/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 11:52:31,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 11:52:31,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 11:52:31,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 11:52:31,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 11:52:31,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 11:52:31,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 11:52:31,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 11:52:31,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 11:52:31,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 11:52:31,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 11:52:31,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 11:52:31,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 11:52:31,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 11:52:31,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 11:52:31,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 11:52:31,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 11:52:31,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 11:52:31,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 11:52:31,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 11:52:31,429 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 11:52:31,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 11:52:31,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 11:52:31,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 11:52:31,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 11:52:31,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 11:52:31,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 11:52:31,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 11:52:31,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 11:52:31,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 11:52:31,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 11:52:31,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 11:52:31,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 11:52:31,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 11:52:31,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 11:52:31,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 11:52:31,473 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 11:52:31,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 11:52:31,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 11:52:31,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 11:52:31,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 11:52:31,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 11:52:31,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 11:52:31,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 11:52:31,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 11:52:31,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 11:52:31,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 11:52:31,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 11:52:31,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 11:52:31,476 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 11:52:31,476 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 11:52:31,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 11:52:31,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 11:52:31,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 11:52:31,701 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 11:52:31,702 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 11:52:31,703 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-04-06 11:52:31,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e3ff4d79/d46d9e4b377b4fccb5870247e3500e3b/FLAG544930375 [2022-04-06 11:52:32,111 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 11:52:32,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound2.c [2022-04-06 11:52:32,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e3ff4d79/d46d9e4b377b4fccb5870247e3500e3b/FLAG544930375 [2022-04-06 11:52:32,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e3ff4d79/d46d9e4b377b4fccb5870247e3500e3b [2022-04-06 11:52:32,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 11:52:32,127 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 11:52:32,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 11:52:32,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 11:52:32,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 11:52:32,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ca1e63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32, skipping insertion in model container [2022-04-06 11:52:32,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 11:52:32,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 11:52:32,272 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] [2022-04-06 11:52:32,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 11:52:32,288 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 11:52:32,295 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] [2022-04-06 11:52:32,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 11:52:32,310 INFO L208 MainTranslator]: Completed translation [2022-04-06 11:52:32,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32 WrapperNode [2022-04-06 11:52:32,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 11:52:32,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 11:52:32,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 11:52:32,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 11:52:32,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 11:52:32,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 11:52:32,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 11:52:32,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 11:52:32,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 11:52:32,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:32,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-06 11:52:32,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-06 11:52:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 11:52:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 11:52:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 11:52:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 11:52:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 11:52:32,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 11:52:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 11:52:32,379 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 11:52:32,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 11:52:32,421 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 11:52:32,422 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 11:52:32,514 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 11:52:32,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 11:52:32,519 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-06 11:52:32,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:52:32 BoogieIcfgContainer [2022-04-06 11:52:32,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 11:52:32,522 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 11:52:32,522 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 11:52:32,523 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 11:52:32,527 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:52:32" (1/1) ... [2022-04-06 11:52:32,529 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 11:52:32,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 11:52:32 BasicIcfg [2022-04-06 11:52:32,546 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 11:52:32,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 11:52:32,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 11:52:32,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 11:52:32,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 11:52:32" (1/4) ... [2022-04-06 11:52:32,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257a2266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 11:52:32, skipping insertion in model container [2022-04-06 11:52:32,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 11:52:32" (2/4) ... [2022-04-06 11:52:32,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257a2266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 11:52:32, skipping insertion in model container [2022-04-06 11:52:32,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 11:52:32" (3/4) ... [2022-04-06 11:52:32,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257a2266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 11:52:32, skipping insertion in model container [2022-04-06 11:52:32,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 11:52:32" (4/4) ... [2022-04-06 11:52:32,550 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.cqvasr [2022-04-06 11:52:32,553 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 11:52:32,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 11:52:32,603 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 11:52:32,607 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 11:52:32,608 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 11:52:32,621 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) [2022-04-06 11:52:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-04-06 11:52:32,624 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:32,625 INFO L499 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] [2022-04-06 11:52:32,625 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:32,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash 958536290, now seen corresponding path program 1 times [2022-04-06 11:52:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:32,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94402983] [2022-04-06 11:52:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:32,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 11:52:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:32,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 11:52:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:32,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-06 11:52:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:32,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-06 11:52:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-06 11:52:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:32,805 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 11:52:32,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:32,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94402983] [2022-04-06 11:52:32,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94402983] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:52:32,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:52:32,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 11:52:32,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573168915] [2022-04-06 11:52:32,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:52:32,811 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 11:52:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:32,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 11:52:32,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 11:52:32,830 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) [2022-04-06 11:52:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:32,909 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2022-04-06 11:52:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 11:52:32,911 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 [2022-04-06 11:52:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:32,915 INFO L225 Difference]: With dead ends: 73 [2022-04-06 11:52:32,915 INFO L226 Difference]: Without dead ends: 35 [2022-04-06 11:52:32,919 INFO L912 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 [2022-04-06 11:52:32,922 INFO L913 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, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:32,923 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:52:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-06 11:52:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-06 11:52:32,946 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) [2022-04-06 11:52:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-04-06 11:52:32,948 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 33 [2022-04-06 11:52:32,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:32,948 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-04-06 11:52:32,948 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) [2022-04-06 11:52:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-04-06 11:52:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-04-06 11:52:32,950 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:32,950 INFO L499 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] [2022-04-06 11:52:32,950 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 11:52:32,950 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:32,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash 641145651, now seen corresponding path program 1 times [2022-04-06 11:52:32,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:32,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236384973] [2022-04-06 11:52:32,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:32,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:32,974 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:32,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721519826] [2022-04-06 11:52:32,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:32,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:32,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:32,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:32,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-06 11:52:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:33,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 11:52:33,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 11:52:33,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 11:52:33,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236384973] [2022-04-06 11:52:33,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:33,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721519826] [2022-04-06 11:52:33,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721519826] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:52:33,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:52:33,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-06 11:52:33,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054432213] [2022-04-06 11:52:33,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:52:33,175 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 11:52:33,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:33,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 11:52:33,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-06 11:52:33,176 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 11:52:33,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:33,293 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2022-04-06 11:52:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 11:52:33,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-04-06 11:52:33,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:33,304 INFO L225 Difference]: With dead ends: 54 [2022-04-06 11:52:33,304 INFO L226 Difference]: Without dead ends: 47 [2022-04-06 11:52:33,305 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-04-06 11:52:33,306 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:33,306 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 133 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 11:52:33,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-04-06 11:52:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2022-04-06 11:52:33,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 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) [2022-04-06 11:52:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-04-06 11:52:33,314 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 34 [2022-04-06 11:52:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:33,314 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-04-06 11:52:33,316 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-04-06 11:52:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-04-06 11:52:33,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-06 11:52:33,317 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:33,317 INFO L499 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, 1, 1, 1] [2022-04-06 11:52:33,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:33,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:33,518 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:33,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:33,518 INFO L85 PathProgramCache]: Analyzing trace with hash 283168444, now seen corresponding path program 1 times [2022-04-06 11:52:33,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:33,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512995320] [2022-04-06 11:52:33,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:33,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:33,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:33,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279497638] [2022-04-06 11:52:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:33,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:33,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:33,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-06 11:52:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:33,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-06 11:52:33,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 11:52:33,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:52:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 11:52:34,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:34,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512995320] [2022-04-06 11:52:34,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:34,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279497638] [2022-04-06 11:52:34,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279497638] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 11:52:34,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 11:52:34,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14 [2022-04-06 11:52:34,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548591336] [2022-04-06 11:52:34,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:52:34,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-06 11:52:34,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:34,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-06 11:52:34,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-04-06 11:52:34,047 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-04-06 11:52:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:34,124 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2022-04-06 11:52:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-06 11:52:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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 37 [2022-04-06 11:52:34,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:34,125 INFO L225 Difference]: With dead ends: 53 [2022-04-06 11:52:34,125 INFO L226 Difference]: Without dead ends: 51 [2022-04-06 11:52:34,126 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-04-06 11:52:34,126 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 16 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:34,127 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 196 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 11:52:34,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-04-06 11:52:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-04-06 11:52:34,134 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) [2022-04-06 11:52:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-04-06 11:52:34,135 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 37 [2022-04-06 11:52:34,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:34,136 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-04-06 11:52:34,136 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-04-06 11:52:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-04-06 11:52:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-04-06 11:52:34,137 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:34,137 INFO L499 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] [2022-04-06 11:52:34,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-06 11:52:34,357 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-06 11:52:34,357 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash 656144812, now seen corresponding path program 1 times [2022-04-06 11:52:34,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:34,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725827737] [2022-04-06 11:52:34,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:34,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:34,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:34,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551303213] [2022-04-06 11:52:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:34,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:34,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:34,378 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:34,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-06 11:52:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:34,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-06 11:52:34,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 11:52:34,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:52:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 11:52:34,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:34,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725827737] [2022-04-06 11:52:34,572 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:34,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551303213] [2022-04-06 11:52:34,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551303213] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:52:34,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:52:34,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-06 11:52:34,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352772527] [2022-04-06 11:52:34,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:52:34,574 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 11:52:34,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:34,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 11:52:34,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-06 11:52:34,575 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-04-06 11:52:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:34,743 INFO L93 Difference]: Finished difference Result 103 states and 143 transitions. [2022-04-06 11:52:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 11:52:34,744 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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 [2022-04-06 11:52:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:34,745 INFO L225 Difference]: With dead ends: 103 [2022-04-06 11:52:34,746 INFO L226 Difference]: Without dead ends: 96 [2022-04-06 11:52:34,746 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-04-06 11:52:34,747 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 55 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:34,747 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 275 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 11:52:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-04-06 11:52:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2022-04-06 11:52:34,757 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) [2022-04-06 11:52:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2022-04-06 11:52:34,758 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 39 [2022-04-06 11:52:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:34,758 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2022-04-06 11:52:34,758 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-04-06 11:52:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2022-04-06 11:52:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 11:52:34,759 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:34,759 INFO L499 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, 1, 1, 1] [2022-04-06 11:52:34,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:34,969 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:34,970 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2079765955, now seen corresponding path program 1 times [2022-04-06 11:52:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:34,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724718322] [2022-04-06 11:52:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:34,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:34,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:34,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605252212] [2022-04-06 11:52:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:34,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:34,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:34,982 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:34,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-06 11:52:35,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:35,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2022-04-06 11:52:35,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-04-06 11:52:35,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:52:35,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724718322] [2022-04-06 11:52:35,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605252212] [2022-04-06 11:52:35,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605252212] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 11:52:35,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 11:52:35,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-04-06 11:52:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312454889] [2022-04-06 11:52:35,271 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 11:52:35,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 11:52:35,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:35,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 11:52:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-04-06 11:52:35,272 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-06 11:52:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:35,356 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2022-04-06 11:52:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-06 11:52:35,357 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 42 [2022-04-06 11:52:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:35,358 INFO L225 Difference]: With dead ends: 79 [2022-04-06 11:52:35,358 INFO L226 Difference]: Without dead ends: 77 [2022-04-06 11:52:35,358 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-04-06 11:52:35,359 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 36 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:35,359 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 177 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 11:52:35,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-04-06 11:52:35,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-04-06 11:52:35,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-04-06 11:52:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2022-04-06 11:52:35,380 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 42 [2022-04-06 11:52:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:35,380 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2022-04-06 11:52:35,380 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-04-06 11:52:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2022-04-06 11:52:35,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-04-06 11:52:35,381 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:35,381 INFO L499 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] [2022-04-06 11:52:35,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:35,584 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:35,584 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:35,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 446575011, now seen corresponding path program 1 times [2022-04-06 11:52:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:35,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082036353] [2022-04-06 11:52:35,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:35,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:35,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:35,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776853448] [2022-04-06 11:52:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:35,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:35,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:35,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:35,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-06 11:52:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:35,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 30 conjunts are in the unsatisfiable core [2022-04-06 11:52:35,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 11:52:35,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:52:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 11:52:36,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:36,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082036353] [2022-04-06 11:52:36,072 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:36,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776853448] [2022-04-06 11:52:36,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776853448] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:52:36,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:52:36,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 16 [2022-04-06 11:52:36,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11540802] [2022-04-06 11:52:36,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:52:36,074 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 11:52:36,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:36,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 11:52:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-04-06 11:52:36,075 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-06 11:52:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:36,436 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2022-04-06 11:52:36,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 11:52:36,437 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2022-04-06 11:52:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:36,438 INFO L225 Difference]: With dead ends: 118 [2022-04-06 11:52:36,438 INFO L226 Difference]: Without dead ends: 116 [2022-04-06 11:52:36,438 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2022-04-06 11:52:36,439 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 103 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:36,439 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 255 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 11:52:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-04-06 11:52:36,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 105. [2022-04-06 11:52:36,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 72 states have internal predecessors, (89), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-04-06 11:52:36,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 141 transitions. [2022-04-06 11:52:36,452 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 141 transitions. Word has length 42 [2022-04-06 11:52:36,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:36,452 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 141 transitions. [2022-04-06 11:52:36,452 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-06 11:52:36,452 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 141 transitions. [2022-04-06 11:52:36,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 11:52:36,453 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:36,453 INFO L499 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] [2022-04-06 11:52:36,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:36,667 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:36,668 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:36,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1977261252, now seen corresponding path program 1 times [2022-04-06 11:52:36,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:36,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867770270] [2022-04-06 11:52:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:36,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:36,680 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:36,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797574025] [2022-04-06 11:52:36,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:36,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:36,681 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:36,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-06 11:52:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:36,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 11:52:36,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:36,796 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-04-06 11:52:36,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 11:52:36,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:36,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867770270] [2022-04-06 11:52:36,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:36,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797574025] [2022-04-06 11:52:36,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797574025] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:52:36,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:52:36,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 11:52:36,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206431601] [2022-04-06 11:52:36,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:52:36,798 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 11:52:36,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:36,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 11:52:36,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 11:52:36,798 INFO L87 Difference]: Start difference. First operand 105 states and 141 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) [2022-04-06 11:52:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:36,838 INFO L93 Difference]: Finished difference Result 151 states and 213 transitions. [2022-04-06 11:52:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 11:52:36,839 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 [2022-04-06 11:52:36,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:36,840 INFO L225 Difference]: With dead ends: 151 [2022-04-06 11:52:36,840 INFO L226 Difference]: Without dead ends: 149 [2022-04-06 11:52:36,840 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-06 11:52:36,841 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:36,841 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 146 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:52:36,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-04-06 11:52:36,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2022-04-06 11:52:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 89 states have internal predecessors, (113), 47 states have call successors, (47), 8 states have call predecessors, (47), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-04-06 11:52:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 205 transitions. [2022-04-06 11:52:36,883 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 205 transitions. Word has length 47 [2022-04-06 11:52:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:36,885 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 205 transitions. [2022-04-06 11:52:36,885 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) [2022-04-06 11:52:36,885 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 205 transitions. [2022-04-06 11:52:36,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 11:52:36,889 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:36,890 INFO L499 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] [2022-04-06 11:52:36,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:37,090 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:37,090 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash -846684234, now seen corresponding path program 1 times [2022-04-06 11:52:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:37,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896269471] [2022-04-06 11:52:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:37,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:37,099 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:37,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1118818959] [2022-04-06 11:52:37,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:37,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:37,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:37,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:37,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-06 11:52:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:37,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2022-04-06 11:52:37,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-04-06 11:52:37,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:52:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 11:52:37,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:37,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896269471] [2022-04-06 11:52:37,663 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:37,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118818959] [2022-04-06 11:52:37,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118818959] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:52:37,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:52:37,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 18 [2022-04-06 11:52:37,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757279396] [2022-04-06 11:52:37,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:52:37,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 11:52:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:37,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 11:52:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-04-06 11:52:37,664 INFO L87 Difference]: Start difference. First operand 143 states and 205 transitions. Second operand has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-04-06 11:52:40,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:40,184 INFO L93 Difference]: Finished difference Result 190 states and 265 transitions. [2022-04-06 11:52:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-04-06 11:52:40,185 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 47 [2022-04-06 11:52:40,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:40,187 INFO L225 Difference]: With dead ends: 190 [2022-04-06 11:52:40,187 INFO L226 Difference]: Without dead ends: 188 [2022-04-06 11:52:40,187 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2022-04-06 11:52:40,188 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 130 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:40,188 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 228 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-06 11:52:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-04-06 11:52:40,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 179. [2022-04-06 11:52:40,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 113 states have (on average 1.2566371681415929) internal successors, (142), 118 states have internal predecessors, (142), 56 states have call successors, (56), 10 states have call predecessors, (56), 9 states have return successors, (54), 50 states have call predecessors, (54), 54 states have call successors, (54) [2022-04-06 11:52:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 252 transitions. [2022-04-06 11:52:40,209 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 252 transitions. Word has length 47 [2022-04-06 11:52:40,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:40,209 INFO L478 AbstractCegarLoop]: Abstraction has 179 states and 252 transitions. [2022-04-06 11:52:40,209 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-04-06 11:52:40,209 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 252 transitions. [2022-04-06 11:52:40,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-04-06 11:52:40,210 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:40,210 INFO L499 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] [2022-04-06 11:52:40,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:40,423 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:40,423 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:40,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1679656732, now seen corresponding path program 2 times [2022-04-06 11:52:40,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:40,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502519973] [2022-04-06 11:52:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:40,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:40,441 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:40,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449125253] [2022-04-06 11:52:40,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 11:52:40,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:40,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:40,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:40,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-06 11:52:40,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 11:52:40,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 11:52:40,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-06 11:52:40,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:40,551 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-04-06 11:52:40,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 11:52:40,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:40,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502519973] [2022-04-06 11:52:40,551 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:40,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449125253] [2022-04-06 11:52:40,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449125253] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:52:40,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:52:40,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 11:52:40,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297497722] [2022-04-06 11:52:40,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:52:40,552 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 11:52:40,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:40,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 11:52:40,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 11:52:40,553 INFO L87 Difference]: Start difference. First operand 179 states and 252 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) [2022-04-06 11:52:40,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:40,631 INFO L93 Difference]: Finished difference Result 225 states and 312 transitions. [2022-04-06 11:52:40,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-06 11:52:40,631 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 [2022-04-06 11:52:40,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:40,632 INFO L225 Difference]: With dead ends: 225 [2022-04-06 11:52:40,632 INFO L226 Difference]: Without dead ends: 144 [2022-04-06 11:52:40,633 INFO L912 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 [2022-04-06 11:52:40,633 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:40,634 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 155 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 11:52:40,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-04-06 11:52:40,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 121. [2022-04-06 11:52:40,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.178082191780822) internal successors, (86), 77 states have internal predecessors, (86), 38 states have call successors, (38), 10 states have call predecessors, (38), 9 states have return successors, (36), 33 states have call predecessors, (36), 36 states have call successors, (36) [2022-04-06 11:52:40,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 160 transitions. [2022-04-06 11:52:40,647 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 160 transitions. Word has length 47 [2022-04-06 11:52:40,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:40,647 INFO L478 AbstractCegarLoop]: Abstraction has 121 states and 160 transitions. [2022-04-06 11:52:40,647 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) [2022-04-06 11:52:40,647 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 160 transitions. [2022-04-06 11:52:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-04-06 11:52:40,648 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:40,648 INFO L499 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] [2022-04-06 11:52:40,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-04-06 11:52:40,863 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 [2022-04-06 11:52:40,864 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:40,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:40,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1660248707, now seen corresponding path program 1 times [2022-04-06 11:52:40,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:40,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714418584] [2022-04-06 11:52:40,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:40,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:40,871 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:40,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [19055149] [2022-04-06 11:52:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:40,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:40,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:40,874 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:40,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-06 11:52:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:40,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-06 11:52:40,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-04-06 11:52:41,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-06 11:52:41,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:41,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714418584] [2022-04-06 11:52:41,001 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:41,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19055149] [2022-04-06 11:52:41,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19055149] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 11:52:41,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 11:52:41,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-06 11:52:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935678886] [2022-04-06 11:52:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:52:41,002 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-06 11:52:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-06 11:52:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-06 11:52:41,002 INFO L87 Difference]: Start difference. First operand 121 states and 160 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) [2022-04-06 11:52:41,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:41,046 INFO L93 Difference]: Finished difference Result 167 states and 233 transitions. [2022-04-06 11:52:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 11:52:41,046 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 [2022-04-06 11:52:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:41,047 INFO L225 Difference]: With dead ends: 167 [2022-04-06 11:52:41,047 INFO L226 Difference]: Without dead ends: 165 [2022-04-06 11:52:41,047 INFO L912 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 [2022-04-06 11:52:41,048 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:41,048 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 156 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:52:41,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-04-06 11:52:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2022-04-06 11:52:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 80 states have (on average 1.1625) internal successors, (93), 88 states have internal predecessors, (93), 57 states have call successors, (57), 11 states have call predecessors, (57), 10 states have return successors, (55), 48 states have call predecessors, (55), 55 states have call successors, (55) [2022-04-06 11:52:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 205 transitions. [2022-04-06 11:52:41,068 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 205 transitions. Word has length 52 [2022-04-06 11:52:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:41,068 INFO L478 AbstractCegarLoop]: Abstraction has 148 states and 205 transitions. [2022-04-06 11:52:41,068 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) [2022-04-06 11:52:41,068 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 205 transitions. [2022-04-06 11:52:41,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-04-06 11:52:41,069 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:41,069 INFO L499 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] [2022-04-06 11:52:41,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:41,276 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 [2022-04-06 11:52:41,277 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1094467600, now seen corresponding path program 1 times [2022-04-06 11:52:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:41,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235866322] [2022-04-06 11:52:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:41,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:41,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:41,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878810491] [2022-04-06 11:52:41,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:41,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:41,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:41,286 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:41,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-06 11:52:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:41,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 45 conjunts are in the unsatisfiable core [2022-04-06 11:52:41,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 11:52:41,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:52:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-04-06 11:52:41,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:41,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235866322] [2022-04-06 11:52:41,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:41,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878810491] [2022-04-06 11:52:41,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878810491] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:52:41,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:52:41,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-04-06 11:52:41,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467677158] [2022-04-06 11:52:41,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:52:41,985 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 11:52:41,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:41,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 11:52:41,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-04-06 11:52:41,985 INFO L87 Difference]: Start difference. First operand 148 states and 205 transitions. Second operand has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 11:52:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:45,259 INFO L93 Difference]: Finished difference Result 331 states and 487 transitions. [2022-04-06 11:52:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-04-06 11:52:45,260 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 64 [2022-04-06 11:52:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:45,266 INFO L225 Difference]: With dead ends: 331 [2022-04-06 11:52:45,266 INFO L226 Difference]: Without dead ends: 326 [2022-04-06 11:52:45,267 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=275, Invalid=1057, Unknown=0, NotChecked=0, Total=1332 [2022-04-06 11:52:45,268 INFO L913 BasicCegarLoop]: 79 mSDtfsCounter, 143 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:45,268 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 420 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-04-06 11:52:45,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-04-06 11:52:45,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 250. [2022-04-06 11:52:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 153 states have internal predecessors, (175), 89 states have call successors, (89), 15 states have call predecessors, (89), 14 states have return successors, (87), 81 states have call predecessors, (87), 87 states have call successors, (87) [2022-04-06 11:52:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 351 transitions. [2022-04-06 11:52:45,336 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 351 transitions. Word has length 64 [2022-04-06 11:52:45,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:45,337 INFO L478 AbstractCegarLoop]: Abstraction has 250 states and 351 transitions. [2022-04-06 11:52:45,337 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-04-06 11:52:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 351 transitions. [2022-04-06 11:52:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-04-06 11:52:45,356 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:45,356 INFO L499 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] [2022-04-06 11:52:45,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:45,575 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 [2022-04-06 11:52:45,575 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash 696944608, now seen corresponding path program 1 times [2022-04-06 11:52:45,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:45,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077726465] [2022-04-06 11:52:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:45,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:45,583 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071970998] [2022-04-06 11:52:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:45,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:45,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:45,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:45,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-06 11:52:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:45,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjunts are in the unsatisfiable core [2022-04-06 11:52:45,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-04-06 11:52:45,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:52:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-04-06 11:52:46,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:46,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077726465] [2022-04-06 11:52:46,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:46,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071970998] [2022-04-06 11:52:46,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071970998] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-06 11:52:46,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-06 11:52:46,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 14 [2022-04-06 11:52:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460883635] [2022-04-06 11:52:46,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 11:52:46,100 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-06 11:52:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-06 11:52:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-04-06 11:52:46,101 INFO L87 Difference]: Start difference. First operand 250 states and 351 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) [2022-04-06 11:52:46,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:46,192 INFO L93 Difference]: Finished difference Result 256 states and 356 transitions. [2022-04-06 11:52:46,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 11:52:46,192 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 [2022-04-06 11:52:46,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:46,194 INFO L225 Difference]: With dead ends: 256 [2022-04-06 11:52:46,194 INFO L226 Difference]: Without dead ends: 254 [2022-04-06 11:52:46,195 INFO L912 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 [2022-04-06 11:52:46,195 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 13 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:46,195 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 139 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 11:52:46,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-04-06 11:52:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-04-06 11:52:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 149 states have (on average 1.1946308724832215) internal successors, (178), 156 states have internal predecessors, (178), 89 states have call successors, (89), 16 states have call predecessors, (89), 15 states have return successors, (87), 81 states have call predecessors, (87), 87 states have call successors, (87) [2022-04-06 11:52:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 354 transitions. [2022-04-06 11:52:46,256 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 354 transitions. Word has length 74 [2022-04-06 11:52:46,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:46,256 INFO L478 AbstractCegarLoop]: Abstraction has 254 states and 354 transitions. [2022-04-06 11:52:46,256 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) [2022-04-06 11:52:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 354 transitions. [2022-04-06 11:52:46,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-04-06 11:52:46,257 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:46,257 INFO L499 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] [2022-04-06 11:52:46,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:46,479 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 [2022-04-06 11:52:46,479 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:46,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:46,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2010106522, now seen corresponding path program 1 times [2022-04-06 11:52:46,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:46,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408748903] [2022-04-06 11:52:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:46,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:46,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:46,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451917833] [2022-04-06 11:52:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:46,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:46,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:46,494 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:46,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-06 11:52:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:46,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 11:52:46,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-04-06 11:52:46,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:52:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-04-06 11:52:46,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:46,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408748903] [2022-04-06 11:52:46,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:46,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451917833] [2022-04-06 11:52:46,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451917833] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:52:46,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:52:46,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-04-06 11:52:46,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637913986] [2022-04-06 11:52:46,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:52:46,894 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-06 11:52:46,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:46,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-06 11:52:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-04-06 11:52:46,894 INFO L87 Difference]: Start difference. First operand 254 states and 354 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-04-06 11:52:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:52:47,240 INFO L93 Difference]: Finished difference Result 363 states and 502 transitions. [2022-04-06 11:52:47,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-06 11:52:47,241 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 72 [2022-04-06 11:52:47,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:52:47,242 INFO L225 Difference]: With dead ends: 363 [2022-04-06 11:52:47,243 INFO L226 Difference]: Without dead ends: 244 [2022-04-06 11:52:47,244 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-04-06 11:52:47,245 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 77 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 11:52:47,245 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 265 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 11:52:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-04-06 11:52:47,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 229. [2022-04-06 11:52:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 128 states have (on average 1.171875) internal successors, (150), 134 states have internal predecessors, (150), 85 states have call successors, (85), 16 states have call predecessors, (85), 15 states have return successors, (83), 78 states have call predecessors, (83), 83 states have call successors, (83) [2022-04-06 11:52:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 318 transitions. [2022-04-06 11:52:47,295 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 318 transitions. Word has length 72 [2022-04-06 11:52:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:52:47,295 INFO L478 AbstractCegarLoop]: Abstraction has 229 states and 318 transitions. [2022-04-06 11:52:47,296 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 6 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-04-06 11:52:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 318 transitions. [2022-04-06 11:52:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-04-06 11:52:47,297 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:52:47,297 INFO L499 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] [2022-04-06 11:52:47,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-06 11:52:47,510 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 [2022-04-06 11:52:47,510 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:52:47,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:52:47,510 INFO L85 PathProgramCache]: Analyzing trace with hash -983010836, now seen corresponding path program 1 times [2022-04-06 11:52:47,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:52:47,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370090959] [2022-04-06 11:52:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:47,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:52:47,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:52:47,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795011471] [2022-04-06 11:52:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:52:47,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:52:47,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:52:47,521 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-06 11:52:47,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-06 11:52:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:52:47,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 75 conjunts are in the unsatisfiable core [2022-04-06 11:52:47,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:52:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 44 proven. 27 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-04-06 11:52:48,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:52:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 44 proven. 27 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-04-06 11:52:49,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:52:49,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370090959] [2022-04-06 11:52:49,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:52:49,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795011471] [2022-04-06 11:52:49,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795011471] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:52:49,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:52:49,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 28 [2022-04-06 11:52:49,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644370905] [2022-04-06 11:52:49,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:52:49,273 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-04-06 11:52:49,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:52:49,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-04-06 11:52:49,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-04-06 11:52:49,274 INFO L87 Difference]: Start difference. First operand 229 states and 318 transitions. Second operand has 28 states, 25 states have (on average 2.32) internal successors, (58), 26 states have internal predecessors, (58), 10 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-04-06 11:52:56,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 11:53:07,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 11:53:24,974 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-04-06 11:53:25,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:53:25,527 INFO L93 Difference]: Finished difference Result 426 states and 621 transitions. [2022-04-06 11:53:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-04-06 11:53:25,528 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.32) internal successors, (58), 26 states have internal predecessors, (58), 10 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) Word has length 91 [2022-04-06 11:53:25,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:53:25,530 INFO L225 Difference]: With dead ends: 426 [2022-04-06 11:53:25,530 INFO L226 Difference]: Without dead ends: 421 [2022-04-06 11:53:25,532 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1190, Invalid=4662, Unknown=0, NotChecked=0, Total=5852 [2022-04-06 11:53:25,532 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 214 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 590 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.2s IncrementalHoareTripleChecker+Time [2022-04-06 11:53:25,532 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 486 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 1931 Invalid, 3 Unknown, 0 Unchecked, 23.2s Time] [2022-04-06 11:53:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-04-06 11:53:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 351. [2022-04-06 11:53:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 191 states have (on average 1.1727748691099475) internal successors, (224), 200 states have internal predecessors, (224), 139 states have call successors, (139), 21 states have call predecessors, (139), 20 states have return successors, (137), 129 states have call predecessors, (137), 137 states have call successors, (137) [2022-04-06 11:53:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 500 transitions. [2022-04-06 11:53:25,669 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 500 transitions. Word has length 91 [2022-04-06 11:53:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:53:25,669 INFO L478 AbstractCegarLoop]: Abstraction has 351 states and 500 transitions. [2022-04-06 11:53:25,669 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.32) internal successors, (58), 26 states have internal predecessors, (58), 10 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2022-04-06 11:53:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 500 transitions. [2022-04-06 11:53:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-04-06 11:53:25,670 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:53:25,670 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:53:25,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-06 11:53:25,895 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 [2022-04-06 11:53:25,896 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:53:25,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:53:25,896 INFO L85 PathProgramCache]: Analyzing trace with hash 736682115, now seen corresponding path program 1 times [2022-04-06 11:53:25,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:53:25,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747497480] [2022-04-06 11:53:25,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:25,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:53:25,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:53:25,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826781436] [2022-04-06 11:53:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:25,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:53:25,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:53:25,906 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) [2022-04-06 11:53:25,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-06 11:53:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:53:25,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-06 11:53:25,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:53:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-04-06 11:53:26,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:53:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-04-06 11:53:26,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:53:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747497480] [2022-04-06 11:53:26,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:53:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826781436] [2022-04-06 11:53:26,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826781436] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:53:26,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:53:26,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-04-06 11:53:26,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203420105] [2022-04-06 11:53:26,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:53:26,439 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 11:53:26,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:53:26,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 11:53:26,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-04-06 11:53:26,439 INFO L87 Difference]: Start difference. First operand 351 states and 500 transitions. Second operand has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-04-06 11:53:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:53:26,959 INFO L93 Difference]: Finished difference Result 570 states and 802 transitions. [2022-04-06 11:53:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-04-06 11:53:26,959 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 94 [2022-04-06 11:53:26,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:53:26,961 INFO L225 Difference]: With dead ends: 570 [2022-04-06 11:53:26,961 INFO L226 Difference]: Without dead ends: 350 [2022-04-06 11:53:26,963 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=787, Unknown=0, NotChecked=0, Total=992 [2022-04-06 11:53:26,964 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 79 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 11:53:26,964 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 337 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 11:53:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-04-06 11:53:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 341. [2022-04-06 11:53:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 197 states have (on average 1.1776649746192893) internal successors, (232), 198 states have internal predecessors, (232), 123 states have call successors, (123), 21 states have call predecessors, (123), 20 states have return successors, (121), 121 states have call predecessors, (121), 121 states have call successors, (121) [2022-04-06 11:53:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 476 transitions. [2022-04-06 11:53:27,075 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 476 transitions. Word has length 94 [2022-04-06 11:53:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:53:27,075 INFO L478 AbstractCegarLoop]: Abstraction has 341 states and 476 transitions. [2022-04-06 11:53:27,076 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-04-06 11:53:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 476 transitions. [2022-04-06 11:53:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-04-06 11:53:27,076 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:53:27,076 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:53:27,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-04-06 11:53:27,294 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 [2022-04-06 11:53:27,294 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:53:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:53:27,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1867259133, now seen corresponding path program 1 times [2022-04-06 11:53:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:53:27,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796220218] [2022-04-06 11:53:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:27,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:53:27,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:53:27,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413818084] [2022-04-06 11:53:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:27,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:53:27,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:53:27,302 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) [2022-04-06 11:53:27,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-06 11:53:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:53:27,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 11:53:27,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:53:27,622 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 58 proven. 19 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-04-06 11:53:27,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:53:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-04-06 11:53:28,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:53:28,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796220218] [2022-04-06 11:53:28,043 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:53:28,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413818084] [2022-04-06 11:53:28,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413818084] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:53:28,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:53:28,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-04-06 11:53:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878857969] [2022-04-06 11:53:28,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:53:28,044 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 11:53:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:53:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 11:53:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-04-06 11:53:28,045 INFO L87 Difference]: Start difference. First operand 341 states and 476 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2022-04-06 11:53:28,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:53:28,772 INFO L93 Difference]: Finished difference Result 465 states and 651 transitions. [2022-04-06 11:53:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 11:53:28,773 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) Word has length 94 [2022-04-06 11:53:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:53:28,774 INFO L225 Difference]: With dead ends: 465 [2022-04-06 11:53:28,774 INFO L226 Difference]: Without dead ends: 297 [2022-04-06 11:53:28,775 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=882, Unknown=0, NotChecked=0, Total=1122 [2022-04-06 11:53:28,775 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 81 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 11:53:28,776 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 277 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 268 Invalid, 0 Unknown, 67 Unchecked, 0.2s Time] [2022-04-06 11:53:28,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-04-06 11:53:28,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-04-06 11:53:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 168 states have (on average 1.1666666666666667) internal successors, (196), 169 states have internal predecessors, (196), 111 states have call successors, (111), 18 states have call predecessors, (111), 17 states have return successors, (109), 109 states have call predecessors, (109), 109 states have call successors, (109) [2022-04-06 11:53:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 416 transitions. [2022-04-06 11:53:28,880 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 416 transitions. Word has length 94 [2022-04-06 11:53:28,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:53:28,880 INFO L478 AbstractCegarLoop]: Abstraction has 297 states and 416 transitions. [2022-04-06 11:53:28,880 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 8 states have call predecessors, (27), 8 states have call successors, (27) [2022-04-06 11:53:28,880 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 416 transitions. [2022-04-06 11:53:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-04-06 11:53:28,882 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:53:28,882 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 4, 4, 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] [2022-04-06 11:53:28,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-06 11:53:29,098 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 [2022-04-06 11:53:29,099 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:53:29,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:53:29,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2002100640, now seen corresponding path program 2 times [2022-04-06 11:53:29,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:53:29,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499425269] [2022-04-06 11:53:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:29,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:53:29,110 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:53:29,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611497981] [2022-04-06 11:53:29,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-06 11:53:29,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:53:29,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:53:29,111 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) [2022-04-06 11:53:29,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-06 11:53:29,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-06 11:53:29,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 11:53:29,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 11:53:29,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:53:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 46 proven. 30 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-04-06 11:53:29,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:53:30,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:53:30,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499425269] [2022-04-06 11:53:30,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:53:30,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611497981] [2022-04-06 11:53:30,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611497981] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 11:53:30,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 11:53:30,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-04-06 11:53:30,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536600666] [2022-04-06 11:53:30,829 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 11:53:30,829 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-06 11:53:30,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:53:30,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-06 11:53:30,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-04-06 11:53:30,830 INFO L87 Difference]: Start difference. First operand 297 states and 416 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 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) [2022-04-06 11:53:31,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:53:31,569 INFO L93 Difference]: Finished difference Result 458 states and 657 transitions. [2022-04-06 11:53:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-04-06 11:53:31,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 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 [2022-04-06 11:53:31,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:53:31,572 INFO L225 Difference]: With dead ends: 458 [2022-04-06 11:53:31,572 INFO L226 Difference]: Without dead ends: 377 [2022-04-06 11:53:31,573 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 183 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2022-04-06 11:53:31,573 INFO L913 BasicCegarLoop]: 74 mSDtfsCounter, 53 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-04-06 11:53:31,573 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 334 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-04-06 11:53:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-04-06 11:53:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 321. [2022-04-06 11:53:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 184 states have (on average 1.1630434782608696) internal successors, (214), 185 states have internal predecessors, (214), 119 states have call successors, (119), 18 states have call predecessors, (119), 17 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-04-06 11:53:31,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 450 transitions. [2022-04-06 11:53:31,692 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 450 transitions. Word has length 116 [2022-04-06 11:53:31,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:53:31,692 INFO L478 AbstractCegarLoop]: Abstraction has 321 states and 450 transitions. [2022-04-06 11:53:31,692 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 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) [2022-04-06 11:53:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 450 transitions. [2022-04-06 11:53:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-04-06 11:53:31,694 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:53:31,694 INFO L499 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:53:31,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-06 11:53:31,907 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 [2022-04-06 11:53:31,907 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:53:31,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:53:31,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1586140833, now seen corresponding path program 3 times [2022-04-06 11:53:31,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:53:31,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261024974] [2022-04-06 11:53:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:53:31,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:53:31,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819112975] [2022-04-06 11:53:31,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-06 11:53:31,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:53:31,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:53:31,921 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) [2022-04-06 11:53:31,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-06 11:53:31,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-04-06 11:53:31,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 11:53:31,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 34 conjunts are in the unsatisfiable core [2022-04-06 11:53:31,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:53:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 72 proven. 36 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-04-06 11:53:33,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:53:34,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:53:34,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261024974] [2022-04-06 11:53:34,211 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:53:34,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819112975] [2022-04-06 11:53:34,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819112975] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 11:53:34,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 11:53:34,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-04-06 11:53:34,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930210702] [2022-04-06 11:53:34,212 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 11:53:34,212 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-06 11:53:34,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:53:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-06 11:53:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-04-06 11:53:34,213 INFO L87 Difference]: Start difference. First operand 321 states and 450 transitions. Second operand has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-04-06 11:53:35,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:53:35,983 INFO L93 Difference]: Finished difference Result 406 states and 567 transitions. [2022-04-06 11:53:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-04-06 11:53:35,984 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 121 [2022-04-06 11:53:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:53:35,985 INFO L225 Difference]: With dead ends: 406 [2022-04-06 11:53:35,985 INFO L226 Difference]: Without dead ends: 404 [2022-04-06 11:53:35,986 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=215, Invalid=1191, Unknown=0, NotChecked=0, Total=1406 [2022-04-06 11:53:35,986 INFO L913 BasicCegarLoop]: 49 mSDtfsCounter, 96 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-04-06 11:53:35,986 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 314 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-04-06 11:53:35,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-04-06 11:53:36,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 333. [2022-04-06 11:53:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 193 states have (on average 1.1554404145077721) internal successors, (223), 194 states have internal predecessors, (223), 119 states have call successors, (119), 21 states have call predecessors, (119), 20 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-04-06 11:53:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 459 transitions. [2022-04-06 11:53:36,113 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 459 transitions. Word has length 121 [2022-04-06 11:53:36,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:53:36,113 INFO L478 AbstractCegarLoop]: Abstraction has 333 states and 459 transitions. [2022-04-06 11:53:36,114 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 5 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-04-06 11:53:36,114 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 459 transitions. [2022-04-06 11:53:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-04-06 11:53:36,114 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:53:36,115 INFO L499 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] [2022-04-06 11:53:36,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-06 11:53:36,327 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 [2022-04-06 11:53:36,328 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:53:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:53:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1478543105, now seen corresponding path program 4 times [2022-04-06 11:53:36,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:53:36,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406850702] [2022-04-06 11:53:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:36,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:53:36,334 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:53:36,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163450643] [2022-04-06 11:53:36,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-06 11:53:36,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:53:36,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:53:36,337 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) [2022-04-06 11:53:36,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-06 11:53:36,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-06 11:53:36,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 11:53:36,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 13 conjunts are in the unsatisfiable core [2022-04-06 11:53:36,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:53:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 183 proven. 18 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-04-06 11:53:36,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:53:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 61 proven. 20 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2022-04-06 11:53:36,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:53:36,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406850702] [2022-04-06 11:53:36,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:53:36,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163450643] [2022-04-06 11:53:36,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163450643] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:53:36,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:53:36,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-04-06 11:53:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140873190] [2022-04-06 11:53:36,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:53:36,951 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-04-06 11:53:36,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:53:36,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-04-06 11:53:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-04-06 11:53:36,952 INFO L87 Difference]: Start difference. First operand 333 states and 459 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 17 states have internal predecessors, (57), 8 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-04-06 11:53:37,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:53:37,447 INFO L93 Difference]: Finished difference Result 427 states and 571 transitions. [2022-04-06 11:53:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-06 11:53:37,448 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 17 states have internal predecessors, (57), 8 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 119 [2022-04-06 11:53:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:53:37,449 INFO L225 Difference]: With dead ends: 427 [2022-04-06 11:53:37,449 INFO L226 Difference]: Without dead ends: 223 [2022-04-06 11:53:37,450 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2022-04-06 11:53:37,450 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 44 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 11:53:37,450 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 394 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 11:53:37,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-04-06 11:53:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 220. [2022-04-06 11:53:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 134 states have (on average 1.044776119402985) internal successors, (140), 135 states have internal predecessors, (140), 67 states have call successors, (67), 19 states have call predecessors, (67), 18 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2022-04-06 11:53:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 272 transitions. [2022-04-06 11:53:37,519 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 272 transitions. Word has length 119 [2022-04-06 11:53:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:53:37,520 INFO L478 AbstractCegarLoop]: Abstraction has 220 states and 272 transitions. [2022-04-06 11:53:37,520 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 17 states have internal predecessors, (57), 8 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2022-04-06 11:53:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 272 transitions. [2022-04-06 11:53:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-04-06 11:53:37,520 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:53:37,521 INFO L499 BasicCegarLoop]: trace histogram [18, 17, 17, 5, 5, 5, 5, 4, 4, 4, 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] [2022-04-06 11:53:37,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-04-06 11:53:37,731 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 [2022-04-06 11:53:37,731 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:53:37,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:53:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1915703805, now seen corresponding path program 5 times [2022-04-06 11:53:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:53:37,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179008911] [2022-04-06 11:53:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:37,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:53:37,740 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:53:37,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805567568] [2022-04-06 11:53:37,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-06 11:53:37,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:53:37,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:53:37,741 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) [2022-04-06 11:53:37,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-04-06 11:53:37,808 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-04-06 11:53:37,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 11:53:37,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-06 11:53:37,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:53:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 114 proven. 47 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2022-04-06 11:53:38,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:53:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 52 proven. 47 refuted. 0 times theorem prover too weak. 559 trivial. 0 not checked. [2022-04-06 11:53:38,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:53:38,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179008911] [2022-04-06 11:53:38,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:53:38,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805567568] [2022-04-06 11:53:38,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805567568] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:53:38,915 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:53:38,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 23 [2022-04-06 11:53:38,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396301730] [2022-04-06 11:53:38,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:53:38,916 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-06 11:53:38,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:53:38,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-06 11:53:38,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2022-04-06 11:53:38,917 INFO L87 Difference]: Start difference. First operand 220 states and 272 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 states have internal predecessors, (62), 12 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2022-04-06 11:53:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:53:40,237 INFO L93 Difference]: Finished difference Result 287 states and 353 transitions. [2022-04-06 11:53:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-04-06 11:53:40,238 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 states have internal predecessors, (62), 12 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) Word has length 138 [2022-04-06 11:53:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:53:40,238 INFO L225 Difference]: With dead ends: 287 [2022-04-06 11:53:40,238 INFO L226 Difference]: Without dead ends: 156 [2022-04-06 11:53:40,239 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2022-04-06 11:53:40,240 INFO L913 BasicCegarLoop]: 63 mSDtfsCounter, 82 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-04-06 11:53:40,240 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 395 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-04-06 11:53:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-04-06 11:53:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-04-06 11:53:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 99 states have (on average 1.0404040404040404) internal successors, (103), 100 states have internal predecessors, (103), 43 states have call successors, (43), 14 states have call predecessors, (43), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-04-06 11:53:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 187 transitions. [2022-04-06 11:53:40,286 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 187 transitions. Word has length 138 [2022-04-06 11:53:40,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:53:40,287 INFO L478 AbstractCegarLoop]: Abstraction has 156 states and 187 transitions. [2022-04-06 11:53:40,287 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 23 states have internal predecessors, (62), 12 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2022-04-06 11:53:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 187 transitions. [2022-04-06 11:53:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-04-06 11:53:40,287 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:53:40,288 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:53:40,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-04-06 11:53:40,492 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 [2022-04-06 11:53:40,492 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:53:40,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:53:40,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2145578717, now seen corresponding path program 6 times [2022-04-06 11:53:40,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:53:40,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717622743] [2022-04-06 11:53:40,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:40,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:53:40,506 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:53:40,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659590997] [2022-04-06 11:53:40,506 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-04-06 11:53:40,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:53:40,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:53:40,507 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) [2022-04-06 11:53:40,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-04-06 11:53:40,548 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-04-06 11:53:40,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-06 11:53:40,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-06 11:53:40,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:53:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 110 proven. 23 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-04-06 11:53:40,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:53:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 110 proven. 23 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2022-04-06 11:53:40,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:53:40,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717622743] [2022-04-06 11:53:40,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:53:40,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659590997] [2022-04-06 11:53:40,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659590997] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-06 11:53:40,948 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-06 11:53:40,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-06 11:53:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654217090] [2022-04-06 11:53:40,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-06 11:53:40,949 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 11:53:40,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:53:40,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 11:53:40,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-06 11:53:40,950 INFO L87 Difference]: Start difference. First operand 156 states and 187 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 11:53:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:53:41,123 INFO L93 Difference]: Finished difference Result 170 states and 198 transitions. [2022-04-06 11:53:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-06 11:53:41,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 146 [2022-04-06 11:53:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:53:41,124 INFO L225 Difference]: With dead ends: 170 [2022-04-06 11:53:41,124 INFO L226 Difference]: Without dead ends: 162 [2022-04-06 11:53:41,124 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-06 11:53:41,125 INFO L913 BasicCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-06 11:53:41,125 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 156 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-06 11:53:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-04-06 11:53:41,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-04-06 11:53:41,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 39 states have call successors, (39), 17 states have call predecessors, (39), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-04-06 11:53:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 184 transitions. [2022-04-06 11:53:41,167 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 184 transitions. Word has length 146 [2022-04-06 11:53:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:53:41,168 INFO L478 AbstractCegarLoop]: Abstraction has 162 states and 184 transitions. [2022-04-06 11:53:41,168 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-04-06 11:53:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 184 transitions. [2022-04-06 11:53:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-04-06 11:53:41,168 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 11:53:41,168 INFO L499 BasicCegarLoop]: trace histogram [18, 17, 17, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:53:41,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-04-06 11:53:41,375 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 [2022-04-06 11:53:41,375 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 11:53:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 11:53:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1981190090, now seen corresponding path program 7 times [2022-04-06 11:53:41,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 11:53:41,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007616606] [2022-04-06 11:53:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 11:53:41,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 11:53:41,382 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-06 11:53:41,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765347317] [2022-04-06 11:53:41,383 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-04-06 11:53:41,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-06 11:53:41,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 11:53:41,385 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) [2022-04-06 11:53:41,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-04-06 11:53:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 11:53:41,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-06 11:53:41,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-06 11:53:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 143 proven. 56 refuted. 0 times theorem prover too weak. 497 trivial. 0 not checked. [2022-04-06 11:53:41,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-06 11:53:42,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 11:53:42,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007616606] [2022-04-06 11:53:42,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-06 11:53:42,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765347317] [2022-04-06 11:53:42,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765347317] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-06 11:53:42,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-06 11:53:42,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-04-06 11:53:42,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767611123] [2022-04-06 11:53:42,963 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-06 11:53:42,964 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-04-06 11:53:42,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 11:53:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-04-06 11:53:42,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=749, Unknown=1, NotChecked=0, Total=870 [2022-04-06 11:53:42,964 INFO L87 Difference]: Start difference. First operand 162 states and 184 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 7 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-04-06 11:53:43,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 11:53:43,497 INFO L93 Difference]: Finished difference Result 174 states and 193 transitions. [2022-04-06 11:53:43,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-06 11:53:43,498 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 7 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 151 [2022-04-06 11:53:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 11:53:43,498 INFO L225 Difference]: With dead ends: 174 [2022-04-06 11:53:43,498 INFO L226 Difference]: Without dead ends: 0 [2022-04-06 11:53:43,499 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=319, Invalid=1402, Unknown=1, NotChecked=0, Total=1722 [2022-04-06 11:53:43,500 INFO L913 BasicCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-06 11:53:43,500 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 302 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-06 11:53:43,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-06 11:53:43,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-06 11:53:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-06 11:53:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-06 11:53:43,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2022-04-06 11:53:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 11:53:43,501 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-06 11:53:43,501 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 16 states have internal predecessors, (53), 7 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-04-06 11:53:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-06 11:53:43,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-06 11:53:43,503 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 11:53:43,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-04-06 11:53:43,711 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 [2022-04-06 11:53:43,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-06 11:53:58,950 WARN L232 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 241 DAG size of output: 80 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 11:54:05,242 WARN L232 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 243 DAG size of output: 77 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 11:54:12,991 WARN L232 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 241 DAG size of output: 77 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 11:54:19,101 WARN L232 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 245 DAG size of output: 81 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 11:54:27,320 WARN L232 SmtUtils]: Spent 8.22s on a formula simplification. DAG size of input: 245 DAG size of output: 81 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-04-06 11:54:27,324 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-06 11:54:27,324 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-06 11:54:27,324 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-06 11:54:27,324 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-06 11:54:27,324 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-06 11:54:27,324 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-06 11:54:27,324 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-06 11:54:27,324 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-04-06 11:54:27,324 INFO L882 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-04-06 11:54:27,324 INFO L882 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-04-06 11:54:27,324 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-04-06 11:54:27,324 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 76) the Hoare annotation is: true [2022-04-06 11:54:27,324 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-04-06 11:54:27,324 INFO L882 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-04-06 11:54:27,324 INFO L878 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-04-06 11:54:27,324 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)) [2022-04-06 11:54:27,325 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)) [2022-04-06 11:54:27,325 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-04-06 11:54:27,325 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse13 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse3 (<= main_~c~0 2)) (.cse5 (< main_~b~0 (div (+ 2 (* (- 1) main_~b~0)) 2))) (.cse7 (or (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) .cse13) (not (= main_~b~0 0)))) (.cse1 (= main_~r~0 1)) (.cse2 (= main_~a~0 main_~y~0)) (.cse8 (<= 0 main_~b~0)) (.cse4 (<= main_~b~0 main_~c~0)) (.cse6 (<= main_~y~0 2)) (.cse0 (= main_~a~0 .cse13)) (.cse9 (<= 1 main_~y~0)) (.cse11 (= main_~a~0 main_~x~0)) (.cse10 (<= main_~x~0 2)) (.cse12 (= main_~p~0 1))) (or (and (= main_~s~0 0) (= main_~k~0 0) .cse0 .cse1 .cse2 (= main_~b~0 main_~x~0) .cse3 .cse4 (< main_~x~0 main_~a~0) (<= main_~a~0 2) (<= 1 main_~b~0) (= main_~q~0 1)) (and (< main_~b~0 main_~a~0) .cse5 (<= 1 main_~x~0) .cse6 .cse7 .cse0 .cse3 .cse4 .cse8 .cse9 .cse10) (and .cse5 .cse7 .cse0 .cse1 .cse2 .cse4 .cse8 .cse9 (= main_~x~0 (+ main_~b~0 main_~a~0)) (= (+ main_~s~0 1) 0) .cse10) (and (= (+ (* main_~x~0 2) main_~b~0) main_~y~0) (= (+ main_~s~0 (* main_~r~0 2)) 1) .cse6 .cse0 .cse4 (<= main_~c~0 (+ (div (+ main_~b~0 (- 4)) 2) 2)) .cse9 .cse11 (= (+ (* main_~p~0 2) main_~q~0) 0) .cse10 .cse12) (and .cse6 (= main_~s~0 1) .cse0 (<= 1 main_~a~0) (= main_~b~0 main_~y~0) (= main_~q~0 0) .cse9 .cse11 .cse10 .cse12)))) [2022-04-06 11:54:27,325 INFO L878 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (and (< main_~b~0 main_~a~0) (<= 1 main_~x~0) (<= main_~y~0 2) (= (+ (* main_~q~0 main_~x~0) main_~a~0 (* main_~y~0 main_~s~0)) .cse0) (<= main_~b~0 main_~c~0) (or (= main_~b~0 0) (= main_~a~0 .cse0)) (<= 1 main_~y~0))) [2022-04-06 11:54:27,325 INFO L882 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2022-04-06 11:54:27,325 INFO L882 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2022-04-06 11:54:27,325 INFO L878 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse1 (* main_~y~0 main_~r~0)) (.cse2 (* main_~p~0 main_~x~0))) (let ((.cse10 (<= 0 main_~c~0)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse3 (* main_~q~0 main_~x~0)) (.cse4 (* main_~y~0 main_~s~0)) (.cse18 (= main_~r~0 1)) (.cse8 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse19 (= main_~a~0 main_~y~0)) (.cse20 (= main_~q~0 1)) (.cse21 (<= 1 main_~x~0)) (.cse5 (<= main_~y~0 2)) (.cse17 (= main_~k~0 0)) (.cse6 (= main_~s~0 1)) (.cse7 (= main_~a~0 (+ .cse1 .cse2))) (.cse9 (<= 1 main_~a~0)) (.cse11 (= main_~b~0 main_~y~0)) (.cse12 (= main_~q~0 0)) (.cse13 (<= 1 main_~y~0)) (.cse14 (= main_~a~0 main_~x~0)) (.cse15 (<= main_~x~0 2)) (.cse16 (= main_~p~0 1))) (or (and .cse0 (= (+ .cse1 main_~b~0 .cse2) (+ .cse3 (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0) .cse4)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= main_~b~0 (div (+ (* (- 1) main_~c~0) 2) 2)) .cse13 .cse14 .cse15 .cse16) (and .cse0 (= main_~x~0 (+ main_~c~0 main_~b~0)) .cse5 .cse6 .cse7 .cse9 .cse10 .cse11 (= main_~k~0 1) (not (<= main_~b~0 main_~c~0)) .cse12 .cse13 .cse14 .cse15 .cse16) (and (= main_~s~0 0) .cse17 .cse7 .cse18 .cse19 (< main_~b~0 main_~c~0) (= main_~b~0 main_~x~0) (<= main_~c~0 2) (< main_~x~0 main_~a~0) (<= main_~a~0 2) (<= 1 main_~b~0) .cse20) (and (< main_~b~0 main_~a~0) .cse0 (= main_~b~0 (+ .cse3 .cse4)) .cse21 .cse5 (= (+ main_~c~0 (* main_~b~0 2)) main_~y~0) .cse7 .cse18 .cse8 .cse19 (= main_~k~0 2) .cse20 .cse13 (< (* main_~c~0 2) main_~a~0) .cse15) (and (= main_~c~0 main_~a~0) (= (+ (* main_~x~0 2) main_~b~0) main_~y~0) .cse21 (= (+ main_~s~0 (* main_~r~0 2)) 1) .cse5 .cse17 .cse7 .cse13 .cse14 (= (+ (* main_~p~0 2) main_~q~0) 0) .cse15 .cse16) (and .cse5 .cse17 .cse6 .cse7 .cse9 .cse11 .cse12 .cse13 .cse14 (= main_~c~0 main_~x~0) .cse15 .cse16)))) [2022-04-06 11:54:27,325 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 18 76) no Hoare annotation was computed. [2022-04-06 11:54:27,325 INFO L882 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2022-04-06 11:54:27,325 INFO L882 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2022-04-06 11:54:27,325 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 18 76) no Hoare annotation was computed. [2022-04-06 11:54:27,325 INFO L878 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse7 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse15 (= main_~a~0 main_~x~0)) (.cse16 (= main_~p~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~c~0 main_~a~0)) (.cse2 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse3 (<= 1 main_~x~0)) (.cse4 (<= main_~y~0 2)) (.cse5 (= main_~k~0 0)) (.cse6 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse11 (= main_~r~0 1)) (.cse12 (= main_~a~0 main_~y~0)) (.cse8 (< main_~b~0 main_~c~0)) (.cse14 (= main_~d~0 1)) (.cse13 (= main_~q~0 1)) (.cse9 (<= 1 main_~y~0)) (.cse10 (<= main_~x~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= main_~a~0 2) .cse9 (<= main_~b~0 (div (div main_~c~0 2) 2)) .cse10) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse7 .cse12 .cse8 (= main_~d~0 2) (<= main_~b~0 (div main_~v~0 2)) .cse13 .cse9 .cse10) (and .cse0 .cse1 (= (+ (* main_~x~0 2) main_~b~0) main_~y~0) (= (+ main_~s~0 (* main_~r~0 2)) 1) .cse4 .cse5 .cse6 .cse14 .cse9 .cse15 (= (+ (* main_~p~0 2) main_~q~0) 0) (< main_~v~0 main_~c~0) .cse10 .cse16) (and .cse0 (or (<= (+ main_~b~0 main_~v~0) main_~c~0) (= main_~c~0 main_~v~0)) .cse5 (= main_~s~0 1) .cse6 (= main_~b~0 main_~y~0) (<= main_~b~0 main_~c~0) (= main_~q~0 0) .cse9 .cse15 (= main_~c~0 main_~x~0) .cse10 .cse16) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse12 .cse8 .cse14 (<= 0 main_~b~0) .cse13 .cse9 .cse10))) [2022-04-06 11:54:27,326 INFO L882 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2022-04-06 11:54:27,326 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse7 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse15 (= main_~a~0 main_~x~0)) (.cse16 (= main_~p~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~c~0 main_~a~0)) (.cse2 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse3 (<= 1 main_~x~0)) (.cse4 (<= main_~y~0 2)) (.cse5 (= main_~k~0 0)) (.cse6 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse11 (= main_~r~0 1)) (.cse12 (= main_~a~0 main_~y~0)) (.cse8 (< main_~b~0 main_~c~0)) (.cse14 (= main_~d~0 1)) (.cse13 (= main_~q~0 1)) (.cse9 (<= 1 main_~y~0)) (.cse10 (<= main_~x~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= main_~a~0 2) .cse9 (<= main_~b~0 (div (div main_~c~0 2) 2)) .cse10) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse7 .cse12 .cse8 (= main_~d~0 2) (<= main_~b~0 (div main_~v~0 2)) .cse13 .cse9 .cse10) (and .cse0 .cse1 (= (+ (* main_~x~0 2) main_~b~0) main_~y~0) (= (+ main_~s~0 (* main_~r~0 2)) 1) .cse4 .cse5 .cse6 .cse14 .cse9 .cse15 (= (+ (* main_~p~0 2) main_~q~0) 0) (< main_~v~0 main_~c~0) .cse10 .cse16) (and .cse0 (or (<= (+ main_~b~0 main_~v~0) main_~c~0) (= main_~c~0 main_~v~0)) .cse5 (= main_~s~0 1) .cse6 (= main_~b~0 main_~y~0) (<= main_~b~0 main_~c~0) (= main_~q~0 0) .cse9 .cse15 (= main_~c~0 main_~x~0) .cse10 .cse16) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse12 .cse8 .cse14 (<= 0 main_~b~0) .cse13 .cse9 .cse10))) [2022-04-06 11:54:27,326 INFO L878 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse7 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse15 (= main_~a~0 main_~x~0)) (.cse16 (= main_~p~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~c~0 main_~a~0)) (.cse2 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse3 (<= 1 main_~x~0)) (.cse4 (<= main_~y~0 2)) (.cse5 (= main_~k~0 0)) (.cse6 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse11 (= main_~r~0 1)) (.cse12 (= main_~a~0 main_~y~0)) (.cse8 (< main_~b~0 main_~c~0)) (.cse14 (= main_~d~0 1)) (.cse13 (= main_~q~0 1)) (.cse9 (<= 1 main_~y~0)) (.cse10 (<= main_~x~0 2))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= main_~a~0 2) .cse9 (<= main_~b~0 (div (div main_~c~0 2) 2)) .cse10) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse7 .cse12 .cse8 (= main_~d~0 2) (<= main_~b~0 (div main_~v~0 2)) .cse13 .cse9 .cse10) (and .cse0 .cse1 (= (+ (* main_~x~0 2) main_~b~0) main_~y~0) (= (+ main_~s~0 (* main_~r~0 2)) 1) .cse4 .cse5 .cse6 .cse14 .cse9 .cse15 (= (+ (* main_~p~0 2) main_~q~0) 0) (< main_~v~0 main_~c~0) .cse10 .cse16) (and .cse0 (or (<= (+ main_~b~0 main_~v~0) main_~c~0) (= main_~c~0 main_~v~0)) .cse5 (= main_~s~0 1) .cse6 (= main_~b~0 main_~y~0) (<= main_~b~0 main_~c~0) (= main_~q~0 0) .cse9 .cse15 (= main_~c~0 main_~x~0) .cse10 .cse16) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse12 .cse8 .cse14 (<= 0 main_~b~0) .cse13 .cse9 .cse10))) [2022-04-06 11:54:27,326 INFO L878 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse7 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse3 (<= 1 main_~x~0)) (.cse11 (= main_~r~0 1)) (.cse12 (= main_~a~0 main_~y~0)) (.cse8 (< main_~b~0 main_~c~0)) (.cse13 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~c~0 main_~a~0)) (.cse2 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse4 (<= main_~y~0 2)) (.cse5 (= main_~k~0 0)) (.cse6 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse16 (= main_~d~0 1)) (.cse9 (<= 1 main_~y~0)) (.cse14 (= main_~a~0 main_~x~0)) (.cse10 (<= main_~x~0 2)) (.cse15 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= main_~a~0 2) .cse9 (<= main_~b~0 (div (div main_~c~0 2) 2)) .cse10) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse7 .cse12 .cse8 (= main_~d~0 2) (<= main_~b~0 (div main_~v~0 2)) .cse13 .cse9 .cse10) (and .cse0 (or (<= (+ main_~b~0 main_~v~0) main_~c~0) (= main_~c~0 main_~v~0)) .cse5 (= main_~s~0 1) .cse6 (= main_~b~0 main_~y~0) (<= main_~b~0 main_~c~0) (= main_~q~0 0) .cse9 .cse14 (= main_~c~0 main_~x~0) .cse10 .cse15) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse12 .cse8 .cse16 (<= 0 main_~b~0) .cse13 .cse9 .cse10) (and .cse0 .cse1 .cse2 (= (+ main_~s~0 (* main_~r~0 2)) 1) .cse4 .cse5 .cse6 .cse16 .cse9 .cse14 (= (+ (* main_~p~0 2) main_~q~0) 0) (< main_~v~0 main_~c~0) .cse10 .cse15))) [2022-04-06 11:54:27,326 INFO L878 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse7 (<= (div (* (- 1) main_~v~0) (- 2)) main_~b~0)) (.cse3 (<= 1 main_~x~0)) (.cse11 (= main_~r~0 1)) (.cse12 (= main_~a~0 main_~y~0)) (.cse8 (< main_~b~0 main_~c~0)) (.cse13 (= main_~q~0 1)) (.cse0 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse1 (= main_~c~0 main_~a~0)) (.cse2 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse4 (<= main_~y~0 2)) (.cse5 (= main_~k~0 0)) (.cse6 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse16 (= main_~d~0 1)) (.cse9 (<= 1 main_~y~0)) (.cse14 (= main_~a~0 main_~x~0)) (.cse10 (<= main_~x~0 2)) (.cse15 (= main_~p~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= main_~a~0 2) .cse9 (<= main_~b~0 (div (div main_~c~0 2) 2)) .cse10) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse7 .cse12 .cse8 (= main_~d~0 2) (<= main_~b~0 (div main_~v~0 2)) .cse13 .cse9 .cse10) (and .cse0 (or (<= (+ main_~b~0 main_~v~0) main_~c~0) (= main_~c~0 main_~v~0)) .cse5 (= main_~s~0 1) .cse6 (= main_~b~0 main_~y~0) (<= main_~b~0 main_~c~0) (= main_~q~0 0) .cse9 .cse14 (= main_~c~0 main_~x~0) .cse10 .cse15) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse11 .cse12 .cse8 .cse16 (<= 0 main_~b~0) .cse13 .cse9 .cse10) (and .cse0 .cse1 .cse2 (= (+ main_~s~0 (* main_~r~0 2)) 1) .cse4 .cse5 .cse6 .cse16 .cse9 .cse14 (= (+ (* main_~p~0 2) main_~q~0) 0) (< main_~v~0 main_~c~0) .cse10 .cse15))) [2022-04-06 11:54:27,326 INFO L882 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2022-04-06 11:54:27,326 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-04-06 11:54:27,326 INFO L882 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-04-06 11:54:27,326 INFO L882 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-04-06 11:54:27,326 INFO L882 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-04-06 11:54:27,327 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-04-06 11:54:27,327 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-04-06 11:54:27,329 INFO L719 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 11:54:27,330 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 11:54:27,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 11:54:27 BasicIcfg [2022-04-06 11:54:27,353 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 11:54:27,353 INFO L158 Benchmark]: Toolchain (without parser) took 115226.15ms. Allocated memory was 189.8MB in the beginning and 343.9MB in the end (delta: 154.1MB). Free memory was 134.9MB in the beginning and 312.7MB in the end (delta: -177.8MB). Peak memory consumption was 175.3MB. Max. memory is 8.0GB. [2022-04-06 11:54:27,354 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 11:54:27,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.56ms. Allocated memory is still 189.8MB. Free memory was 134.8MB in the beginning and 165.3MB in the end (delta: -30.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-04-06 11:54:27,354 INFO L158 Benchmark]: Boogie Preprocessor took 18.77ms. Allocated memory is still 189.8MB. Free memory was 165.3MB in the beginning and 163.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 11:54:27,354 INFO L158 Benchmark]: RCFGBuilder took 190.14ms. Allocated memory is still 189.8MB. Free memory was 163.8MB in the beginning and 152.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-06 11:54:27,354 INFO L158 Benchmark]: IcfgTransformer took 24.15ms. Allocated memory is still 189.8MB. Free memory was 152.3MB in the beginning and 151.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 11:54:27,354 INFO L158 Benchmark]: TraceAbstraction took 114806.22ms. Allocated memory was 189.8MB in the beginning and 343.9MB in the end (delta: 154.1MB). Free memory was 150.6MB in the beginning and 312.7MB in the end (delta: -162.2MB). Peak memory consumption was 191.4MB. Max. memory is 8.0GB. [2022-04-06 11:54:27,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 151.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.56ms. Allocated memory is still 189.8MB. Free memory was 134.8MB in the beginning and 165.3MB in the end (delta: -30.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.77ms. Allocated memory is still 189.8MB. Free memory was 165.3MB in the beginning and 163.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 190.14ms. Allocated memory is still 189.8MB. Free memory was 163.8MB in the beginning and 152.3MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 24.15ms. Allocated memory is still 189.8MB. Free memory was 152.3MB in the beginning and 151.0MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 114806.22ms. Allocated memory was 189.8MB in the beginning and 343.9MB in the end (delta: 154.1MB). Free memory was 150.6MB in the beginning and 312.7MB in the end (delta: -162.2MB). Peak memory consumption was 191.4MB. 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 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 114.7s, OverallIterations: 22, TraceHistogramMax: 18, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 50.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 43.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 1435 SdHoareTripleChecker+Valid, 31.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1374 mSDsluCounter, 5583 SdHoareTripleChecker+Invalid, 30.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 67 IncrementalHoareTripleChecker+Unchecked, 4472 mSDsCounter, 1972 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8631 IncrementalHoareTripleChecker+Invalid, 10673 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1972 mSolverCounterUnsat, 1111 mSDtfsCounter, 8631 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3203 GetRequests, 2686 SyntacticMatches, 18 SemanticMatches, 499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3501 ImplicationChecksByTransitivity, 21.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=351occurred in iteration=14, InterpolantAutomatonStates: 324, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 404 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 412 PreInvPairs, 505 NumberOfFragments, 2240 HoareAnnotationTreeSize, 412 FomulaSimplifications, 22014 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 18 FomulaSimplificationsInter, 42108 FormulaSimplificationTreeSizeReductionInter, 42.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 1700 NumberOfCodeBlocks, 1549 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 2722 ConstructedInterpolants, 2 QuantifiedInterpolants, 12397 SizeOfPredicates, 132 NumberOfNonLiveVariables, 4079 ConjunctsInSsa, 451 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 6450/6964 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((((((((((v == d * b && c == a) && b == q * x + y * s) && 1 <= x) && y <= 2) && k == 0) && a == y * r + p * x) && -1 * v / -2 <= b) && b < c) && a <= 2) && 1 <= y) && b <= c / 2 / 2) && x <= 2) || ((((((((((((((c == a && b == q * x + y * s) && 1 <= x) && y <= 2) && k == 0) && a == y * r + p * x) && r == 1) && -1 * v / -2 <= b) && a == y) && b < c) && d == 2) && b <= v / 2) && q == 1) && 1 <= y) && x <= 2)) || (((((((((((((v == d * b && c == a) && x * 2 + b == y) && s + r * 2 == 1) && y <= 2) && k == 0) && a == y * r + p * x) && d == 1) && 1 <= y) && a == x) && p * 2 + q == 0) && v < c) && x <= 2) && p == 1)) || ((((((((((((v == d * b && (b + v <= c || c == v)) && k == 0) && s == 1) && a == y * r + p * x) && b == y) && b <= c) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1)) || ((((((((((((((v == d * b && c == a) && b == q * x + y * s) && 1 <= x) && y <= 2) && k == 0) && a == y * r + p * x) && r == 1) && a == y) && b < c) && d == 1) && 0 <= b) && q == 1) && 1 <= y) && x <= 2) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((s == 0 && k == 0) && a == y * r + p * x) && r == 1) && a == y) && b == x) && c <= 2) && b <= c) && x < a) && a <= 2) && 1 <= b) && q == 1) || ((((((((((b < a && b < (2 + -1 * b) / 2) && 1 <= x) && y <= 2) && (q * x + a + y * s == y * r + p * x || !(b == 0))) && a == y * r + p * x) && c <= 2) && b <= c) && 0 <= b) && 1 <= y) && x <= 2)) || ((((((((((b < (2 + -1 * b) / 2 && (q * x + a + y * s == y * r + p * x || !(b == 0))) && a == y * r + p * x) && r == 1) && a == y) && b <= c) && 0 <= b) && 1 <= y) && x == b + a) && s + 1 == 0) && x <= 2)) || ((((((((((x * 2 + b == y && s + r * 2 == 1) && y <= 2) && a == y * r + p * x) && b <= c) && c <= (b + -4) / 2 + 2) && 1 <= y) && a == x) && p * 2 + q == 0) && x <= 2) && p == 1)) || (((((((((y <= 2 && s == 1) && a == y * r + p * x) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((((((((((v == d * b && y * r + b + p * x == q * x + k * y * s + q * k * x + y * s) && y <= 2) && s == 1) && a == y * r + p * x) && -1 * v / -2 <= b) && 1 <= a) && 0 <= c) && b == y) && q == 0) && b <= (-1 * c + 2) / 2) && 1 <= y) && a == x) && x <= 2) && p == 1) || ((((((((((((((v == d * b && x == c + b) && y <= 2) && s == 1) && a == y * r + p * x) && 1 <= a) && 0 <= c) && b == y) && k == 1) && !(b <= c)) && q == 0) && 1 <= y) && a == x) && x <= 2) && p == 1)) || (((((((((((s == 0 && k == 0) && a == y * r + p * x) && r == 1) && a == y) && b < c) && b == x) && c <= 2) && x < a) && a <= 2) && 1 <= b) && q == 1)) || ((((((((((((((b < a && v == d * b) && b == q * x + y * s) && 1 <= x) && y <= 2) && c + b * 2 == y) && a == y * r + p * x) && r == 1) && -1 * v / -2 <= b) && a == y) && k == 2) && q == 1) && 1 <= y) && c * 2 < a) && x <= 2)) || (((((((((((c == a && x * 2 + b == y) && 1 <= x) && s + r * 2 == 1) && y <= 2) && k == 0) && a == y * r + p * x) && 1 <= y) && a == x) && p * 2 + q == 0) && x <= 2) && p == 1)) || (((((((((((y <= 2 && k == 0) && s == 1) && a == y * r + p * x) && 1 <= a) && b == y) && q == 0) && 1 <= y) && a == x) && c == x) && x <= 2) && p == 1) RESULT: Ultimate proved your program to be correct! [2022-04-06 11:54:27,434 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...