/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/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 14:18:24,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 14:18:24,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 14:18:24,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 14:18:24,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 14:18:24,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 14:18:24,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 14:18:24,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 14:18:24,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 14:18:24,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 14:18:24,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 14:18:24,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 14:18:24,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 14:18:24,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 14:18:24,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 14:18:24,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 14:18:24,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 14:18:24,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 14:18:24,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 14:18:24,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 14:18:24,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 14:18:24,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 14:18:24,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 14:18:24,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 14:18:24,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 14:18:24,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 14:18:24,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 14:18:24,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 14:18:24,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 14:18:24,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 14:18:24,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 14:18:24,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 14:18:24,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 14:18:24,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 14:18:24,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 14:18:24,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 14:18:24,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 14:18:24,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 14:18:24,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 14:18:24,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 14:18:24,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 14:18:24,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 14:18:24,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 14:18:24,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 14:18:24,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 14:18:24,593 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 14:18:24,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 14:18:24,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 14:18:24,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 14:18:24,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 14:18:24,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 14:18:24,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 14:18:24,594 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 14:18:24,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 14:18:24,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 14:18:24,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 14:18:24,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 14:18:24,594 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 14:18:24,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 14:18:24,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 14:18:24,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 14:18:24,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 14:18:24,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 14:18:24,595 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 14:18:24,596 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 14:18:24,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 14:18:24,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 14:18:24,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 14:18:24,728 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 14:18:24,729 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 14:18:24,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound10.c [2022-01-31 14:18:24,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/480a02fdf/443ec22d3fae41e1a34e11fd0df5f70c/FLAG5f78c5403 [2022-01-31 14:18:25,210 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 14:18:25,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd-ll_unwindbound10.c [2022-01-31 14:18:25,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/480a02fdf/443ec22d3fae41e1a34e11fd0df5f70c/FLAG5f78c5403 [2022-01-31 14:18:25,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/480a02fdf/443ec22d3fae41e1a34e11fd0df5f70c [2022-01-31 14:18:25,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 14:18:25,249 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 14:18:25,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 14:18:25,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 14:18:25,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 14:18:25,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ff9c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25, skipping insertion in model container [2022-01-31 14:18:25,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 14:18:25,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 14:18:25,378 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/egcd-ll_unwindbound10.c[489,502] [2022-01-31 14:18:25,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 14:18:25,412 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 14:18:25,420 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/egcd-ll_unwindbound10.c[489,502] [2022-01-31 14:18:25,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 14:18:25,434 INFO L208 MainTranslator]: Completed translation [2022-01-31 14:18:25,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25 WrapperNode [2022-01-31 14:18:25,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 14:18:25,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 14:18:25,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 14:18:25,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 14:18:25,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 14:18:25,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 14:18:25,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 14:18:25,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 14:18:25,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 14:18:25,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:25,492 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) [2022-01-31 14:18:25,494 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 [2022-01-31 14:18:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 14:18:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 14:18:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 14:18:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 14:18:25,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 14:18:25,529 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 14:18:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 14:18:25,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 14:18:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 14:18:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 14:18:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 14:18:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 14:18:25,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 14:18:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 14:18:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 14:18:25,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 14:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 14:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 14:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 14:18:25,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 14:18:25,578 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 14:18:25,579 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 14:18:25,659 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 14:18:25,662 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 14:18:25,662 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 14:18:25,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:18:25 BoogieIcfgContainer [2022-01-31 14:18:25,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 14:18:25,664 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 14:18:25,664 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 14:18:25,665 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 14:18:25,667 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:18:25" (1/1) ... [2022-01-31 14:18:25,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:18:25 BasicIcfg [2022-01-31 14:18:25,679 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 14:18:25,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 14:18:25,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 14:18:25,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 14:18:25,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 02:18:25" (1/4) ... [2022-01-31 14:18:25,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541435cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:18:25, skipping insertion in model container [2022-01-31 14:18:25,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 02:18:25" (2/4) ... [2022-01-31 14:18:25,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541435cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 02:18:25, skipping insertion in model container [2022-01-31 14:18:25,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 02:18:25" (3/4) ... [2022-01-31 14:18:25,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541435cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:18:25, skipping insertion in model container [2022-01-31 14:18:25,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 02:18:25" (4/4) ... [2022-01-31 14:18:25,683 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound10.cJordan [2022-01-31 14:18:25,686 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 14:18:25,686 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 14:18:25,711 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 14:18:25,716 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 14:18:25,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 14:18:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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) [2022-01-31 14:18:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-31 14:18:25,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:25,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:25,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2051628946, now seen corresponding path program 1 times [2022-01-31 14:18:25,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:25,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465645970] [2022-01-31 14:18:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:25,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 14:18:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 14:18:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 14:18:25,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 14:18:25,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:25,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465645970] [2022-01-31 14:18:25,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465645970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:18:25,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:18:25,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 14:18:25,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247347183] [2022-01-31 14:18:25,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:18:25,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 14:18:25,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:25,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 14:18:25,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 14:18:25,950 INFO L87 Difference]: Start difference. First operand has 35 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 14:18:26,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:26,049 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-01-31 14:18:26,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 14:18:26,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2022-01-31 14:18:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:26,066 INFO L225 Difference]: With dead ends: 36 [2022-01-31 14:18:26,067 INFO L226 Difference]: Without dead ends: 31 [2022-01-31 14:18:26,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 14:18:26,076 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:26,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:18:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-01-31 14:18:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-01-31 14:18:26,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2022-01-31 14:18:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-01-31 14:18:26,119 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 22 [2022-01-31 14:18:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:26,121 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-01-31 14:18:26,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 14:18:26,122 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-01-31 14:18:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 14:18:26,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:26,124 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:26,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 14:18:26,124 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:26,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash -794581502, now seen corresponding path program 1 times [2022-01-31 14:18:26,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:26,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774643564] [2022-01-31 14:18:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:26,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 14:18:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 14:18:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-01-31 14:18:26,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 14:18:26,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:26,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774643564] [2022-01-31 14:18:26,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774643564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:18:26,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:18:26,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 14:18:26,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615370355] [2022-01-31 14:18:26,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:18:26,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 14:18:26,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:26,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 14:18:26,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 14:18:26,277 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 14:18:26,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:26,383 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2022-01-31 14:18:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 14:18:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-01-31 14:18:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:26,385 INFO L225 Difference]: With dead ends: 32 [2022-01-31 14:18:26,386 INFO L226 Difference]: Without dead ends: 32 [2022-01-31 14:18:26,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 14:18:26,392 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:26,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 65 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:18:26,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-31 14:18:26,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-01-31 14:18:26,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-01-31 14:18:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-01-31 14:18:26,401 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 23 [2022-01-31 14:18:26,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:26,402 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-01-31 14:18:26,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-01-31 14:18:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-01-31 14:18:26,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-31 14:18:26,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:26,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:26,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 14:18:26,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:26,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash -793509026, now seen corresponding path program 1 times [2022-01-31 14:18:26,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:26,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385152284] [2022-01-31 14:18:26,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:26,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:26,413 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:26,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1377573728] [2022-01-31 14:18:26,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:26,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:26,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:26,431 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) [2022-01-31 14:18:26,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 14:18:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:26,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-31 14:18:26,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:26,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-31 14:18:26,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 14:18:26,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:26,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385152284] [2022-01-31 14:18:26,623 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:26,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377573728] [2022-01-31 14:18:26,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377573728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:18:26,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:18:26,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 14:18:26,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074055046] [2022-01-31 14:18:26,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:18:26,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 14:18:26,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:26,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 14:18:26,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 14:18:26,624 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 14:18:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:26,659 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2022-01-31 14:18:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 14:18:26,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-01-31 14:18:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:26,660 INFO L225 Difference]: With dead ends: 47 [2022-01-31 14:18:26,660 INFO L226 Difference]: Without dead ends: 47 [2022-01-31 14:18:26,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 14:18:26,661 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:26,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 155 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:18:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-31 14:18:26,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-01-31 14:18:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 26 states have internal predecessors, (31), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 14:18:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2022-01-31 14:18:26,668 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 23 [2022-01-31 14:18:26,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:26,669 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2022-01-31 14:18:26,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-31 14:18:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2022-01-31 14:18:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-31 14:18:26,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:26,670 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:26,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 14:18:26,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:26,888 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:26,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:26,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2115229340, now seen corresponding path program 1 times [2022-01-31 14:18:26,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:26,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896051311] [2022-01-31 14:18:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:26,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:26,906 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:26,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541156324] [2022-01-31 14:18:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:26,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:26,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:26,914 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) [2022-01-31 14:18:26,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 14:18:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:26,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 14:18:26,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 14:18:27,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:18:27,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:27,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896051311] [2022-01-31 14:18:27,173 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:27,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541156324] [2022-01-31 14:18:27,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541156324] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 14:18:27,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 14:18:27,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-01-31 14:18:27,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555878972] [2022-01-31 14:18:27,174 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 14:18:27,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 14:18:27,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:27,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 14:18:27,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-31 14:18:27,175 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 14:18:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:27,291 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2022-01-31 14:18:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 14:18:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2022-01-31 14:18:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:27,293 INFO L225 Difference]: With dead ends: 51 [2022-01-31 14:18:27,293 INFO L226 Difference]: Without dead ends: 51 [2022-01-31 14:18:27,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-31 14:18:27,294 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 24 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:27,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 209 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:18:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-01-31 14:18:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-01-31 14:18:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 states have internal predecessors, (34), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-31 14:18:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2022-01-31 14:18:27,300 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 28 [2022-01-31 14:18:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:27,300 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2022-01-31 14:18:27,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 14:18:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2022-01-31 14:18:27,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-31 14:18:27,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:27,301 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:27,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 14:18:27,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-31 14:18:27,512 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:27,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash -864241798, now seen corresponding path program 1 times [2022-01-31 14:18:27,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:27,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956758331] [2022-01-31 14:18:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:27,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:27,520 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:27,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [936477178] [2022-01-31 14:18:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:27,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:27,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:27,534 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) [2022-01-31 14:18:27,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 14:18:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:27,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-31 14:18:27,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 14:18:27,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:18:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-31 14:18:27,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:27,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956758331] [2022-01-31 14:18:27,780 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:27,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936477178] [2022-01-31 14:18:27,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936477178] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 14:18:27,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 14:18:27,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-01-31 14:18:27,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088099239] [2022-01-31 14:18:27,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:18:27,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 14:18:27,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:27,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 14:18:27,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-01-31 14:18:27,782 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 14:18:27,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:27,813 INFO L93 Difference]: Finished difference Result 73 states and 105 transitions. [2022-01-31 14:18:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 14:18:27,813 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-01-31 14:18:27,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:27,815 INFO L225 Difference]: With dead ends: 73 [2022-01-31 14:18:27,815 INFO L226 Difference]: Without dead ends: 71 [2022-01-31 14:18:27,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-31 14:18:27,816 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 9 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:27,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 144 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:18:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-01-31 14:18:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-01-31 14:18:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 40 states have internal predecessors, (48), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-31 14:18:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2022-01-31 14:18:27,822 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 100 transitions. Word has length 33 [2022-01-31 14:18:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:27,823 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 100 transitions. [2022-01-31 14:18:27,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-31 14:18:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 100 transitions. [2022-01-31 14:18:27,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 14:18:27,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:27,833 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:27,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 14:18:28,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:28,049 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:28,050 INFO L85 PathProgramCache]: Analyzing trace with hash -120478471, now seen corresponding path program 1 times [2022-01-31 14:18:28,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:28,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999060006] [2022-01-31 14:18:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:28,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:28,063 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:28,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389793900] [2022-01-31 14:18:28,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:28,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:28,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:28,068 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) [2022-01-31 14:18:28,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 14:18:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:28,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-31 14:18:28,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 14:18:28,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 14:18:28,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:28,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999060006] [2022-01-31 14:18:28,178 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:28,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389793900] [2022-01-31 14:18:28,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389793900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:18:28,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:18:28,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 14:18:28,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238601879] [2022-01-31 14:18:28,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:18:28,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 14:18:28,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 14:18:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 14:18:28,180 INFO L87 Difference]: Start difference. First operand 71 states and 100 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 14:18:28,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:28,202 INFO L93 Difference]: Finished difference Result 85 states and 121 transitions. [2022-01-31 14:18:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 14:18:28,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2022-01-31 14:18:28,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:28,206 INFO L225 Difference]: With dead ends: 85 [2022-01-31 14:18:28,206 INFO L226 Difference]: Without dead ends: 85 [2022-01-31 14:18:28,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 14:18:28,214 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 5 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:28,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 153 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:18:28,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-31 14:18:28,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2022-01-31 14:18:28,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 46 states have internal predecessors, (51), 31 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-31 14:18:28,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2022-01-31 14:18:28,238 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 109 transitions. Word has length 39 [2022-01-31 14:18:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:28,238 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 109 transitions. [2022-01-31 14:18:28,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-01-31 14:18:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 109 transitions. [2022-01-31 14:18:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 14:18:28,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:28,239 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:28,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-31 14:18:28,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:28,440 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:28,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:28,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1628466672, now seen corresponding path program 1 times [2022-01-31 14:18:28,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:28,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151345356] [2022-01-31 14:18:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:28,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:28,447 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:28,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [760180393] [2022-01-31 14:18:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:28,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:28,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:28,449 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) [2022-01-31 14:18:28,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 14:18:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:28,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 14:18:28,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 14:18:28,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:18:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-31 14:18:28,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:28,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151345356] [2022-01-31 14:18:28,695 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:28,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760180393] [2022-01-31 14:18:28,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760180393] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 14:18:28,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 14:18:28,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-31 14:18:28,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431670540] [2022-01-31 14:18:28,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 14:18:28,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 14:18:28,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:28,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 14:18:28,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-01-31 14:18:28,697 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-01-31 14:18:28,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:28,782 INFO L93 Difference]: Finished difference Result 202 states and 256 transitions. [2022-01-31 14:18:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 14:18:28,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 42 [2022-01-31 14:18:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:28,784 INFO L225 Difference]: With dead ends: 202 [2022-01-31 14:18:28,784 INFO L226 Difference]: Without dead ends: 200 [2022-01-31 14:18:28,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-31 14:18:28,785 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 57 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:28,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 176 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:18:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-31 14:18:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 194. [2022-01-31 14:18:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 109 states have (on average 1.2201834862385321) internal successors, (133), 120 states have internal predecessors, (133), 63 states have call successors, (63), 23 states have call predecessors, (63), 21 states have return successors, (55), 50 states have call predecessors, (55), 55 states have call successors, (55) [2022-01-31 14:18:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 251 transitions. [2022-01-31 14:18:28,795 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 251 transitions. Word has length 42 [2022-01-31 14:18:28,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:28,796 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 251 transitions. [2022-01-31 14:18:28,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 6 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-01-31 14:18:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 251 transitions. [2022-01-31 14:18:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-31 14:18:28,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:28,796 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:28,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-31 14:18:29,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:29,024 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:29,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:29,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1627394196, now seen corresponding path program 1 times [2022-01-31 14:18:29,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:29,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020470010] [2022-01-31 14:18:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:29,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:29,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:29,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288794854] [2022-01-31 14:18:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:29,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:29,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:29,033 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) [2022-01-31 14:18:29,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 14:18:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:29,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-31 14:18:29,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 14:18:29,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 14:18:29,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:29,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020470010] [2022-01-31 14:18:29,199 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:29,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288794854] [2022-01-31 14:18:29,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288794854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 14:18:29,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 14:18:29,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 14:18:29,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372548006] [2022-01-31 14:18:29,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:18:29,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 14:18:29,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:29,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 14:18:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-31 14:18:29,200 INFO L87 Difference]: Start difference. First operand 194 states and 251 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 14:18:29,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:29,224 INFO L93 Difference]: Finished difference Result 206 states and 260 transitions. [2022-01-31 14:18:29,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 14:18:29,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2022-01-31 14:18:29,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:29,226 INFO L225 Difference]: With dead ends: 206 [2022-01-31 14:18:29,226 INFO L226 Difference]: Without dead ends: 203 [2022-01-31 14:18:29,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-31 14:18:29,227 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:29,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:18:29,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-01-31 14:18:29,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-01-31 14:18:29,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 129 states have internal predecessors, (142), 60 states have call successors, (60), 26 states have call predecessors, (60), 24 states have return successors, (52), 47 states have call predecessors, (52), 52 states have call successors, (52) [2022-01-31 14:18:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 254 transitions. [2022-01-31 14:18:29,242 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 254 transitions. Word has length 42 [2022-01-31 14:18:29,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:29,242 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 254 transitions. [2022-01-31 14:18:29,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 14:18:29,242 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 254 transitions. [2022-01-31 14:18:29,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-31 14:18:29,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:29,243 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1] [2022-01-31 14:18:29,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 14:18:29,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:29,460 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:29,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1527150038, now seen corresponding path program 1 times [2022-01-31 14:18:29,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:29,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637145285] [2022-01-31 14:18:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:29,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:29,466 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:29,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829120299] [2022-01-31 14:18:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:29,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:29,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:29,499 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) [2022-01-31 14:18:29,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 14:18:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:29,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 14:18:29,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 14:18:29,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:18:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-31 14:18:29,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:29,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637145285] [2022-01-31 14:18:29,715 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:29,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829120299] [2022-01-31 14:18:29,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829120299] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 14:18:29,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 14:18:29,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-01-31 14:18:29,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392209653] [2022-01-31 14:18:29,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 14:18:29,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 14:18:29,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:29,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 14:18:29,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-31 14:18:29,716 INFO L87 Difference]: Start difference. First operand 203 states and 254 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 14:18:29,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:29,808 INFO L93 Difference]: Finished difference Result 230 states and 285 transitions. [2022-01-31 14:18:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 14:18:29,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2022-01-31 14:18:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:29,810 INFO L225 Difference]: With dead ends: 230 [2022-01-31 14:18:29,810 INFO L226 Difference]: Without dead ends: 216 [2022-01-31 14:18:29,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-01-31 14:18:29,811 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 20 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:29,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 147 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:18:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-01-31 14:18:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 214. [2022-01-31 14:18:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 128 states have (on average 1.1640625) internal successors, (149), 139 states have internal predecessors, (149), 59 states have call successors, (59), 27 states have call predecessors, (59), 26 states have return successors, (54), 47 states have call predecessors, (54), 54 states have call successors, (54) [2022-01-31 14:18:29,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 262 transitions. [2022-01-31 14:18:29,819 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 262 transitions. Word has length 44 [2022-01-31 14:18:29,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:29,819 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 262 transitions. [2022-01-31 14:18:29,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-31 14:18:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 262 transitions. [2022-01-31 14:18:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 14:18:29,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:29,820 INFO L514 BasicCegarLoop]: trace histogram [5, 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] [2022-01-31 14:18:29,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 14:18:30,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:30,036 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:30,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1237367986, now seen corresponding path program 2 times [2022-01-31 14:18:30,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:30,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042641130] [2022-01-31 14:18:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:30,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:30,043 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:30,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1671526729] [2022-01-31 14:18:30,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 14:18:30,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:30,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:30,074 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) [2022-01-31 14:18:30,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 14:18:30,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 14:18:30,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 14:18:30,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-31 14:18:30,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 14:18:30,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:18:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-01-31 14:18:30,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:30,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042641130] [2022-01-31 14:18:30,361 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:30,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671526729] [2022-01-31 14:18:30,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671526729] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 14:18:30,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 14:18:30,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-01-31 14:18:30,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088915407] [2022-01-31 14:18:30,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 14:18:30,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 14:18:30,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:30,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 14:18:30,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 14:18:30,363 INFO L87 Difference]: Start difference. First operand 214 states and 262 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-31 14:18:30,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:30,699 INFO L93 Difference]: Finished difference Result 251 states and 310 transitions. [2022-01-31 14:18:30,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 14:18:30,701 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 47 [2022-01-31 14:18:30,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:30,702 INFO L225 Difference]: With dead ends: 251 [2022-01-31 14:18:30,702 INFO L226 Difference]: Without dead ends: 229 [2022-01-31 14:18:30,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-31 14:18:30,702 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 14 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:30,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 238 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 14:18:30,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-31 14:18:30,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 210. [2022-01-31 14:18:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 134 states have (on average 1.126865671641791) internal successors, (151), 142 states have internal predecessors, (151), 47 states have call successors, (47), 29 states have call predecessors, (47), 28 states have return successors, (42), 38 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-31 14:18:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 240 transitions. [2022-01-31 14:18:30,709 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 240 transitions. Word has length 47 [2022-01-31 14:18:30,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:30,709 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 240 transitions. [2022-01-31 14:18:30,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-31 14:18:30,709 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 240 transitions. [2022-01-31 14:18:30,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-31 14:18:30,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:30,710 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:30,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 14:18:30,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 14:18:30,928 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:30,928 INFO L85 PathProgramCache]: Analyzing trace with hash -264996897, now seen corresponding path program 1 times [2022-01-31 14:18:30,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:30,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260173277] [2022-01-31 14:18:30,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:30,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:30,935 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:30,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541241011] [2022-01-31 14:18:30,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:30,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:30,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:30,937 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) [2022-01-31 14:18:30,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 14:18:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 14:18:30,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-31 14:18:30,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:31,183 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-31 14:18:31,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:18:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-01-31 14:18:31,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:31,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260173277] [2022-01-31 14:18:31,296 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:31,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541241011] [2022-01-31 14:18:31,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541241011] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-31 14:18:31,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-31 14:18:31,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-01-31 14:18:31,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680913155] [2022-01-31 14:18:31,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 14:18:31,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 14:18:31,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:31,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 14:18:31,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-31 14:18:31,298 INFO L87 Difference]: Start difference. First operand 210 states and 240 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 14:18:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:31,321 INFO L93 Difference]: Finished difference Result 214 states and 242 transitions. [2022-01-31 14:18:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 14:18:31,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2022-01-31 14:18:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:31,323 INFO L225 Difference]: With dead ends: 214 [2022-01-31 14:18:31,323 INFO L226 Difference]: Without dead ends: 192 [2022-01-31 14:18:31,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-01-31 14:18:31,323 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:31,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 14:18:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-01-31 14:18:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2022-01-31 14:18:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 125 states have (on average 1.112) internal successors, (139), 129 states have internal predecessors, (139), 38 states have call successors, (38), 26 states have call predecessors, (38), 25 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2022-01-31 14:18:31,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 212 transitions. [2022-01-31 14:18:31,328 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 212 transitions. Word has length 61 [2022-01-31 14:18:31,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:31,329 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 212 transitions. [2022-01-31 14:18:31,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-01-31 14:18:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 212 transitions. [2022-01-31 14:18:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-31 14:18:31,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:31,330 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:31,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-31 14:18:31,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:31,545 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:31,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1503864962, now seen corresponding path program 2 times [2022-01-31 14:18:31,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:31,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047953377] [2022-01-31 14:18:31,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:31,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:31,553 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:31,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581699737] [2022-01-31 14:18:31,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 14:18:31,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:31,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:31,568 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) [2022-01-31 14:18:31,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 14:18:31,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 14:18:31,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 14:18:31,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-31 14:18:31,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 14:18:31,790 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 266 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-01-31 14:18:31,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 14:18:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 50 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-01-31 14:18:31,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 14:18:31,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047953377] [2022-01-31 14:18:31,956 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 14:18:31,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581699737] [2022-01-31 14:18:31,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581699737] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 14:18:31,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 14:18:31,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-01-31 14:18:31,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585550851] [2022-01-31 14:18:31,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 14:18:31,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 14:18:31,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 14:18:31,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 14:18:31,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-01-31 14:18:31,957 INFO L87 Difference]: Start difference. First operand 189 states and 212 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) [2022-01-31 14:18:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 14:18:32,148 INFO L93 Difference]: Finished difference Result 507 states and 572 transitions. [2022-01-31 14:18:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-31 14:18:32,149 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) Word has length 99 [2022-01-31 14:18:32,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 14:18:32,151 INFO L225 Difference]: With dead ends: 507 [2022-01-31 14:18:32,151 INFO L226 Difference]: Without dead ends: 507 [2022-01-31 14:18:32,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-01-31 14:18:32,152 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 94 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 14:18:32,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 230 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 14:18:32,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-01-31 14:18:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2022-01-31 14:18:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 335 states have (on average 1.0955223880597016) internal successors, (367), 345 states have internal predecessors, (367), 104 states have call successors, (104), 68 states have call predecessors, (104), 67 states have return successors, (101), 93 states have call predecessors, (101), 101 states have call successors, (101) [2022-01-31 14:18:32,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 572 transitions. [2022-01-31 14:18:32,164 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 572 transitions. Word has length 99 [2022-01-31 14:18:32,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 14:18:32,164 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 572 transitions. [2022-01-31 14:18:32,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 12 states have call successors, (32), 8 states have call predecessors, (32), 7 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) [2022-01-31 14:18:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 572 transitions. [2022-01-31 14:18:32,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-31 14:18:32,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 14:18:32,167 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:32,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-01-31 14:18:32,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-31 14:18:32,385 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 14:18:32,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 14:18:32,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1084056642, now seen corresponding path program 3 times [2022-01-31 14:18:32,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 14:18:32,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786094901] [2022-01-31 14:18:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 14:18:32,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 14:18:32,394 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 14:18:32,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671922662] [2022-01-31 14:18:32,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 14:18:32,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 14:18:32,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 14:18:32,412 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) [2022-01-31 14:18:32,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 14:18:32,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2022-01-31 14:18:32,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-01-31 14:18:32,595 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 14:18:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 14:18:32,777 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 14:18:32,777 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 14:18:32,778 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 14:18:32,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-31 14:18:32,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 14:18:32,999 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 14:18:33,022 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 14:18:33,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 02:18:33 BasicIcfg [2022-01-31 14:18:33,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 14:18:33,074 INFO L158 Benchmark]: Toolchain (without parser) took 7825.84ms. Allocated memory was 178.3MB in the beginning and 250.6MB in the end (delta: 72.4MB). Free memory was 129.3MB in the beginning and 109.9MB in the end (delta: 19.4MB). Peak memory consumption was 92.6MB. Max. memory is 8.0GB. [2022-01-31 14:18:33,075 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 14:18:33,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.85ms. Allocated memory was 178.3MB in the beginning and 250.6MB in the end (delta: 72.4MB). Free memory was 129.0MB in the beginning and 228.4MB in the end (delta: -99.4MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-01-31 14:18:33,075 INFO L158 Benchmark]: Boogie Preprocessor took 21.68ms. Allocated memory is still 250.6MB. Free memory was 228.4MB in the beginning and 226.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 14:18:33,075 INFO L158 Benchmark]: RCFGBuilder took 205.59ms. Allocated memory is still 250.6MB. Free memory was 226.8MB in the beginning and 216.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-31 14:18:33,075 INFO L158 Benchmark]: IcfgTransformer took 14.93ms. Allocated memory is still 250.6MB. Free memory was 216.3MB in the beginning and 214.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 14:18:33,075 INFO L158 Benchmark]: TraceAbstraction took 7394.10ms. Allocated memory is still 250.6MB. Free memory was 214.8MB in the beginning and 109.9MB in the end (delta: 104.9MB). Peak memory consumption was 105.9MB. Max. memory is 8.0GB. [2022-01-31 14:18:33,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 178.3MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.85ms. Allocated memory was 178.3MB in the beginning and 250.6MB in the end (delta: 72.4MB). Free memory was 129.0MB in the beginning and 228.4MB in the end (delta: -99.4MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.68ms. Allocated memory is still 250.6MB. Free memory was 228.4MB in the beginning and 226.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 205.59ms. Allocated memory is still 250.6MB. Free memory was 226.8MB in the beginning and 216.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 14.93ms. Allocated memory is still 250.6MB. Free memory was 216.3MB in the beginning and 214.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 7394.10ms. Allocated memory is still 250.6MB. Free memory was 214.8MB in the beginning and 109.9MB in the end (delta: 104.9MB). Peak memory consumption was 105.9MB. 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 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [\old(counter)=13, counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [\old(counter)=0, counter=0, x=12, y=1] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=12, y=1] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [\old(counter)=0, a=12, b=1, counter=0, p=1, q=0, r=0, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=12, b=1, counter=1, counter++=0, p=1, q=0, r=0, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=12, b=1, counter=1, p=1, q=0, r=0, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=11, b=1, counter=1, p=1, q=0, r=-1, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=11, b=1, counter=2, counter++=1, p=1, q=0, r=-1, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=11, b=1, counter=2, p=1, q=0, r=-1, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=10, b=1, counter=2, p=1, q=0, r=-2, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=10, b=1, counter=3, counter++=2, p=1, q=0, r=-2, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=10, b=1, counter=3, p=1, q=0, r=-2, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=9, b=1, counter=3, p=1, q=0, r=-3, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=9, b=1, counter=4, counter++=3, p=1, q=0, r=-3, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=9, b=1, counter=4, p=1, q=0, r=-3, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=8, b=1, counter=4, p=1, q=0, r=-4, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=8, b=1, counter=5, counter++=4, p=1, q=0, r=-4, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=8, b=1, counter=5, p=1, q=0, r=-4, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=7, b=1, counter=5, p=1, q=0, r=-5, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=7, b=1, counter=6, counter++=5, p=1, q=0, r=-5, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=7, b=1, counter=6, p=1, q=0, r=-5, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=6, b=1, counter=6, p=1, q=0, r=-6, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=6, b=1, counter=7, counter++=6, p=1, q=0, r=-6, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=6, b=1, counter=7, p=1, q=0, r=-6, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=5, b=1, counter=7, p=1, q=0, r=-7, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=5, b=1, counter=8, counter++=7, p=1, q=0, r=-7, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=5, b=1, counter=8, p=1, q=0, r=-7, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=4, b=1, counter=8, p=1, q=0, r=-8, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=4, b=1, counter=9, counter++=8, p=1, q=0, r=-8, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=4, b=1, counter=9, p=1, q=0, r=-8, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=3, b=1, counter=9, p=1, q=0, r=-9, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=3, b=1, counter=10, counter++=9, p=1, q=0, r=-9, s=1, x=12, y=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [\old(counter)=0, a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [\old(counter)=0, a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [\old(counter)=0, a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L39] COND FALSE !(!(a != b)) VAL [\old(counter)=0, a=3, b=1, counter=10, p=1, q=0, r=-9, s=1, x=12, y=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [\old(counter)=0, a=2, b=1, counter=10, p=1, q=0, r=-10, s=1, x=12, y=1] [L34] EXPR counter++ VAL [\old(counter)=0, a=2, b=1, counter=11, counter++=10, p=1, q=0, r=-10, s=1, x=12, y=1] [L34] COND FALSE !(counter++<10) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L11] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L13] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 13, TraceHistogramMax: 31, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 301 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 268 mSDsluCounter, 1816 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1313 mSDsCounter, 160 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 722 IncrementalHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 160 mSolverCounterUnsat, 503 mSDtfsCounter, 722 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 824 GetRequests, 726 SyntacticMatches, 8 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=507occurred in iteration=12, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 40 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 716 NumberOfCodeBlocks, 716 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 811 ConstructedInterpolants, 0 QuantifiedInterpolants, 2393 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1453 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 790/1151 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 RESULT: Ultimate proved your program to be incorrect! [2022-01-31 14:18:33,108 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...