .cse13 .cse6 (= main_~k~0 2) .cse14 .cse9 .cse15 .cse10 .cse16) (and .cse0 .cse11 .cse1 .cse17 .cse2 .cse3 .cse4 .cse12 (<= main_~b~0 1) .cse18 .cse6 .cse14 .cse19 .cse9 .cse15 .cse10 .cse16) (and .cse11 .cse4 (= main_~k~0 0) .cse12 (<= 1 main_~a~0) .cse13 .cse14 (< main_~c~0 main_~b~0) .cse15 (= main_~c~0 main_~x~0) .cse16) (and (<= main_~b~0 (div (div (+ (* (- 1) main_~c~0) 2) 2) 2)) .cse0 .cse11 .cse1 .cse17 .cse2 .cse3 .cse4 .cse12 .cse18 .cse6 .cse14 .cse19 .cse9 .cse15 .cse10 .cse16) (and .cse0 .cse11 (<= main_~v~0 main_~b~0) .cse1 .cse17 .cse2 .cse3 .cse4 .cse12 .cse18 .cse6 .cse14 .cse19 .cse9 .cse15 .cse10 .cse16)))) [2022-03-19 04:50:05,040 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 76) the Hoare annotation is: true [2022-03-19 04:50:05,040 INFO L878 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= 1 main_~x~0) (<= main_~y~0 2) (<= 1 main_~y~0) (<= main_~x~0 2)) [2022-03-19 04:50:05,040 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-03-19 04:50:05,040 INFO L878 garLoopResultBuilder]: At program point L22-1(line 22) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-03-19 04:50:05,040 INFO L878 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse35 (+ main_~x~0 (* (- 1) main_~b~0))) (.cse33 (* main_~y~0 main_~r~0))) (let ((.cse34 (div .cse35 .cse33))) (let ((.cse1 (<= 1 main_~c~0)) (.cse7 (= main_~a~0 main_~y~0)) (.cse9 (= main_~b~0 main_~x~0)) (.cse11 (< main_~x~0 main_~a~0)) (.cse13 (<= main_~x~0 main_~a~0)) (.cse14 (<= 1 main_~b~0)) (.cse17 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse18 (= (mod .cse35 .cse33) 0)) (.cse19 (= (+ (* main_~r~0 .cse34) main_~s~0) 0)) (.cse20 (<= 1 main_~x~0)) (.cse21 (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse34)))) (.cse3 (= main_~p~0 0)) (.cse5 (= main_~r~0 1)) (.cse8 (< main_~b~0 main_~c~0)) (.cse10 (<= main_~c~0 2)) (.cse22 (= .cse33 main_~a~0)) (.cse15 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse2 (<= main_~y~0 2)) (.cse16 (= main_~d~0 1)) (.cse25 (= main_~r~0 0)) (.cse4 (= main_~k~0 0)) (.cse26 (= main_~s~0 1)) (.cse6 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse27 (<= 1 main_~a~0)) (.cse28 (= main_~b~0 main_~y~0)) (.cse12 (<= main_~b~0 (div main_~v~0 2))) (.cse29 (= main_~q~0 0)) (.cse23 (<= 1 main_~y~0)) (.cse30 (= main_~a~0 main_~x~0)) (.cse31 (= main_~c~0 main_~x~0)) (.cse24 (<= main_~x~0 2)) (.cse32 (= main_~p~0 1))) (or (and .cse0 .cse1 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 (= main_~s~0 0) .cse2 .cse3 .cse4 .cse5 .cse7 .cse9 .cse10 .cse16 .cse11 .cse13 .cse14 .cse15 (< main_~v~0 main_~c~0)) (and (= main_~b~0 main_~v~0) .cse17 .cse18 .cse19 .cse20 .cse21 .cse3 .cse5 .cse8 .cse10 .cse16 (<= main_~a~0 2) .cse22 .cse15 .cse23 .cse24) (and .cse0 .cse17 .cse18 .cse19 .cse20 .cse2 .cse21 .cse3 .cse5 .cse6 .cse8 .cse10 .cse22 .cse15 .cse23 .cse24) (and .cse0 .cse25 .cse2 .cse4 .cse26 .cse27 .cse28 .cse16 .cse29 .cse23 .cse30 .cse31 .cse24 .cse32) (and .cse25 (<= (* main_~b~0 2) main_~c~0) .cse4 .cse26 .cse6 .cse27 .cse28 (= main_~d~0 2) .cse12 .cse29 .cse23 .cse30 .cse31 .cse24 .cse32))))) [2022-03-19 04:50:05,041 INFO L878 garLoopResultBuilder]: At program point L43(lines 43 44) the Hoare annotation is: (let ((.cse28 (* main_~b~0 main_~k~0))) (let ((.cse14 (+ main_~c~0 .cse28))) (let ((.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse2 (= main_~x~0 .cse14)) (.cse5 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse9 (not (<= main_~x~0 (* main_~c~0 2)))) (.cse1 (= main_~r~0 0)) (.cse3 (<= main_~y~0 2)) (.cse4 (= main_~s~0 1)) (.cse6 (<= 1 main_~a~0)) (.cse7 (= main_~b~0 main_~y~0)) (.cse8 (= main_~q~0 0)) (.cse10 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse12 (<= main_~x~0 2)) (.cse13 (= main_~p~0 1)) (.cse24 (= main_~s~0 0)) (.cse18 (= main_~p~0 0)) (.cse30 (= main_~k~0 0)) (.cse19 (= main_~r~0 1)) (.cse26 (= main_~a~0 main_~y~0)) (.cse20 (< main_~b~0 main_~c~0)) (.cse27 (= main_~b~0 main_~x~0)) (.cse21 (<= main_~c~0 2)) (.cse22 (<= main_~a~0 2)) (.cse29 (<= 1 main_~b~0)) (.cse23 (= main_~q~0 1))) (or (and .cse0 .cse1 (<= main_~v~0 main_~b~0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (let ((.cse15 (+ main_~x~0 (* (- 1) main_~b~0))) (.cse16 (* main_~y~0 main_~r~0))) (let ((.cse17 (div .cse15 .cse16))) (and (= main_~a~0 .cse14) (= (mod .cse15 .cse16) 0) (= (+ (* main_~r~0 .cse17) main_~s~0) 0) (<= 1 main_~x~0) (< main_~x~0 (* 2 (* main_~y~0 main_~r~0 .cse17))) .cse18 .cse19 .cse20 .cse21 .cse22 (= .cse16 main_~a~0) .cse23 .cse10 .cse12))) (let ((.cse25 (* main_~b~0 2))) (and .cse0 .cse24 .cse18 (= (+ main_~c~0 .cse25) main_~y~0) (< main_~x~0 main_~y~0) .cse19 .cse5 .cse26 .cse27 .cse22 (= .cse28 .cse25) .cse29 .cse23)) (and (<= main_~b~0 (div (div (+ (* (- 1) main_~c~0) 2) 2) 2)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= main_~b~0 1) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse3 .cse30 .cse4 .cse6 .cse7 .cse8 .cse10 .cse11 (= main_~c~0 main_~x~0) .cse12 .cse13) (and .cse24 .cse18 .cse30 .cse19 .cse26 .cse20 .cse27 .cse21 (< main_~x~0 main_~a~0) .cse22 .cse29 .cse23))))) [2022-03-19 04:50:05,041 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-19 04:50:05,041 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-19 04:50:05,041 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-19 04:50:05,041 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-19 04:50:05,041 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-19 04:50:05,041 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-19 04:50:05,041 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-19 04:50:05,041 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-03-19 04:50:05,041 INFO L878 garLoopResultBuilder]: At program point L12(lines 12 13) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-19 04:50:05,041 INFO L878 garLoopResultBuilder]: At program point L11(lines 11 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-03-19 04:50:05,041 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 10 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-03-19 04:50:05,041 INFO L878 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-03-19 04:50:05,041 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-19 04:50:05,043 INFO L718 BasicCegarLoop]: Path program histogram: [18, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2] [2022-03-19 04:50:05,044 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 04:50:05,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 04:50:05 BoogieIcfgContainer [2022-03-19 04:50:05,065 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 04:50:05,066 INFO L158 Benchmark]: Toolchain (without parser) took 431924.27ms. Allocated memory was 255.9MB in the beginning and 443.5MB in the end (delta: 187.7MB). Free memory was 231.1MB in the beginning and 410.6MB in the end (delta: -179.5MB). Peak memory consumption was 271.5MB. Max. memory is 8.0GB. [2022-03-19 04:50:05,066 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 219.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 04:50:05,066 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.63ms. Allocated memory is still 255.9MB. Free memory was 230.9MB in the beginning and 230.1MB in the end (delta: 795.4kB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. [2022-03-19 04:50:05,066 INFO L158 Benchmark]: Boogie Preprocessor took 37.78ms. Allocated memory is still 255.9MB. Free memory was 230.1MB in the beginning and 228.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-19 04:50:05,066 INFO L158 Benchmark]: RCFGBuilder took 269.97ms. Allocated memory is still 255.9MB. Free memory was 228.5MB in the beginning and 217.0MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-19 04:50:05,067 INFO L158 Benchmark]: TraceAbstraction took 431394.87ms. Allocated memory was 255.9MB in the beginning and 443.5MB in the end (delta: 187.7MB). Free memory was 216.5MB in the beginning and 410.6MB in the end (delta: -194.1MB). Peak memory consumption was 257.6MB. Max. memory is 8.0GB. [2022-03-19 04:50:05,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 219.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.63ms. Allocated memory is still 255.9MB. Free memory was 230.9MB in the beginning and 230.1MB in the end (delta: 795.4kB). Peak memory consumption was 8.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.78ms. Allocated memory is still 255.9MB. Free memory was 230.1MB in the beginning and 228.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 269.97ms. Allocated memory is still 255.9MB. Free memory was 228.5MB in the beginning and 217.0MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 431394.87ms. Allocated memory was 255.9MB in the beginning and 443.5MB in the end (delta: 187.7MB). Free memory was 216.5MB in the beginning and 410.6MB in the end (delta: -194.1MB). Peak memory consumption was 257.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 431.3s, OverallIterations: 25, TraceHistogramMax: 29, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 64.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1162 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1048 mSDsluCounter, 9006 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 296 IncrementalHoareTripleChecker+Unchecked, 7640 mSDsCounter, 1153 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6224 IncrementalHoareTripleChecker+Invalid, 7673 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1153 mSolverCounterUnsat, 1366 mSDtfsCounter, 6224 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4494 GetRequests, 3911 SyntacticMatches, 25 SemanticMatches, 558 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2893 ImplicationChecksByTransitivity, 31.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred in iteration=16, InterpolantAutomatonStates: 306, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 25 MinimizatonAttempts, 333 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 2380 PreInvPairs, 2797 NumberOfFragments, 4391 HoareAnnotationTreeSize, 2380 FomulaSimplifications, 3738 FormulaSimplificationTreeSizeReduction, 27.1s HoareSimplificationTime, 40 FomulaSimplificationsInter, 1614736 FormulaSimplificationTreeSizeReductionInter, 37.3s 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: 49]: Loop Invariant Derived loop invariant: (((((((((((((((((((v == d * b && 1 <= c) && s == 0) && y <= 2) && p == 0) && k == 0) && r == 1) && a == y) && b == x) && c <= 2) && d == 1) && x < a) && x <= a) && 1 <= b) && q == 1) && v < c) || ((((((((((((((((v == d * b && 1 <= c) && s == 0) && y <= 2) && p == 0) && k == 0) && r == 1) && -1 * v / -2 <= b) && a == y) && b < c) && b == x) && c <= 2) && x < a) && b <= v / 2) && x <= a) && 1 <= b) && q == 1)) || (((((((((((((((b == v && a == c + b * k) && (x + -1 * b) % (y * r) == 0) && r * ((x + -1 * b) / (y * r)) + s == 0) && 1 <= x) && x < 2 * (y * r * ((x + -1 * b) / (y * r)))) && p == 0) && r == 1) && b < c) && c <= 2) && d == 1) && a <= 2) && y * r == a) && q == 1) && 1 <= y) && x <= 2)) || (((((((((((((((v == d * b && a == c + b * k) && (x + -1 * b) % (y * r) == 0) && r * ((x + -1 * b) / (y * r)) + s == 0) && 1 <= x) && y <= 2) && x < 2 * (y * r * ((x + -1 * b) / (y * r)))) && p == 0) && r == 1) && -1 * v / -2 <= b) && b < c) && c <= 2) && y * r == a) && q == 1) && 1 <= y) && x <= 2)) || (((((((((((((v == d * b && r == 0) && y <= 2) && k == 0) && s == 1) && 1 <= a) && b == y) && d == 1) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1)) || ((((((((((((((r == 0 && b * 2 <= c) && k == 0) && s == 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && d == 2) && b <= v / 2) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((1 <= c && s == 0) && p == 0) && r == 1) && a == y) && b == x) && c <= 2) && x < a) && a <= 2) && 1 <= b) && q == 1) || ((((((((r == 0 && x * 2 + b == y) && y <= 2) && s + r * (x * 2 / x) == 1) && x < y) && x == y * r + p * x) && q + p * (x * 2 / x) == 0) && a == x) && y < x * 3)) || ((((((((((((x + -1 * b) % (y * r) == 0 && r * ((x + -1 * b) / (y * r)) + s == 0) && 1 <= x) && y <= 2) && x < 2 * (y * r * ((x + -1 * b) / (y * r)))) && p == 0) && r == 1) && c <= 2) && y * r == a) && q == 1) && 1 <= y) && x <= 2)) || (((((((((r == 0 && y <= 2) && s == 1) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1)) || ((((((((a * 2 + b == x && p == 0) && r == 1) && a == y) && p * 2 + q == 1) && a * 2 <= x) && x < a * 3) && x <= 2) && s + r * 2 == 0) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((((((((((((v == d * b && r == 0) && v <= b) && x == c + b * k) && y <= 2) && s == 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && q == 0) && !(x <= c * 2)) && 1 <= y) && a == x) && x <= 2) && p == 1) || (((((((((((((a == c + b * k && (x + -1 * b) % (y * r) == 0) && r * ((x + -1 * b) / (y * r)) + s == 0) && 1 <= x) && x < 2 * (y * r * ((x + -1 * b) / (y * r)))) && p == 0) && r == 1) && b < c) && c <= 2) && a <= 2) && y * r == a) && q == 1) && 1 <= y) && x <= 2)) || ((((((((((((v == d * b && s == 0) && p == 0) && c + b * 2 == y) && x < y) && r == 1) && -1 * v / -2 <= b) && a == y) && b == x) && a <= 2) && b * k == b * 2) && 1 <= b) && q == 1)) || ((((((((((((((b <= (-1 * c + 2) / 2 / 2 && v == d * b) && r == 0) && x == c + b * k) && y <= 2) && s == 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && q == 0) && !(x <= c * 2)) && 1 <= y) && a == x) && x <= 2) && p == 1)) || ((((((((((((((v == d * b && r == 0) && x == c + b * k) && y <= 2) && s == 1) && b <= 1) && -1 * v / -2 <= b) && 1 <= a) && b == y) && q == 0) && !(x <= c * 2)) && 1 <= y) && a == x) && x <= 2) && p == 1)) || (((((((((((r == 0 && y <= 2) && k == 0) && s == 1) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1)) || (((((((((((s == 0 && p == 0) && k == 0) && r == 1) && a == y) && b < c) && b == x) && c <= 2) && x < a) && a <= 2) && 1 <= b) && q == 1) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: !(\old(cond) == 0) && cond == \old(cond) - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-03-19 04:50:05,236 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...